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WO2012114576A1 - Machine de super-finissage utilisée pour bagues intérieure et extérieure - Google Patents

Machine de super-finissage utilisée pour bagues intérieure et extérieure Download PDF

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Publication number
WO2012114576A1
WO2012114576A1 PCT/JP2011/073727 JP2011073727W WO2012114576A1 WO 2012114576 A1 WO2012114576 A1 WO 2012114576A1 JP 2011073727 W JP2011073727 W JP 2011073727W WO 2012114576 A1 WO2012114576 A1 WO 2012114576A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner ring
raceway surface
outer ring
ring
grindstone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/073727
Other languages
English (en)
Japanese (ja)
Inventor
健剛 水浦
宗太郎 山下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011038156A external-priority patent/JP5626003B2/ja
Priority claimed from JP2011038155A external-priority patent/JP5640809B2/ja
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to CN201180002688.1A priority Critical patent/CN102781625B/zh
Publication of WO2012114576A1 publication Critical patent/WO2012114576A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B35/00—Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B24B19/06—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements for grinding races, e.g. roller races

Definitions

  • the present invention enables a superfinishing process for the inner ring and the outer ring to be automatically performed with a single (one) facility, so that a set (specification) for the superfinishing process for the inner ring and a superfinishing process for the outer ring are performed.
  • the present invention relates to a super finishing board for both inner and outer rings that can be switched automatically (ie, alternate machining of inner and outer rings) with a set (specification) for the purpose.
  • each of the inner ring and outer ring raceway surfaces is provided for the purpose of improving wear resistance and corrosion resistance and improving rotational accuracy and acoustic performance.
  • the outer ring raceway surface is smoothed (that is, flat and smooth) (see, for example, Patent Document 1).
  • the equipment for superfinishing is built separately for the inner ring raceway surface and the outer ring raceway surface independently, and what are the superfinishing process for the inner ring raceway surface and the superfinishing process for the outer ring raceway surface? It is done separately in each dedicated facility.
  • the present invention has been made to solve such a problem, and the object of the present invention is to automatically perform superfinishing processing on the inner ring and the outer ring with a single (one unit) facility, thereby enabling the inner ring and the outer ring to be automatically processed.
  • Super-finishing for inner and outer rings that enables full-automatic switching between the set (specification) for super-finishing and the set (specification) for super-finishing for the outer ring (ie, alternate machining of inner and outer rings) To provide a finishing board.
  • one aspect of the present invention is an inner / outer ring super-finishing machine that automatically performs super-finishing processing on an inner ring and an outer ring with a single facility, and is centered on a rotating shaft.
  • a bearing ring holding mechanism that rotatably holds the bearing ring, and a raceway surface machining mechanism that superfinishes the raceway surface of the bearing ring that is rotatably held.
  • the plurality of bearing ring mounting structures that are concentrically arranged at predetermined intervals along the circumferential direction and that can mount the bearing ring, and the plurality of the ring according to the type of the bearing ring to be processed
  • a structure moving means that enables the structure for mounting the bearing ring to be radially approached toward the rotation axis at the same time and to be radially separated from the rotation axis, and the raceway surface machining mechanism includes an inner ring raceway surface.
  • each of the plurality of bearing ring mounting structures is provided with mounting surfaces on which the bearing rings can be mounted on the same plane perpendicular to each other, and
  • the bearing ring holding mechanism is provided with a pressure contact structure that presses the bearing ring against each mounting surface, and the bearing ring is pressed against each mounting surface by the pressure welding structure, so that the bearing ring is the structure for mounting the bearing ring.
  • You may comprise so that it can rotate integrally with a body.
  • a pair of positioning mechanisms are provided on both sides of the bearing ring holding mechanism so as to face each other along the direction orthogonal to the rotation axis and adjust the positions of the bearing rings mounted on the plurality of bearing ring mounting structures.
  • Each of the pair of positioning mechanisms includes a shoe that is also used as a configuration for supporting the outer diameter surface of the raceway during superfinishing, a raceway positioning pusher that presses the raceway toward the shoe, and the shoe. And a positioning mechanism moving means that enables the positioning pusher to approach and move away from the raceway, and when the raceway to be processed is an inner ring, one shoe and a positioning pusher Is moved away from the inner ring, the other shoe and the positioning pusher are approached toward the inner ring, and the other positioning pusher applies the inner ring to the other shoe.
  • the raceway surface grindstone holder comprises an inner ring raceway surface grindstone holder that supports an inner ring raceway surface grindstone, and an outer ring raceway surface grindstone holder that supports an outer ring raceway surface grindstone, and the grindstone pressing means includes a cylinder, A piston main body provided in the cylinder; and two piston rods extending from both sides of the piston main body to the outside of the cylinder.
  • One of the two piston rods is connected to the inner ring raceway surface grindstone holder,
  • An outer ring raceway surface grindstone holder may be coupled to the outer ring raceway surface.
  • the inner / outer ring superfinishing board supports a collar part machining head that supports a collar part grindstone, and supports the collar part machining head in a reversible manner, and the collar part grindstone around a reversal axis thereof at a desired angle.
  • a reversing mechanism for reversing, and an operating device for supporting the reversing mechanism and rotating the collar part processing head in a desired direction together with the reversing mechanism and performing a slight reciprocating motion may be further provided.
  • the actuating device has a rotary shaft that can be rotated by a drive source, and converts the rotary motion of the rotary shaft into a reciprocating motion and transmits it to the reversing mechanism, whereby the collar portion grindstone of the collar portion machining head.
  • An oscillation mechanism that reciprocally moves the collar, and a pivot mechanism that is concentric with the rotation shaft and pivots the flange grinding wheel of the collar processing head to a desired angle by pivoting the reversing mechanism. May be.
  • the oscillation mechanism includes an eccentric shaft portion provided on a rotation shaft, and an oscillation portion attached to the eccentric shaft portion so as to be rotatable relative to the eccentric shaft portion and supporting the reversing mechanism.
  • the turning mechanism is concentrically rotatable with the rotation shaft of the oscillation mechanism, and is connected to the angle adjustment gear shaft portion configured as a separate shaft from the rotation shaft, and the angle adjustment gear shaft portion, An angle adjustment table that rotates the oscillation part to a desired angle, and when the angle adjustment gear shaft part is rotated, the rotational movement is transmitted from the angle adjustment table to the oscillation part, and the angle It is good also as a structure which turns the said collar part processing head to a desired angle with the said inversion mechanism by rotating the said oscillation part with an adjustment table.
  • the super finishing for the inner ring and the outer ring can be automatically performed with a single (one) facility, so that the set (specification) for super finishing for the inner ring and the super finishing for the outer ring can be performed. It is possible to realize an inner / outer ring super-finishing panel that can be switched automatically (ie, alternate processing of inner and outer rings) with a set (specification) for finishing.
  • FIG. 1 is a plan view schematically showing an overall configuration of an inner / outer ring super finishing board according to an embodiment of the present invention, wherein (a) is a diagram showing a set state of super finishing for an inner ring, and (b) is The figure which shows the set state of the super-finishing process with respect to an outer ring
  • (a) is a partially enlarged perspective view showing a state in which superfinishing is being performed on the (single row) raceway surface of the conical inner ring
  • (b) is a diagram showing a state where the (single row) raceway surface of the cone outer ring is superposed.
  • (a) is a partial cross-sectional view showing a configuration of a pressure head for both inner and outer rings provided with an inner ring raceway surface grindstone and an outer ring raceway surface grindstone
  • (b) is a diagram showing a conical inner ring (single row) with an inner ring raceway surface grindstone.
  • (c) is the figure which shows the state where superfinishing is done to the (single row) raceway surface of the conical outer ring with the grindstone for outer ring raceway surface .
  • (a) is a figure which shows the state in which superfinishing is performed on the (single row, double row) raceway surface of the cylindrical inner ring by the inner ring raceway surface grinding wheel, and (b) is the cylindrical inner ring by the inner ring raceway surface grinding wheel.
  • the figure which shows a state (d) is a figure which shows the state in which superfinishing is performed to the (single row) raceway surface of a cylindrical outer ring with the outer ring raceway surface grindstone, (e) is the outer ring raceway surface grindstone
  • (a) is a partially enlarged view showing a state in which the inner ring collar is being superfinished by the collar superfinishing processing unit, and (b) is a superfinishing process on the inner ring raceway surface and the inner ring collar simultaneously.
  • (a) is a plan view showing a structure for mounting a brim superfinishing processing unit,
  • (b) is a cross-sectional view taken along the line bb of FIG. (a), and
  • (c) is a diagram (b) of FIG. Sectional drawing which follows the cc line
  • (a) is a diagram showing a state in which superfinishing is performed on the middle collar portion of the (double row) conical inner ring
  • (b) is a diagram showing one side collar portion of the (single row, double row) cylindrical inner race. The figure which shows the state in which finishing is performed
  • (c) is the figure which shows the state in which superfinishing is performed to the other side collar part of the (single row, double row) cylindrical inner ring
  • the super finishing process for the inner ring and the outer ring can be automatically performed by a single (one unit) equipment, so that the set (specification for super finishing process for the inner ring can be performed. ) And a set (specification) for super-finishing processing for the outer ring (ie, alternate processing of the inner and outer rings) is realized in a fully automatic manner.
  • a set (specification) for super finishing for the inner ring is referred to as “inner ring set”
  • a set (specification) for the super finishing for the outer ring is referred to as “outer ring set”.
  • FIGS. 1 (a) and 1 (b) the superfinishing board for both inner and outer rings according to an embodiment of the present invention is shown in FIGS. 1 (a) and 1 (b).
  • the inner ring raceway surface 2s and the outer ring raceway surface 4s) are smoothed as much as possible (for example, the ground raceway surface is further flattened and smoothed).
  • FIG. 1 As an example, a flanged inner ring 2 and a flangeless outer ring 4 for single-row tapered roller bearings are applied, and the inner ring raceway surface 2s, the outer ring raceway surface 4s, and the inner ring raceway surface 2s extend. A case is assumed in which superfinishing is performed on the collar portion (surface) 2t.
  • the inner / outer ring combined raceway surface finishing unit U1 can rotate the bearing rings (inner ring 2, outer ring 4) about the rotation axis Ax (for example, an arrow K).
  • the bearing ring holding mechanism 6 that is held in a rotating manner) and the raceway surfaces (the inner ring raceway surface 2s and the outer ring raceway surface 4s) of the bearing rings 2 and 4 that are rotatably held by the bearing ring holding mechanism 6 are superfinished.
  • a raceway surface machining mechanism 8 (see FIG. 3). 1A shows only the inner ring raceway surface grindstone 8a supported by the raceway surface machining mechanism 8
  • FIG. 1B shows the outer ring raceway surface supported by the raceway surface machining mechanism 8. Only the grindstone 8b is shown.
  • the bearing ring holding mechanisms 6 are arranged concentrically with the rotation axis Ax along the circumferential direction at predetermined intervals (for example, at equal intervals), and A plurality of bearing ring mounting structures 10 (also referred to as nosepieces) on which the bearing rings (inner ring 2, outer ring 4) can be mounted, and a plurality of bearing ring mounting structures according to the type of the bearing ring to be processed.
  • (Nosepiece) 10 is provided with structure moving means that allows the nosepiece 10 to simultaneously approach the rotation axis Ax in the radial direction (arrow S direction) and to be separated from the rotation axis Ax in the radial direction (arrow S direction). ing.
  • the type of raceway refers to a concept classified by “model number” or “part number” assigned to the inner ring 2 and the outer ring 4, and by referring to such model number, part number, etc., for example, , Size of inner ring 2 and outer ring 4 (diameter, radius, inner diameter, outer diameter, width, thickness, etc.) and form of raceway surface of inner ring 2 and outer ring 4 (single row, double row, inclination angle, width, surface) Shape), or the presence or absence of a collar portion (surface) 2t can be specified.
  • the model number, product number, etc. can be used as input data for positioning control (stop position control) by a servo motor, which will be described later.
  • each bearing ring mounting structure (nosepiece) 10 are, for example, the purpose and environment of use of the super finishing panel for both inner and outer rings, or the structure for mounting the bearing ring (nosepiece). ) Since it is set according to the size, weight, etc. of the bearing rings (inner ring 2, outer ring 4) mounted on 10, there is no particular limitation here.
  • the bearing ring mounting structure (nosepiece) 10 and the structure moving means described above are constructed on a turntable 12 constituting one structure of the bearing ring holding mechanism 6, and the turntable 12 is controlled by a control (not shown).
  • a control not shown
  • the belt can be rotated in the direction of the arrow K, for example, about the rotation axis Ax.
  • the rotation start timing, rotation speed, and rotation direction of the turntable 12 are managed by a control system, and thereby, for example, a bearing ring (inner ring 2, outer ring) by a positioning mechanism and a pressure contact structure 26 (see FIG. 3A) described later. After 4) is positioned and pressed against the mounting surface 10s, the turntable 12 can be automatically rotated at a predetermined timing.
  • the structure moving means can be realized by a combination of a ball screw and a servo motor.
  • a plurality of ball screws between the screw shaft 14 and the nut 16
  • a rotation mechanism that rotates each screw shaft 14 simultaneously and in the same direction
  • a servo motor (not shown) that rotates the rotation mechanism.
  • the servo motor includes, for example, an AC servo motor and a DC servo motor.
  • an AC servo motor is applied as an example.
  • each ball screw accommodating portion 18 is formed with a key groove 18g perforated along the radial direction S (that is, the moving direction S of each bearing ring mounting structure (nosepiece) 10) on the upper surface thereof.
  • Each bearing ring mounting structure (nosepiece) 10 and each nut 16 are coupled (coupled) to each other by a bolt 20 passed through the keyway 18g.
  • the rotation mechanism includes a single main bevel gear 22 that is provided coaxially with the rotation axis Ax, and a plurality of one provided at the distal end portion of each screw shaft 14 near the rotation axis Ax. It has a sub bevel gear 24, and both bevel gears 22, 24 mesh with each other at right angles.
  • the main bevel gear 22 is rotationally controlled by an AC servomotor (not shown).
  • the rotational force of the AC servomotor is transmitted from the main bevel gear 22 to each screw shaft 14 via each sub-bevel gear 24, and when each screw shaft 14 rotates simultaneously, each nut 16 thereby causes each screw 16 to rotate.
  • a plurality of bearing ring mounting structures (nosepieces) 10 can be moved simultaneously and in the same direction along the arrow S direction.
  • the AC servo motor is operated (rotated) in a direction to reduce the difference from the target position (coordinate). Then, this procedure is repeated until the target value is finally reached or the allowable range is entered, whereby stop position control of the plurality of track ring mounting structures (nosepieces) 10 is performed.
  • Another method is to record the current position information of the AC servomotor digitally, give a difference to the target position (coordinate) signal, and reach the target value at once.
  • a plurality of bearing ring mounting structures (nosepieces) 10 are provided.
  • the stop positions are limited to two locations: a first position (coordinates) that holds the inner ring 2 and a second position (coordinates) that holds the outer ring 4.
  • a plurality of structures for mounting a bearing ring (nosepiece) 10 can be automatically switched between the first position (coordinates) “inner ring set” and the second position (coordinates) “outer ring set”.
  • this is referred to as “nosepiece inner / outer ring set switching”.
  • the above-described bearing ring holding mechanism 6 includes the bearing rings (inner ring 2 and outer ring 4) and mounting surfaces 10s of the plurality of bearing ring mounting structures (nosepieces) 10 described above.
  • a pressure contact structure 26 is provided for pressure contact (see FIG. 2).
  • the race rings (inner ring 2 and outer ring 4) are pressed against each bearing ring mounting structure (nosepiece) 10 so as to be pressed against each mounting surface 10s.
  • a suction method in which the bearing rings (inner ring 2, outer ring 4) are attracted (sucked) toward each bearing ring mounting structure (nosepiece) 10 and pressed against each mounting surface 10 s. Can be applied.
  • FIG. 3A shows a state where a plurality of bearing ring mounting structures (nosepieces) 10 are set at positions where the inner ring 2 is held.
  • a pressing method is applied as an example of the press contact structure 26, and the press contact structure 26 (also referred to as a pressure roll mechanism) according to the press method is a hollow annular end surface 2a of the inner ring 2 (press contact with each mounting surface 10s).
  • a pair of rolls 26r capable of applying a pressing force vertically downward with respect to the opposite end face of the inner ring raceway surface 2s (hereinafter referred to as the inner ring end face 2a). Yes.
  • the pair of rolls 26r are opposed to each other so as to be rotatable about a single virtual rotation axis (not shown), and are arranged in parallel to each other, of the inner ring end face 2a forming a hollow annular shape,
  • the inner ring 2 is set at both diametrical both sides passing through the central axis of the inner ring 2.
  • the inner ring 2 is in an “inner ring set” state held by a plurality of track ring mounting structures (nosepieces) 10.
  • the inner ring 2 is pressed toward the inner ring shoe 44 by “switching of inner and outer rings of the shoe and pusher” described later, and is set so as to be rotatable with reference to the inner ring shoe 44.
  • the pressure contact structure 26 includes a pair of roll holders 26h that support each roll 26r so that the roll 26r can rotate (for example, rotate free).
  • the pair of roll holders 26h extend in parallel with each other, and the rolls 26r are respectively supported at the tip portions thereof. Further, the base end portions of the pair of roll holders 26h are connected (supported) to a moving mechanism (not shown) for moving the roll holder 26h and setting the pair of rolls 26r on both side portions of the inner ring end surface 2a. ing.
  • the moving mechanism moves (relatively approaches) the pair of roll holders 26h in accordance with the diameter of the inner ring 2 in the “inner ring set” state (the inner diameter of the inner ring end surface 2a, the outer diameter, the average diameter of the inner and outer diameters, etc.). Or separated). Thereby, the distance (interval) between the pair of rolls 26r can be reduced or increased according to the diameter of the inner ring 2 (the inner diameter of the inner ring end surface 2a, the outer diameter, the average diameter of the inner and outer diameters, etc.). In addition, when moving a pair of roll holder 26h, it is preferable to move, maintaining a mutually parallel positional relationship.
  • Such a moving mechanism can be realized by a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • a ball screw a structure in which a ball rolls and rotates between a screw shaft and a nut
  • an AC servo motor Although not particularly illustrated, for example, the pair of roll holders 26h are individually connected to the screw shafts via nuts, and AC screw motors are connected to the screw shafts, and the rotations of the screw shafts are controlled by the AC servo motors. That's fine.
  • the orientation of the arrangement of each screw shaft is set to be parallel to one virtual rotation axis of the pair of rolls 26r described above.
  • the pair of roll holders 26h are moved, and the distance (interval) between the pair of rolls 26r is adjusted to the diameter of the inner ring 2 (the inner diameter of the inner ring end surface 2a, the outer diameter, the average diameter of the inner and outer diameters, etc.). be able to.
  • the moving mechanism is configured so that the width of the inner ring 2 in the “set for inner ring” state (the distance between the inner ring end faces, the other way of understanding, the mounting surface 10s of the bearing ring mounting structure (nosepiece) 10).
  • the pair of roll holders 26h can be moved (up and down in a vertical type superfinishing board for inner and outer rings). Thereby, a pair of roll 26r can be made to approach or separate with respect to the inner ring
  • Such a moving mechanism can be realized by a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • the base end portions of the pair of roll holders 26h may be connected to a screw shaft extending in the vertical direction via a nut and the rotation of the screw shaft may be controlled by an AC servo motor.
  • a pair of roll holder 26h can be moved up and down, a pair of roll 26r can be approached to the inner ring
  • the process until the pair of rolls 26r are set on both sides of the inner ring end face 2a is performed after adjusting the distance (interval) between the pair of rolls 26r in accordance with the diameter of the inner ring 2.
  • the roll 26r may be positioned at both side portions of the inner ring end surface 2a, and conversely, the pair of rolls 26r is positioned in the vicinity of both side portions of the inner ring end surface 2a (for example, near the inside of the both side portions). After positioning in the region or the region near the outside), the distance (interval) between the pair of rolls 26r may be adjusted in accordance with the diameter of the inner ring 2.
  • a pressing force is applied to the inner ring end surface 2a vertically downward by the pair of rolls 26r set on both sides of the inner ring end surface 2a.
  • the pressing structure 26 is provided with a pressing force applying mechanism.
  • the pressing force applying mechanism may be any mechanism that can move the pair of rolls 26r vertically downward with respect to the inner ring end surface 2a.
  • the base end portions of the pair of roll holders 26h are vertically upward based on the “lever principle” using a screw shaft provided perpendicularly to the middle of the pair of roll holders 26h.
  • the tip end portions of the pair of roll holders 26h can be moved vertically downward about the fulcrum, and the pair of rolls 26r is moved vertically downward with respect to the inner ring end surface 2a.
  • wheel 2 can be press-contacted to each mounting surface 10s (refer FIG. 2) of the some structure (nosepiece) 10 for a bearing ring mounting.
  • the inner ring 2 is sandwiched between the pressure contact structure 26 and a plurality of bearing ring mounting structures (nosepieces) 10 by pressing the inner ring 2 to each mounting surface 10 s by the pressure contact structure 26.
  • the inner ring 2 can be rotated integrally with each bearing ring mounting structure (nosepiece) 10.
  • the relationship between the pressure contact structure 26 and the inner ring 2 has been described, but the same applies to the outer ring 4 (see FIG. 3B).
  • Rolls 26r are set on both sides of the outer ring end face 4a (see FIG. 3B), and thereby the outer ring 4 is brought into pressure contact with each mounting surface 10s of the plurality of bearing ring mounting structures (nosepieces) 10. Can do.
  • the stop position control of the pair of roll holders 26h (in other words, the stop position control of the pair of rolls 26r)
  • the “model number” and “product number” assigned to each of the inner ring 2 and the outer ring 4 are input to a control device (not shown), and the output shaft of each of the above AC servo motors by an encoder (rotation detector) not shown.
  • the present position (coordinate) signal is compared with the target position (coordinate) signal, and feedback control (position control or speed control) is performed while detecting the rotational position and rotational speed of.
  • the AC servo motor described above is operated (rotated) in a direction to reduce the difference from the target position (coordinate). Then, by repeating this procedure until the target value is finally reached or enters the allowable range, the stop position control of the pair of roll holders 26h is performed.
  • the current position information of the AC servo motor described above is digitally recorded, and a difference to the target position (coordinate) signal is given to the current position information so that the target value is reached at once. Good.
  • the stop position of the pair of roll holders 26h is the pair of rolls 26r.
  • the first position (coordinates) is set at both sides of the inner ring end face 2a
  • the second position (coordinates) is set at a pair of rolls 26r at both sides of the outer ring end face 4a.
  • the AC servo motor is operated (rotated) so as to eliminate the difference between the first position signal (coordinates) and the second position signal (coordinates), so that the pair of rolls 26r can be moved to the first position (coordinates).
  • this is referred to as “pressure roll inner / outer ring set switching”.
  • the raceway surfaces (inner ring raceway surface 2s, outer ring raceway surface 4s) of the race rings 2 and 4 rotatably held by the race ring holding mechanism 6 described above continue.
  • superfinishing is performed by the raceway surface machining mechanism 8.
  • the raceway surface machining mechanism 8 includes a raceway surface grindstone holder Ha, Hb that supports both the inner ring raceway surface grindstone 8a and the outer ring raceway surface grindstone 8b, and raceway surfaces (inner ring raceway surface 2s, outer ring raceway surface).
  • a holder moving turning means 28 capable of moving the raceway surface grindstone holders Ha, Hb in a desired direction and turning at a desired angle is provided.
  • the inner ring 2 (or outer ring) integrated with each bearing ring mounting structure (nosepiece) 10 by the pair of rolls 26r described above. 4) is rotated in the predetermined direction K along with the rotation of the turntable 12, and the inner ring raceway surface grindstone 8a (or outer ring) is perpendicular to the inner ring raceway surface 2s (or outer ring raceway surface 4s).
  • the inner ring raceway surface 2s (or the outer ring raceway surface 4s) while oscillating (slightly reciprocating) while pressing the raceway surface grindstone 8b) at a predetermined pressure Fa, Fb (see FIGS. 1A and 1B). The process of traversing along is performed.
  • the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) is set at the superfinishing start position.
  • the superfinishing start position is a position where the inner ring raceway surface grindstone 8a (or outer ring raceway surface grindstone 8b) is positioned in the vertical direction with respect to the inner ring raceway surface 2s (or outer ring raceway surface 4s). Is assumed. In this case, the shape, inclination angle, width, etc. of the inner ring raceway surface 2s (or outer ring raceway surface 4s) are specified according to the “model number”, “product number”, etc. of the race rings (inner ring 2, outer ring 4). Therefore, the posture and position of the inner ring raceway surface grindstone 8a (or outer ring raceway surface grindstone 8b) with respect to the inner ring raceway surface 2s (or outer ring raceway surface 4s) must be adjusted accordingly.
  • the holder movement turning means 28 is provided with a configuration for performing such adjustment.
  • the holder moving turning means 28 is a movable body (not shown) that can move in the direction X across the inner ring 2 (or the outer ring 4) integrated with each track ring mounting structure (nosepiece) 10.
  • a rotary holder 30 that is rotatable in the ⁇ direction and a slider 32 that is movable in the Z direction.
  • the rotation axis (not shown) of the rotation holder 30 is set in a direction orthogonal to the rotation axis Ax of the above-described bearing ring holding mechanism 6 (the turntable 12).
  • the slider 32 is mounted on the rotary holder 30, and the slide direction Z is set in a direction orthogonal to the rotation axis of the rotary holder 30.
  • the holder moving and turning means 28 can be realized by a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • a ball screw a structure in which a ball rolls and rotates between a screw shaft and a nut
  • an AC servo motor is connected to the screw shaft, and the screw shaft is rotated by the AC servo motor. Control is sufficient.
  • an AC servo motor may be connected to the rotary shaft, and the rotary shaft may be rotationally controlled by the AC servo motor.
  • the slider 32 may be connected to the screw shaft arranged in the Z direction via a nut, and an AC servo motor may be connected to the screw shaft, and the screw shaft may be rotationally controlled by the AC servo motor. .
  • the process until the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) is set to the superfinishing start position can be arbitrarily set.
  • the rotary holder 30 is rotated by a predetermined angle in the ⁇ direction. The rotation angle at this time is adjusted based on the inclination angle of the inner ring raceway surface 2s (or the outer ring raceway surface 4s).
  • the slider 32 is slid in the Z direction so that the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) is disposed opposite to the inner ring raceway surface 2s (or outer ring raceway surface 4s).
  • the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) is set to the superfinishing start position. Can be set.
  • the directions of the pressures Fa and Fb (see FIGS. 1A and 1B) with respect to the inner ring raceway surface 2s (or outer ring raceway surface 4s) are the above-described tracks.
  • the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) may be set at the superfinishing start position so as to coincide with the radial direction passing through the rotation axis Ax of the wheel holding mechanism 6 (the turntable 12). preferable.
  • the stop position control of the holder moving turning means 28 (in other words, the inner ring raceway surface grindstone 8a).
  • the “model number” or “part number” assigned to each of the inner ring 2 and the outer ring 4 is input to a control device (not shown) and illustrated.
  • the AC servo motor described above is operated (rotated) in a direction to reduce the difference from the target position (coordinate). Then, by repeating this procedure until the target value is finally reached or enters the allowable range, the stop position control of the holder moving and turning means 28 is performed.
  • the current position information of the AC servo motor described above is digitally recorded, and a difference to the target position (coordinate) signal is given to the current position information so that the target value is reached at once. Good.
  • the stop position of the holder moving swivel means 28 is the inner ring raceway surface 2s.
  • the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) from the direction perpendicular to the inner ring raceway surface 2s (or outer ring raceway surface 4s). Is pressed at predetermined pressures Fa and Fb (see FIGS. 1A and 1B).
  • Such processing may be performed after the inner ring 2 (or outer ring 4) is rotated in a predetermined direction K as the turntable 12 rotates, or the inner ring 2 (or outer ring 4) is moved in a predetermined direction. It may be performed at the same time as rotating to K or before rotating.
  • the end of the slider 32 is provided with a grindstone pressing means 34 (that is, a pressure head 34) that also serves as an inner / outer ring.
  • the pressure head 34 holds the raceway surface grindstone holders Ha and Hb movably in a predetermined direction. Then, by moving the raceway surface grindstone holders Ha, Hb in a predetermined direction, the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) is moved to the inner ring raceway surface 2s (or The outer ring raceway surface 4s) is pressed with predetermined pressures Fa and Fb (see FIGS. 1A and 1B).
  • the above-mentioned track surface grindstone holders Ha, Hb are arranged on both sides of the pressure head 34 so as to face each other.
  • a raceway surface grindstone holder Ha that supports the inner ring raceway surface grindstone 8a (hereinafter referred to as an inner ring raceway surface grindstone holder Ha) is disposed on the left side of the drawing, and on the right side of the drawing.
  • a raceway surface grindstone holder Hb for supporting the outer ring raceway surface grindstone 8b (hereinafter referred to as an outer ring raceway surface grindstone holder Hb) is disposed.
  • the pressure head 34 is provided with a pair of guide shafts 36a and 36b in parallel with each other, and the guide shafts 36a and 36b are configured and arranged to be movable in the same direction while maintaining a parallel state. ing. Further, an inner ring raceway surface grindstone holder Ha and an outer ring raceway surface grindstone holder Hb are attached to both sides of the pair of guide shafts 36a, 36b. In this case, the inner ring raceway surface grindstone 8a supported by the inner ring raceway surface grindstone holder Ha and the outer ring raceway surface grindstone 8b supported by the outer ring raceway surface grindstone holder Hb are in the same direction on the same plane. Are arranged and arranged in a positional relationship arranged in a line along.
  • the inner ring raceway surface grindstone holder Ha and the outer ring raceway surface grindstone holder Hb are simultaneously moved in the same direction, thereby the inner ring raceway.
  • the surface grindstone 8a and the outer ring raceway surface grindstone 8b can be simultaneously moved (slid) in the same direction.
  • the inner ring raceway surface grindstone holder Ha and the outer ring raceway surface grindstone holder Hb move simultaneously in the same direction.
  • the raceway surface grindstone 8a and the outer ring raceway surface grindstone 8b can be simultaneously moved (slid) in the same direction.
  • a pressure piston is constructed in the pressure head 34 between the pair of guide shafts 36a and 36b in parallel with the guide shafts 36a and 36b.
  • the pressurizing piston includes a piston main body 40 that reciprocates in a cylinder 38 constructed in the pressurizing head 34, and two piston rods 42 a and 42 b extending from both sides of the piston main body 40.
  • the two piston rods 42a and 42b extend in parallel with the above-described pair of guide shafts 36a and 36b.
  • One piston rod 42a is connected to the inner ring raceway surface grindstone holder Ha, and the other piston rod 42b. Is connected to the outer ring raceway surface grindstone holder Hb.
  • pressure accumulating chambers (hereinafter referred to as a left chamber 38a and a right chamber 38b) are formed on both sides of the piston body 40, and either a left chamber 38a or a right chamber 38b is supplied from a compressed air supply source (not shown).
  • the piston main body 40 can be moved by sending compressed air into one of them.
  • the drawing shows a state in which compressed air is fed into the right chamber 38b.
  • the piston main body 40 moves in the direction of the left chamber 38a, so that the two piston rods 42a and 42b are in the same direction. Move to.
  • the inner ring raceway surface grindstone holder Ha and the outer ring raceway surface grindstone holder Hb connected to the piston rods 42a and 42b are simultaneously moved in the same direction while being guided by the pair of guide shafts 36a and 36b. Can be made.
  • the inner ring raceway surface 2s (or outer ring raceway surface 4s) is smoothed with high precision and high precision by the inner ring raceway surface grindstone 8a (or outer ring raceway surface grindstone 8b).
  • the grinding surface Sa of the raceway surface grindstone 8a is preferably configured in a rounded concave shape, while the grinding surface Sb of the outer ring raceway surface grinding stone 8b is configured in a rounded convex shape.
  • the pressure head 34 is used to press the inner ring raceway surface grindstone 8a (or outer ring raceway surface grindstone 8b) against the inner ring raceway surface 2s (or outer ring raceway surface 4s) with pressures Fa and Fb.
  • the compressed air is fed into the left chamber 38a of the cylinder 38, and the inner ring raceway surface grindstone 8a is backed (retreated) together with the inner ring raceway surface grindstone holder Ha.
  • the inner ring raceway surface 2s is set at the superfinishing start position, and at that time, the compressed air is fed into the right chamber 38b so that the inner ring raceway surface grindstone 8a is pressed against the inner ring raceway surface 2s with the pressure Fa.
  • the grindstone 8b for outer ring raceway surfaces.
  • the inner ring 2 (or the outer ring 4) is directed toward the inner ring shoe 44 in order to maintain the machining accuracy constant and high.
  • the inner ring shoe 44 is preferably rotated with the inner ring shoe 44 as a reference.
  • the center axis of the inner ring 2 (or outer ring 4) is set in a fixed direction by a fixed distance with respect to the rotation axis Ax of the above-described track ring holding mechanism 6 in the above-described "nosepiece inner / outer ring set switching". It is necessary to mount it on each mounting surface 10s (see FIG. 2) of the plurality of bearing ring mounting structures (nosepieces) 10 so as to be shifted (eccentric).
  • the inner / outer ring combined super finishing panel of the present embodiment is disposed opposite to the both sides of the bearing ring holding mechanism 6 along the direction orthogonal to the rotation axis Ax,
  • the positions of the bearing rings (inner ring 2 and outer ring 4) to be mounted on the plurality of bearing ring mounting structures (nosepieces) 10 are adjusted, and the bearing rings (inner ring 2, outer ring 4) are directed toward the shoes 44 and 46.
  • a pair of positioning mechanisms an inner ring positioning mechanism and an outer ring positioning mechanism).
  • a pair of positioning mechanisms are used for an inner ring that is also used as a configuration that supports the outer diameter surface of the inner ring 2 (or outer ring 4) during super finishing.
  • the inner ring positioning pusher 48 (or outer ring positioning pusher) that presses the inner ring 2 (or outer ring 4) toward the shoe 44 (or outer ring shoe 46) and the inner ring shoe 44 (or outer ring shoe 46). 50) and positioning that enables each shoe 44, 46 and each positioning pusher 48, 50 to approach the inner ring 2 (or outer ring 4) and to be separated from the inner ring 2 (or outer ring 4).
  • Mechanism moving means that is, inner ring positioning mechanism moving means or outer ring positioning mechanism moving means).
  • the outer ring shoe 46 and the outer ring positioning pusher 50 are separated (retracted) from the inner ring 2, and the other inner ring shoe 44 and inner ring shoe are used.
  • the positioning pusher 48 is approached (advanced) toward the inner ring 2 and the inner ring 2 is pressed against the inner ring shoe 44 by the other inner ring positioning pusher 48, thereby pressing the inner ring 2 toward the inner ring shoe 44.
  • the inner ring shoe 44 can be set to be rotatable with reference to the inner ring shoe 44 (see FIGS. 1A and 3A). In FIG. 3A, the inner ring positioning pusher 48 is omitted.
  • the raceway to be processed is the outer ring 4
  • the other inner ring shoe 44 and the inner ring positioning pusher 48 are separated (retracted) from the outer ring 4, and one outer ring shoe 46 and the outer ring positioning pusher 50 are moved.
  • the outer ring 4 is approached (advanced) toward the outer ring 4, and the outer ring 4 is pressed against one outer ring shoe 46 by one outer ring positioning pusher 50, thereby pressing the outer ring 4 toward the outer ring shoe 46.
  • the shoe 46 can be set to be rotatable with reference to the shoe 46 (see FIGS. 1B and 3B). In FIG. 3B, the outer ring positioning pusher 50 is omitted.
  • the inner ring shoe 44 is moved to the inner ring shoe 44 along the direction of the arrow X1 so as to approach the inner ring 2 during the positioning of the inner ring 2 and the subsequent super finishing.
  • a pair of inner ring rolls 44r is provided that contacts the outer diameter surface of the inner ring 2 (the inner ring raceway surface 2s or the collar portion (surface) 2t) and rotates together with the inner ring 2.
  • the pair of inner ring rolls 44r are disposed to face each other along a direction that intersects (orthogonally) the movement direction X1 of the inner ring shoe 44, and are symmetrical with respect to the rotation axis Ax of the track ring holding mechanism 6. Is set.
  • the pair of inner ring rolls 44r are each supported by an inner ring roll holder 44h so as to be rotatable (for example, rotation free).
  • the height position and the radial position of the inner ring roll 44r with respect to the inner ring 2 are adjusted, and a pair of inner ring rolls 44r is positioned during positioning of the inner ring 2 and subsequent superfinishing. Is provided with an adjustment mechanism that makes it possible to accurately apply the torque to the outer diameter surface of the inner ring 2.
  • the height position means the height (width) from the mounting surface 10s to the inner ring end surface 2a in a state where the inner ring 2 is mounted on the mounting surface 10s (see FIG. 2) of the bearing ring mounting structure (nosepiece) 10.
  • the radial position is assumed to be the distance (interval) between the outer diameter surface of the inner ring 2 and the inner ring roll 44r along the radial direction defined through the rotation axis Ax of the bearing ring holding mechanism 6. To do.
  • the height position and the radial position of each inner ring roll 44r are adjusted in advance before the inner ring shoe 44 is operated, and are maintained in the adjusted state.
  • dovetail grooves 44g extended in the vertical direction on the end surface (side surface facing the inner ring 2) of each inner ring roll holder 44h are provided.
  • Each of the inner ring rolls 44r is formed and inserted into each dovetail groove 44g, and each hozo member 44p is moved along the dovetail groove 44g.
  • the height position of the roll 44r can be adjusted.
  • the screwing structure 44s is shown as an example of the positioning and fixing structure, but other methods may be used.
  • a radial position adjustment mechanism for example, a pair of guide grooves (not shown) are formed in the inner ring shoe 44 along the radial direction defined through the rotation axis Ax, and each inner ring roll holder A part of 44h is inserted (engaged) into each guide groove, and each inner ring roll holder 44h is moved along the guide groove in the direction of arrow 44T (see FIG. 1B), thereby The radial position of the inner ring roll 44r can be adjusted.
  • a screwing structure (not shown) can be applied, but other methods may be used.
  • the inner ring positioning pusher 48 moves the inner ring positioning pusher 48 along the direction of the arrow E1 so that the inner ring positioning pusher 48 approaches the inner ring 2.
  • it is configured as a roll that contacts the outer diameter surface of the inner ring 2 and rotates together with the inner ring 2.
  • the inner ring raceway surface grindstone 8a is in pressure contact with the inner ring raceway surface 2s during the superfinishing process for the inner ring 2, so the inner ring positioning pusher (roll) 48 avoids (offsets) this.
  • the position is set so as to be applied to the outer diameter surface of the inner ring 2.
  • the inner ring positioning pusher (roll) 48 is rotatably supported (for example, rotation-free) by a pusher support member 52, and the pusher support member 52 is moved along the direction of the arrow E 1 by a pusher position adjustment unit 54. And can be stretched.
  • the pusher position adjustment unit 54 adjusts the height position of the inner ring positioning pusher (roll) 48 relative to the inner ring 2 by moving the pusher support member 52 (moving up and down).
  • an adjustment mechanism (not shown) is provided that enables the inner ring positioning pusher (roll) 48 to be accurately applied to the outer diameter surface of the inner ring 2 during subsequent superfinishing. The adjustment mechanism need not be described because it is sufficient to use a known technique as it is.
  • the height position of the inner ring positioning pusher (roll) 48 is adjusted in advance before the pusher 48 is operated, and is maintained in the adjusted state.
  • the inner ring positioning mechanism moving means can be realized by a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • a ball screw a structure in which a ball rolls and rotates between a screw shaft and a nut
  • an AC servo motor is connected to the screw shaft.
  • the rotation of the screw shaft may be controlled by a servo motor.
  • the pusher support member 52 is connected to the screw shaft arranged along the arrow E1 direction via a nut, and the AC servo motor is connected to the screw shaft. What is necessary is just to carry out rotation control of the screw shaft.
  • the inner ring 2 is pressed toward the inner ring shoe 44 during the positioning of the inner ring 2 and the subsequent superfinishing process, and the inner ring shoe 44 is rotated with reference to the inner ring shoe 44.
  • the center axis of the inner ring 2 is shifted (decentered) in a certain direction by a certain distance with respect to the rotation axis Ax of the bearing ring holding mechanism 6
  • the inner ring shoe 44 and the inner ring positioning The process until the pusher 48 is set can be arbitrarily set.
  • the pusher support member 52 is moved in the E1 direction so that the inner ring positioning pusher 48 is mounted on each mounting surface 10s (see FIG. 2) of the plurality of bearing ring mounting structures (nosepieces) 10 described above.
  • the inner ring shoe 44 is moved in the direction of the arrow X1 to bring the pair of inner ring rolls 44r closer to the inner ring 2 and fixed at the target position.
  • the pusher support member 52 is moved in the direction of the arrow E1 to bring the inner ring positioning pusher 48 closer to the inner ring shoe 44, so that the inner ring 2 faces the inner ring shoe 44. Press.
  • the inner ring 2 is pressed toward the inner ring shoe 44, and the inner ring shoe 44 is rotated with reference to the inner ring shoe 44.
  • the inner ring shoe 44 and the inner ring positioning pusher 48 can be set.
  • the outer ring shoe 46 and the outer ring positioning pusher 50 are separated (retreated) from the inner ring 2 while the setting process as described above is performed.
  • the outer ring shoe 46 is moved in the direction of the arrow X2 so as to approach the outer ring 4 while the outer ring 4 is positioned and thereafter superfinishing.
  • a pair of outer ring rolls 46r is provided that contacts the outer diameter surface (outer ring raceway surface 4s) of the outer ring 4 and rotates together with the outer ring 4.
  • the pair of outer ring rolls 46r are arranged to face each other along a direction transverse (orthogonal) to the moving direction X2 of the outer ring shoe 46, and are symmetrical with respect to the rotation axis Ax of the track ring holding mechanism 6. Is set.
  • the pair of outer ring rolls 46r are supported by the outer ring roll holder 46h so as to be rotatable (for example, rotation free).
  • Each of the outer ring roll holders 46h adjusts the height position and the radial position of the outer ring roll 46r with respect to the outer ring 4, and a pair of outer ring rolls 46r during positioning of the outer ring 4 and subsequent super finishing. Is provided with an adjustment mechanism that makes it possible to accurately apply the torque to the outer diameter surface of the outer ring 4.
  • the height position refers to the height (width) from the mounting surface 10s to the outer ring end surface 4a when the outer ring 4 is mounted on the mounting surface 10s (see FIG. 2) of the bearing ring mounting structure (nosepiece) 10.
  • the radial position is assumed to be the distance (interval) between the outer diameter surface of the outer ring 4 and the outer ring roll 46r along the radial direction defined through the rotation axis Ax of the track ring holding mechanism 6. To do.
  • the height position and the radial position of each outer ring roll 46r are adjusted in advance before the outer ring shoe 46 is operated, and are maintained in the adjusted state.
  • dovetail grooves 46g extended in the vertical direction on the end surfaces (side surfaces facing the outer ring 4) of the respective outer ring roll holders 46h are provided.
  • each of the outer ring 4 is formed and inserted into each dovetail groove 46 g and the dowel member 46 p is moved along the dovetail groove 46 g.
  • the height position of the roll 46r can be adjusted.
  • the screwing structure 46s is shown as an example of the positioning and fixing structure, but other methods may be used.
  • a radial position adjusting mechanism for example, a pair of guide grooves (not shown) are formed in the outer ring shoe 46 along the radial direction defined through the rotation axis Ax, and each outer ring roll holder is formed. A part of 46h is inserted (engaged) into each guide groove, and each outer ring roll holder 46h is moved along the guide groove in the direction of arrow 46T (see FIG. 1A), thereby The radial position of the outer ring roll 46r can be adjusted.
  • a screwing structure (not shown) can be applied, but other methods may be used.
  • the outer ring positioning pusher 50 moves the outer ring positioning pusher 50 along the direction of the arrow E2 so that the outer ring positioning pusher 50 approaches the outer ring 4.
  • the roll is configured as a roll that contacts the outer diameter surface of the outer ring 4 and rotates together with the outer ring 4.
  • the outer ring positioning pusher (roll) 50 is rotatably supported by a pusher support member 56 (for example, rotation free), and the pusher support member 56 is moved along the direction of the arrow E2 by a pusher position adjusting unit 58. And can be stretched.
  • the pusher position adjusting unit 58 adjusts the height position of the outer ring positioning pusher (roll) 50 with respect to the outer ring 4 by moving the pusher support member 56 (up and down movement).
  • an adjustment mechanism (not shown) is provided that enables the outer ring positioning pusher (roll) 50 to be accurately applied to the outer diameter surface of the outer ring 4 during subsequent superfinishing.
  • the adjustment mechanism need not be described because it is sufficient to use a known technique as it is.
  • the height position of the outer ring positioning pusher (roll) 50 is adjusted in advance before the pusher 50 is operated, and is maintained in the adjusted state.
  • the outer ring positioning mechanism moving means can be realized by a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • a ball screw a structure in which a ball rolls and rotates between a screw shaft and a nut
  • an AC servo motor is connected to the screw shaft.
  • the rotation of the screw shaft may be controlled by a servo motor.
  • the pusher support member 56 is connected to the screw shaft arranged along the arrow E2 direction via a nut, and the AC servo motor is connected to the screw shaft. What is necessary is just to carry out rotation control of the screw shaft.
  • the outer ring 4 is pressed toward the outer ring shoe 46 during the positioning of the outer ring 4 and the subsequent superfinishing process, and the outer ring shoe 46 is rotated with reference to the outer ring shoe 46.
  • the center axis of the outer ring 4 is shifted (decentered) in a certain direction by a certain distance with respect to the rotation axis Ax of the bearing ring holding mechanism 6
  • the outer ring shoe 46 and the outer ring positioning The process until the pusher 50 is set can be arbitrarily set.
  • the pusher support member 56 is moved in the E2 direction so that the outer ring positioning pusher 50 is mounted on each mounting surface 10s (see FIG. 2) of the plurality of bearing ring mounting structures (nosepieces) 10 described above.
  • the outer ring 4 close to the outer ring 4 and bringing it into contact with the outer diameter surface, approximate positioning between the central axis of the outer ring 4 and the rotation axis Ax of the race ring holding mechanism 6 is performed.
  • the outer ring shoe 46 is moved in the direction of the arrow X2 to bring the pair of outer ring rolls 46r closer to the outer ring 4 and fixed at the target position.
  • the pusher support member 56 is moved in the direction of arrow E2 to bring the outer ring positioning pusher 50 closer to the outer ring shoe 46, so that the outer ring 4 faces the outer ring shoe 46. Press.
  • the outer ring 4 is pressed toward the outer ring shoe 46, and the outer ring shoe 46 is rotated as a reference.
  • the outer ring shoe 46 and the outer ring positioning pusher 50 can be set.
  • the inner ring shoe 44 and the inner ring positioning pusher 48 are separated (retreated) from the outer ring 4.
  • the inner ring 2 (or the outer ring 4) is pressed toward the inner ring shoe 44 (or the outer ring shoe 46), and is rotated based on the inner ring shoe 44 (or the outer ring shoe 46).
  • the inner ring shoe 44 (or outer ring shoe 46) and the inner ring positioning pusher 48 (or outer ring positioning pusher 50) are set, the above-described positioning mechanism moving means (that is, the inner ring positioning mechanism) is set.
  • the “model number”, “product number”, etc. assigned to the inner ring 2 and the outer ring 4 are input to a control device (not shown), not shown.
  • the AC servo motor described above is operated (rotated) in a direction to reduce the difference from the target position (coordinate). Then, the above-described stop position control of the positioning mechanism moving unit is performed by repeating this procedure until the target value is finally reached or the allowable value is entered.
  • the current position information of the AC servo motor described above is digitally recorded, and a difference to the target position (coordinate) signal is given to the current position information so that the target value is reached at once. Good.
  • the stop position of the positioning mechanism moving unit described above is the inner ring 2.
  • the inner ring shoe 44 and the inner ring positioning pusher 48 are set so that the inner ring shoe 44 and the inner ring positioning pusher 48 are rotated with reference to the inner ring shoe 44 and the outer ring 4.
  • the outer ring shoe 46 and the outer ring positioning pusher 50 are limited to two positions (coordinates) where the outer ring shoe 46 and the outer ring positioning pusher 50 are set so as to be pressed toward the outer shoe 46 and rotated with reference to the outer ring shoe 46.
  • a position “inner ring set” (FIG. 1 (a), FIG. 3 (a)) at which the inner ring shoe 44 and the inner ring positioning pusher 48 are set so as to rotate with respect to the inner ring shoe 44;
  • the position “outer ring set” where the outer ring shoe 46 and the outer ring positioning pusher 50 are set so that the outer ring 4 is pressed toward the outer ring shoe 46 and rotated with the outer ring shoe 46 as a reference (FIG. 1). (b) and FIG. 3 (b)) can be automatically switched.
  • switching of inner and outer rings of shoe pusher this is referred to as “switching of inner and outer rings of shoe pusher”.
  • the super finishing process for the inner ring 2 and the outer ring 4 can be automatically performed with a single (one) facility.
  • switching between a set (specification) for super finishing for the inner ring 2 and a set (specification) for super finishing for the outer ring 4 is performed automatically.
  • the technology that makes this possible can be realized.
  • a plurality of race rings are mounted by “switching the inner and outer ring sets of the nosepiece”.
  • the structural body (nosepiece) 10 can be automatically switched between a set for holding the inner ring 2 and a set for holding the outer ring 4.
  • the inner ring 2 (or the outer ring 4) can be automatically mounted on each mounting surface 10s (FIGS. 2A and 2B).
  • the inner ring raceway surface grindstone 8a and the outer ring raceway surface grindstone 8b are directed to the superfinishing machining start position of the inner ring raceway surface 2s by “switching the inner and outer ring sets at the superfinishing processing start position”.
  • the inner ring raceway surface grindstone 8a or the outer ring raceway surface grindstone 8b with respect to the superfinishing start position of the inner ring raceway surface 2s (or outer ring raceway surface 4s) of the inner ring 2 (or outer ring 4).
  • the inner ring raceway surface grindstone 8a (or the outer ring raceway surface grindstone 8b) and the pair of inner ring rolls 44r of the inner ring shoe 44 (or the pair of inner ring rolls 46r of the outer ring shoe 46) are:
  • the inner ring raceway surface 2s (or the outer ring raceway surface 4s) has a positional relationship in which the pressure Fa of the inner ring raceway surface grindstone 8a (or the pressure Fb of the outer ring raceway surface grindstone 8b) cancels out.
  • the rotating inner ring 2 (or outer ring 4) is always pressed toward the inner ring shoe 44 (or outer ring shoe 46).
  • the inner ring 2 (or outer ring 4) can be rotated with reference to the inner ring shoe 44 (or outer ring shoe 46), so that the inner ring raceway surface 2s (or outer ring raceway surface 4s) can be rotated.
  • Super-finishing can be performed with extremely high accuracy.
  • the super finishing processing for the inner ring 2 and the outer ring 4 can be automatically performed by a single (one) facility, so that the super finishing processing equipment dedicated to the inner ring raceway surface as in the prior art, Since it is not necessary to provide the super finishing processing equipment dedicated to the raceway surface independently, it is not necessary to secure the installation space by that amount, and the capital investment cost and power consumption can be reduced. Thereby, it is possible to achieve significant cost reduction, space saving, and energy saving as compared with the conventional case.
  • switching between a set (specification) for super finishing for the inner ring 2 and a set (specification) for super finishing for the outer ring 4 is performed automatically.
  • the positioning work of the holding member for holding the inner ring 2 and the outer ring 4 and the positioning work of the super finishing grindstones 8a and 8b with respect to the inner ring raceway surface 2s and the outer ring raceway surface 4s are all possible. As a result, the labor and time required for super-finishing can be greatly reduced.
  • the present invention is not limited to this, and a double-row cylindrical and conical inner ring 2 (FIGS. 5A to 5C) having a collar portion (surface) 2t, and an outer ring 4 having various other outer ring raceway surfaces 4s. Needless to say, super finishing can also be performed in the same way (FIGS. 5D to 5G). In particular, the super-finishing of the double-row inner and outer rings 2, 4 (Figs. 5 (b), (c), (f), (g)) can also be performed with one chuck, dramatically improving the processing efficiency. Can be made.
  • the inner ring 2 (or the outer ring 4) is integrated with each track ring mounting structure (nosepiece) 10 by the pair of rolls 26r in the “pressure roll inner / outer ring set switching”.
  • the rotating base 12 constituting one structure of the bearing ring holding mechanism 6 is configured as a magnet chuck
  • each bearing ring mounting structure (nosepiece) 10 is configured of a conductive material.
  • the inner ring 2 (or the outer ring 4) having conductivity may be attracted to and integrated with each track ring mounting structure (nose piece) 10 by the magnetic action of the magnet chuck.
  • the magnet chuck and the pair of rolls 26r may be used in combination.
  • each track ring mounting structure (nose piece) 10 When the inner ring 2 (or outer ring 4) is attracted to each track ring mounting structure (nose piece) 10 by a magnet chuck (that is, when the inner ring shoe 44 (or outer ring shoe 46) is not used).
  • the inner ring 2 (or outer ring 4) is connected to each bearing ring mounting structure (nose piece) so that the central axis of the inner ring 2 (or outer ring 4) and the rotation axis Ax of the bearing ring holding mechanism 6 coincide with each other. 10 is mounted.
  • the brim portion superfinishing processing unit U2 of the present embodiment includes a plurality of brim portions (surfaces) 2t (in the figure, one brim portion (surface) 2t). It is possible to perform superfinishing with respect to (shown) automatically at the same time with a single (one) facility. Thereby, it is possible to perform the super finishing process for each collar portion (surface) 2t fully automatically at the same time as the super finishing process for the inner ring raceway surface 2s.
  • the brim portion superfinishing processing unit U2 supports one brim portion grindstone 60a.
  • the collar part machining head 60, the collar part machining head 60 are supported in a reversible manner, and the reversing mechanism 62 for reversing the collar part grindstone 60a around the reversing axis R at a desired angle, and the reversing mechanism 62 are supported.
  • the reversing mechanism 62 and the collar portion machining head 60 are swung in a desired direction ⁇ , and an operating device 64 is provided for minute reciprocation (oscillation) Os.
  • the actuating device 64 has a rotating shaft 66 (see FIG. 7B) that can be rotated by the driving source M, and converts the rotating motion of the rotating shaft 66 into a reciprocating motion and transmits it to the reversing mechanism 62.
  • An oscillation mechanism 68 configured to reciprocate the collar part grindstone 60a of the collar part machining head 60 and a rotary shaft 66 concentrically, and by turning the reversing mechanism 62, the collar part grindstone of the collar part machining head 60 is rotated.
  • a turning mechanism 70 that turns the 60a to a desired angle.
  • the oscillation mechanism 68 is provided integrally with the rotation shaft 66. When the rotation center is eccentric (displaced) from the rotation center of the rotation shaft 66, the oscillation mechanism 68 is eccentric (see FIG. 7B). An oscillation portion 68p that is attached to the shaft portion 66p so as to be rotatable relative to the shaft portion 66p and supports the reversing mechanism 62 is provided.
  • the turning mechanism 70 can be rotated concentrically with the rotation shaft 66 of the oscillation mechanism 68, and the angle adjustment gear shaft portion 72, which is a separate shaft from the rotation shaft 66, and the angle adjustment gear shaft portion 72.
  • An angle adjustment table 74 that is connected and rotates the oscillation unit 68p to a desired angle is provided.
  • the angle adjusting gear shaft portion 72 is fixed concentrically along the outer periphery of the spindle shaft 76 and the hollow spindle shaft 76 (see FIG. 7B) provided concentrically along the outer periphery of the rotating shaft 66.
  • a hollow annular angle adjusting gear 78 (see FIG. 7B).
  • the angle adjustment table 74 described above is fixed to the angle adjustment gear 78 and rotates concentrically with the spindle shaft 76 together with the angle adjustment gear 78.
  • a plurality of (for example, two in the drawing) bearings 80 are interposed between the rotary shaft 66 and the spindle shaft 76, and the rotary shaft 66 is driven by these bearings 80. And the spindle shaft 76 are positioned so as to be relatively rotatable. Further, the spindle shaft 76 is provided in a fixed housing 84 (see FIG. 7B) via a plurality of bearings 82 (see FIG. 7B) provided on the outer periphery of the spindle shaft 76 (see FIG. 7B). The drive source M is mounted on the fixed housing 84 and is positioned so as to be rotatable.
  • the oscillation mechanism 68 in the oscillation mechanism 68, the above-described oscillation portion 68p and the eccentric shaft portion 66p are coupled via a bearing 86 so as to be relatively rotatable.
  • the oscillation unit 68p is a gear mechanism 88 (specifically, meshed with the angle adjustment gear shaft portion 72 (specifically, the angle adjustment gear 78 to which the angle adjustment table 74 is fixed) by an AC servo motor described later. The rotation is controlled at a desired angle (described later). For this reason, the oscillation part 68p does not rotate with the eccentric shaft part 66p that rotates eccentrically with the rotary shaft 66 described above.
  • FIG. 7 (c) shows the configuration of the oscillation portion 68p.
  • the oscillation unit 68p is not limited to the configuration shown in FIG. 7C, and may have a configuration other than this.
  • the collar part processing head 60 can be turned to a desired angle ⁇ together with the reversing mechanism 62.
  • the operation of rotating the angle adjusting gear 78 together with the angle adjusting table 74 and turning the collar portion machining head 60 to the desired angle ⁇ includes the gear mechanism 88 meshed with the angle adjusting gear 78 and the AC. It can be realized by a combination with a servo motor. Although not particularly illustrated, for example, an AC servo motor may be connected to the rotation shaft of the gear mechanism 88, and the rotation shaft may be rotationally controlled by the AC servo motor. Thereby, the collar part processing head 60 can be rotated to desired angle (theta).
  • Such a brim portion superfinishing processing unit U2 is mounted on a Z-axis table 90 that is movable in the arrow Z direction, and the above-described fixed housing 84, together with the drive source M mounted on the Z-axis table 90, 90 is fixed on. Further, the Z-axis table 90 is mounted on an X-axis table 92 that can move in the arrow X direction. According to this, by moving the Z-axis table 90 and the X-axis table 92 to a desired distance (position), the collar part machining head 60 can be moved in a desired direction by a desired amount (distance).
  • the operation of moving the Z-axis table 90 and the X-axis table 92 to each desired distance (position) is a combination of a ball screw (a structure in which a ball rolls and rotates between a screw shaft and a nut) and an AC servo motor.
  • a ball screw a structure in which a ball rolls and rotates between a screw shaft and a nut
  • an AC servo motor is connected to the screw shaft.
  • the rotation of the screw shaft may be controlled by a servo motor.
  • the X-axis table 92 is connected to the screw shaft arranged along the arrow X direction via a nut, and the AC servo motor is connected to the screw shaft.
  • the rotation of the shaft may be controlled.
  • the turning control of the collar part machining head 60 by the angle adjustment table 74 and the movement control of the collar part machining head 60 by the Z-axis table 90 and the X-axis table 92 finally reach the target value.
  • the brim portion super finishing unit U2 is set at a position where it does not interfere with the inner / outer ring combined raceway surface super finishing unit U1.
  • the flange portion grindstone 60a supported by the flange portion processing head 60 can be set on the flange portion (surface) 2t of the inner ring 2.
  • the inner ring 2 with a collar is provided.
  • the “model number” and “product number” assigned for each type are input to a control device (not shown), and an encoder (rotation detector) (not shown) While detecting the rotational speed, the current position (coordinate) signal and the target position (coordinate) signal are compared to perform feedback control (position control or speed control).
  • the AC servo motor described above is operated (rotated) in a direction to reduce the difference from the target position (coordinate). Then, by repeating this procedure until the target value is finally reached or the allowable range is entered, stop position control of the angle adjustment table 74, the Z-axis table 90, and the X-axis table 92 is performed.
  • the current position information of the AC servo motor described above is digitally recorded, and a difference to the target position (coordinate) signal is given to the current position information so that the target value is reached at once. Good.
  • the collar portion grindstone 60a is set on the collar portion (surface) 2t of the inner ring 2, and in this state, the oscillation mechanism 68 described above is operated, specifically, by the drive source M.
  • the rotary shaft 66 is rotated, and the rotational motion is converted from the eccentric shaft portion 66p to the reciprocating motion via the oscillation portion 68p and transmitted to the reversing mechanism 62, and the collar portion grindstone 60a of the collar portion machining head 60 is slightly changed.
  • reciprocation (oscillation) Os even when the above-described superfinishing process is performed on the inner ring raceway surface 2s, the superfinishing process can be performed on the collar portion (surface) 2t at the same time.
  • the brim part super finishing unit U2 of the present embodiment supports the brim part machining head 60 in a reversible manner, and reverses the collar part grindstone 60a around the reverse axis R at a desired angle. Therefore, it is possible to automatically perform super finishing for a plurality of collar portions (surfaces) 2t in a single (one) facility at the same time.
  • the angle adjustment table 74 and the Z-axis table 90 described above are used. Then, the stop position control of the X-axis table 92 is performed, the collar portion grindstone 60a is set on the collar surface 2t on one side, the collar portion grindstone 60a is slightly reciprocated (oscillated) Os, and the collar surface 2t Super finishing for
  • the stop position control of the angle adjustment table 74, the Z-axis table 90, and the X-axis table 92 described above is performed again to set the brim portion grindstone 60a on the other brim surface 2t (or , Before setting), the collar portion machining head 60 is reversed by the reversing mechanism 62 and the collar portion grinding stone 60a is reversed by 180 ° around the reversing axis R. Thereby, the superfinishing process with respect to the other collar surface 2t can be performed with the said grindstone 60a for collar parts.
  • the angle adjustment table 74 and the Z-axis table 90 described above are assumed.
  • the stop position of the X-axis table 92 includes a first position (coordinates) for setting the collar portion grindstone 60a on one side collar surface 2t, and a second position for setting the collar portion grindstone 60a on the other side collar surface 2t. It is limited to two locations (coordinates).
  • the collar part grindstone 60a is moved to the first position ( (Coordinates) and the second position (coordinates) can be automatically switched.
  • the super-finishing processing for the plurality of collar portions (surface 2t) of the inner ring 2 with the collar can be performed simultaneously with a single (one) facility.
  • the super finishing for the plurality of collar portions (surfaces) 2t can be performed fully automatically simultaneously with the super finishing for the inner ring raceway surface 2s.
  • the superfinishing processing for a plurality of collar portions (surface 2t) can be automatically performed by a single (one) facility, so that a plurality of collar portions (surfaces) dedicated to conventional ones can be used. Since it is not necessary to provide each superfinishing device independently, the device can be reduced in size accordingly, and the capital investment cost and power consumption can be reduced. Thereby, significant cost reduction and energy saving can be achieved.
  • switching between the setting of the brim portion grindstone 60a for the one brim surface 2t and the setting of the brim portion grindstone 60a for the other brim surface 2t can be performed fully automatically at the same time.
  • the positioning work of the brim portion grindstone 60a with respect to the plurality of brim surfaces 2t becomes unnecessary, and as a result, labor and time required for super finishing can be greatly reduced.
  • the drive source M for rotating the rotary shaft 66 is fixed to the Z-axis table 90 via the fixed housing 84, so that, for example, the power cable of the drive source M ( It is possible to prevent the occurrence of problems such as twisting of the (not shown) or failure of the drive source M.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

Afin de pouvoir effectuer un super-finissage automatique d'une bague intérieure et d'une bague extérieure par une seule pièce d'équipement et effectuer de façon entièrement automatique un passage entre un ensemble pour le super-finissage de la bague intérieure et un ensemble pour le super-finissage de la bague extérieure, une machine de super-finissage utilisée pour bagues intérieure et extérieure comprend un mécanisme de maintien (6) de bague d'appui destiné à maintenir rotatives des bagues d'appui (2, 4), et un mécanisme de traitement (8) de surface de chemin de roulement (2s, 4s) des bagues d'appui. Le mécanisme de maintien de bague d'appui est doté d'un moyen de déplacement de structure destiné à déplacer les structures (10) équipées de bague d'appui vers un axe de rotation (Ax), ou loin de celui-ci, en fonction du type de bague d'appui à traiter. Le mécanisme de traitement de surface de chemin de roulement est doté de supports (Ha, Hb) de pierre à aiguiser de surface de chemin de roulement destinés à supporter des pierres à aiguiser (8a, 8b) de surface de chemin de roulement pour bagues intérieure et extérieure, et d'un moyen de déplacement/rotation (28) de support destiné à déplacer et à faire tourner les supports de pierre à aiguiser de surface de chemin de roulement, et lorsqu'un objet à traiter est la bague intérieure, presse la pierre à aiguiser de surface de chemin de roulement pour bague intérieure contre une surface de chemin de roulement pour bague intérieure, et lorsqu'un objet à traiter est la bague extérieure, presse la pierre à aiguiser de surface de chemin de roulement pour bague extérieure contre une surface de chemin de roulement pour bague extérieure, moment auquel les pierres à aiguiser de surface de chemin de roulement pour bagues intérieure et extérieure traversent tout en oscillant.
PCT/JP2011/073727 2011-02-24 2011-10-14 Machine de super-finissage utilisée pour bagues intérieure et extérieure Ceased WO2012114576A1 (fr)

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JP2011-038155 2011-02-24
JP2011038156A JP5626003B2 (ja) 2011-02-24 2011-02-24 超仕上加工ユニット
JP2011-038156 2011-02-24
JP2011038155A JP5640809B2 (ja) 2011-02-24 2011-02-24 内外輪兼用超仕上盤及び内外輪兼用超仕上加工方法

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CN109676514A (zh) * 2018-10-19 2019-04-26 石家庄常德数控设备有限公司 轮毂轴承外套一次性装夹自动超精双列滚道设备及方法
US20210213776A1 (en) * 2020-01-09 2021-07-15 Alex Global Technology, Inc. Device for removal of wheel rim burr
CN115922501A (zh) * 2022-12-29 2023-04-07 安徽元诚轴承有限公司 推力调心滚子轴承套圈滚道精加工装置及方法
CN117644468A (zh) * 2024-01-29 2024-03-05 洛阳普瑞森精密轴承有限公司 轴承内圈装夹装置

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CN103100959B (zh) * 2013-02-18 2015-10-21 苏州铁近机电科技有限公司 轴承套圈内外轮加工机
EP2803445B1 (fr) 2013-05-14 2015-07-08 Supfina Grieshaber GmbH & Co. KG Dispositif pour l'usinage de finition à la bande d'une pièce
CN111775040A (zh) * 2020-07-07 2020-10-16 宁波安杰森精密机械制造有限公司 一种复合型同步环内外径超精研机
CN112744502B (zh) * 2020-12-30 2022-11-29 重庆品正食品有限公司 苏打水两段提升输送系统

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CN109676514A (zh) * 2018-10-19 2019-04-26 石家庄常德数控设备有限公司 轮毂轴承外套一次性装夹自动超精双列滚道设备及方法
CN109676514B (zh) * 2018-10-19 2024-02-09 石家庄常德数控设备有限公司 轮毂轴承外套一次性装夹自动超精双列滚道设备及方法
US20210213776A1 (en) * 2020-01-09 2021-07-15 Alex Global Technology, Inc. Device for removal of wheel rim burr
US11865670B2 (en) * 2020-01-09 2024-01-09 Alex Global Technology, Inc. Device for removal of wheel rim burr
CN115922501A (zh) * 2022-12-29 2023-04-07 安徽元诚轴承有限公司 推力调心滚子轴承套圈滚道精加工装置及方法
CN117644468A (zh) * 2024-01-29 2024-03-05 洛阳普瑞森精密轴承有限公司 轴承内圈装夹装置
CN117644468B (zh) * 2024-01-29 2024-04-02 洛阳普瑞森精密轴承有限公司 轴承内圈装夹装置

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