JP2007021664A - Tape lapping apparatus having atc - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tape lapping apparatus having an ATC, which apparatus can automatically change the arrangements of various workpieces having different shaft diameters, different shaft widths, etc. by changing only a tape holder integrated type cassette shoe assembly for a machining unit. <P>SOLUTION: The tape lapping apparatus comprises a plurality of common use machining units 50a, 50b which mount the integrated type cassette shoe assembly 11 and are supported on a base 51 so as to move in the axial direction X of a workpiece 72 and in the direction Z to approach to the workpiece 72; and an ATC device 130 capable of automatically changing the integrated type cassette shoe assembly 11, wherein the ATC device 130 comprises a magazine portion 57 for holding a plurality of integrated type changing cassette shoe assemblies 11b mounted to a square shape supporting frame 70 fixed on a base 51 on the upper portions of the common use machining units 50a, 50b; and a moving device 13 for mounting the integrated type changing cassette shoe assemblies 11b of the magazine portion 57 to any of a magazine portion changing position and the common use machining units 50a, 50b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a relatively incompressible abrasive-coated tape, and a relatively rigid material that contacts and presses the surface of a workpiece such as a steel pipe or automobile part having a processed surface that is rotated. The present invention relates to a tape wrap apparatus comprising a shoe assembly having a concave surface, and using an abrasive-coated tape to microfinish the surface of a workpiece with extremely high precision, and in particular, a pair of opening and closing members that support the shoe assembly in the tape wrap apparatus A tape shoe integrated cassette shoe assembly in which an arm, an arm opening / closing device, a tape supply holder, and a tape take-up holder are assembled as an integrally replaceable cassette, and the cassette shoe assembly with an ATC capable of automatic replacement The present invention relates to a tape wrap device.

As a tape wrap device comprising a conventional abrasive-coated tape and a shoe assembly having a rigid surface that contacts and presses the surface of the cylindrical workpiece including the crankshaft, the tape-coated material is, for example, a patent document 1 is disclosed. As shown in FIGS. 7 and 9 of Patent Document 1, this is a pair of arms supported so as to be movable in the axis (X) direction of the workpiece and the orthogonal (Z) direction orthogonal to the axis (X) direction. A pair of or three shoes fixed to the work clamp the rotating shaft or eccentric shaft of the workpiece, and the rotating shaft or eccentric shaft of the workpiece is rotated and revolved to perform micro finishing of the rotating shaft or eccentric shaft. .
Japanese Patent No. 35589117 FIG. 7, FIG. JP-A-8-257889

  Each of the stones forming the rigid concave surface of the shoe assembly and the abrasive covering tape of the conventional film wrap apparatus is manufactured according to the shaft diameter or the shaft width of the cylindrical body workpiece including the crankshaft. Since it is limited to machining only the workpiece shaft diameter or shaft width, if any of the workpiece shaft diameter or shaft width is different, such as the type or model of the crankshaft, a series of dedicated stiffnesses It is necessary to change the setup to replace the shoe assembly having the stone forming the concave surface and the dedicated abrasive-coated tape, and the setup time is long. Furthermore, when processing different types of workpieces having different shaft diameters or shaft widths at random, it is necessary to add a processing arm or a processing station. Patent Document 2 discloses a cartridge storage chamber formed at the front ends of a pair of opening and closing arms, and each cartridge is stored in each cartridge storage chamber so as to face each other, and each cartridge stores an abrasive covering tape on a tape supply reel. And a tape take-up reel are held by being wound together with a shoe that presses the abrasive-coated tape against the work piece, so that different width dimensions can be held, but the tape take-up reel is driven by a motor. As a result, the width becomes wider, and the width becomes wider than the distance between adjacent workpieces of a shaft workpiece such as a crankshaft having a large number of workpieces.

  It is an object of the present invention to automatically replace different types of workpieces such as crankshafts with different workpiece shaft diameters or shaft widths by replacing only the tape holder integrated cassette shoe assembly with the machining unit. An object of the present invention is to provide an ATC-equipped tape wrap device that can be processed flexibly without being processed by a separate film wrap device.

For this reason, the present invention provides a base for arranging a headstock and a tailstock for supporting a workpiece of a shaft including a crankshaft,
A pair of comparatively incompressible abrasive-coated tapes that finish the workpiece shaft, and a pair of pressing the abrasive-coated surface of the tape in contact with the workpiece surface of a shaft such as a crankshaft Tape holder integrated cassette shoe assembly in which an opening / closing arm for supporting a shoe assembly having a concave surface having a rigid rigidity, an arm opening / closing device, a tape supply holder, and a tape take-up holder are assembled as an integrally replaceable cassette;
A plurality of shared processing units mounted on the base so that the integrated cassette shoe assembly is mounted and movable in the axial direction of the workpiece and in the direction of approaching the workpiece;
An ATC device capable of automatically exchanging the integrated cassette shoe assembly,
The ATC apparatus includes a magazine unit for holding a plurality of replacement integrated cassette shoe assemblies attached to a rectangular support frame fixed on the base on the plurality of shared processing units, and the magazine unit. A tape wrapping apparatus with an ATC comprising a moving device between a magazine part replacement position and a mounting position for mounting one of the plurality of integrated cassette shoe assemblies for replacement to either one of the common processing unit. By providing this, the above-mentioned problems of the conventional products were solved.

  With this configuration, the tape wrapping apparatus with ATC of the present invention is supported on the base so that the integrated cassette shoe assembly is attached and is movable in the axial direction of the workpiece and the direction approaching the workpiece. Since it has a plurality of shared processing units and an ATC device that can automatically replace the integrated cassette shoe assembly, different types of workpieces such as crankshafts with different workpiece shaft diameters or shaft widths can be shared By replacing only the tape holder integrated cassette shoe assembly with the processing unit, we can automatically change the setup and provide a tape wrap device with ATC that can be processed flexibly without processing with a separate film wrap device. It became something to do.

  An example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of an ATC-equipped tape wrap device according to an embodiment of the present invention. A dotted line indicates a position where a magazine portion is turned to an integrated cassette shoe assembly replacement position when it has been used. The units 50a and 50b are equipped with the integrated cassette shoe assemblies 11a and 11a, respectively, and the magazine portions 11c and 11c thereon do not hold the replacement integrated cassette shoe assembly 11b. FIG. 2 is a side view of the A side as viewed from the direction A in FIG. 1, and the dotted line shows a state in which the magazine portion is turned to the integrated cassette shoe assembly replacement position when the magazine has been used. Is shown as the magazine exchange position 11b and the attachment position 11a attached to the head of the shared processing unit. FIG. 3 is a front view seen from the direction B in FIG. 1. The magazine unit holds a plurality of replacement integrated cassette shoe assemblies on a rectangular support frame at the magazine unit replacement position. The common processing unit is equipped with the integrated cassette shoe assemblies 11a and 11a and is ready to process the workpiece. FIG. 4A shows a state in which the integrated cassette shoe assembly is in the magazine section replacement position by the automatic tool changer, and FIG. 4B shows a state in which the integrated cassette shoe assembly in the state of FIG. The state attached to the processing unit head is shown. FIG. 5 is a schematic perspective view of an integrated cassette shoe assembly according to an embodiment of the present invention. A pair of opening / closing arms, an arm opening / closing device, a tape supply holder, and a tape take-up holder that support the shoe assembly can be integrally replaced. The integrated cassette shoe assembly is removed from the common processing unit head and the arm is opened. FIG. 6 shows the common processing unit head to which the integrated cassette shoe assembly of FIG. FIG. 7 is a partial perspective view of a main part, and FIG. 7 shows a state where the integrated cassette shoe assembly of FIG. 5 is attached to the common processing unit head of FIG. 6 and the arm is closed. FIG. 8A is a rear elevational view showing the tape supply holder and the tape take-up holder driving device on the back side of the integrated cassette shoe assembly showing the state where the arm of FIG. 7 is closed, and the cover 19 of FIG. 7 is removed. (B) is an enlarged view of the unwinding roller portion G of (a), and (c) is an unwinding roller unwinding position where the link 40 of (b) is moved by a two-dot chain line.

As shown in FIGS. 1 to 8, the tape wrapping device with ATC according to the embodiment of the present invention includes a spindle center 55 of a spindle base 54 that supports a workpiece 72 of a shaft object including a crankshaft, and a tailstock 52. A base 51 in which a tailstock center 53 is disposed;
A relatively incompressible abrasive-coated tape 5 for finishing the workpiece surface 3 (FIGS. 7 and 8A), and the abrasive-coated surface of the tape 5 in contact with the workpiece surface 3 and pressing As a cassette in which the shoe assembly 2 and 2 having a pair of relatively rigid concave surfaces 17 and 2 for supporting the opening and closing arms 15 and 15, the arm opening and closing device 46, the tape supply holder 6 and the tape take-up holder 7 can be integrally replaced Tape holder integrated cassette shoe assembly 11 assembled,
The integrated cassette shoe assembly 11 is mounted and supported on the base 51 so as to be movable in the axial direction X of the workpiece 72 and in the direction Z approaching the workpiece 72, and on the table 65, the drive units 61a, 61b The plurality of common processing units 50a and 50b that can be moved and positioned in the axial direction X of the workpiece 72 by the above, and the ATC device 130 that can automatically replace the integrated cassette shoe assembly 11. The ATC device 130 includes a magazine unit 57 for holding a plurality of replacement integrated cassette shoe assemblies 11b attached to a rectangular support frame 70 fixed on a base 51 on a plurality of shared processing units 50a, 50b, and A magazine position replacement position (FIG. 4 (a)) and a mounting position for mounting one of the plurality of integrated cassette shoe assemblies 11b for replacement of the magazine section 57 on the head of either of the shared processing units 50a and 50b (same ( b)).

  In operation, from the position of the shared processing units 50a and 50b shown in FIGS. 1 and 2 in which the integrated cassette shoe assembly 11a is mounted with the arms 15 and 15 supporting the shoe assemblies 2 and 2 open. In the direction Z approaching the workpiece 72, the shared machining units 50a and 50b are moved by the motor 66 on the Z-axis slide 64 of the table 63 (FIG. 2) to advance to a position where the workpiece surface 3 is grasped. Next, the arms 15 and 15 are closed, and the shoe assemblies 2 and 2 contact and press the abrasive-coated surface of the tape 5 against the workpiece surface 3, and in this state, the headstock 54 rotates the workpiece 72. The surface 3 of the workpiece, which is the eccentric shaft pin or journal of the crankshaft, rotates and revolves, and the eccentric shaft pin or journal is microfinished. When the processing is completed, the arms 15 and 15 are opened, and the shared processing units 50a and 50b are returned to their original positions. At the same time, the tape 5 is only processed once in the integrated cassette shoe assembly 11a. Is unwound from the tape supply holder 6 and the tape take-up holder 7 for the length of. If necessary, when replacing with the replacement integrated cassette shoe assembly 11b, the magazine unit 11c, 11c that does not hold the replacement integrated cassette shoe assembly 11b is moved to the integrated cassette shoe assembly in the mounting position. Remove the solid 11a, pull up and hold it to the magazine replacement position, and the removed shared processing unit 50a, 50b moves in the axial direction X of the workpiece surface 3 to position the desired integrated cassette shoe assembly 11b for replacement When the moving device 13 is mounted at the mounting position of the common processing unit head, it is automatically replaced and proceeds to the next processing.

  As shown in FIG. 1, in the tape wrapping apparatus with ATC according to the embodiment of the present invention, the magazine portion 57 is placed on a rectangular support frame 70 and a plurality of replacement integrated cassette shoe assemblies 11 are placed in the magazine portion replacement position ( 1 to the integrated cassette shoe assembly replacement position (FIG. 1 dotted line 57 ′, FIG. 4 (b)), which has been used from FIG. 1 solid line 57, FIG. 4 (a)), manually with the shaft 58 as a fulcrum. ° It is designed to swivel to the used integrated cassette shoe assembly replacement position 57 '. End-of-use integrated cassette shoe assembly replacement position 57 'contains all-wound tape 5 that has been completely wound up and no longer has a new abrasive coating, or shoe assembly 2 that has worn and needs replacement The used integrated cassette shoe assembly 11b is manually replaced with a new one by the operator.

  As shown in FIG. 5, the integrated cassette shoe assembly 11 according to the embodiment of the present invention includes the clamp shaft 45 for the arm opening / closing device 46, the opening 24 for the clamp shaft, and the integrated cassette shoe assembly 11 as a common processing unit 50a. , 50b have rear guide portions 14, 14 to be attached to the integrated cassette shoe assembly mounting surface 12 of the head 50, and automatic replacement positioning rear holes 28, 29 (there may be one). As shown in FIG. 6, the integrated cassette shoe assembly mounting surface 12 of the common processing units 50a and 50b heads 50 is fitted to the clamp shaft 45 protruding from the opening 24 by means of 25 and 36. The rear guide portions 14 and 14 have housing mounting grooves 41 and 41 and positioning pins 38 and 39 (one may be inserted) that can be inserted into the automatic replacement positioning rear holes 28 and 29 by being urged by a spring (not shown). 4 is an insert stone formed of a honing grindstone material forming the concave surface 17, and 20 is a cassette body that houses the arm opening / closing device 46, the tape supply holder 6 and the tape take-up holder 7.

  As shown in FIGS. 6 and 7, in the embodiment of the present invention, when the clamp shaft 45 for the arm opening / closing device is pushed by the drive shaft 35 of the common processing unit 50a, 50b head 50, the clamp cam 37 is paired. The bases 47 and 47 of the arms 15 and 15 are pushed to close the pair of arms 15 and 15 by rotating around the shaft 14. Reference numeral 19 denotes a cover of the cassette body 20 that houses the arm opening / closing device 46, the tape supply holder 6, and the tape take-up holder 7. Further, as shown in FIG. 8A, when the clamp shaft 45 is released from the engagement 25, 36 with the drive shaft 35, the first link 27 pushed by the spring 26 has the support shaft 100 as a fulcrum. The connecting pin 31 fixed to the clamp shaft 45 is pushed to advance to the position 27 ', the clamp cam 37, the clamp shaft 45 and the clamp cam 37 are pulled outward, and the pair of arms 15 and 15 are opened. As shown in FIGS. 5 and 6, the fittings 25 and 36 are semi-annular circular portions, and there are grooves 25 ′ and 36 ′ on the inside. When the integrated cassette shoe assembly 11 is attached, the fittings 25 and 36 are fitted and clamped. The shaft 45 and the drive shaft 35 are connected. Further, as shown in FIG. 8A, the unwinding roller portion G includes a connecting pin 31 fixed to the clamp shaft 45 when the clamp shaft 45 is pushed by the drive shaft 35 to close the pair of arms 15 and 15. The tape 5 having a predetermined length for one use is unwound from the tape supply holder 6 of the integrated cassette shoe assembly 11 via the second link device 30 and 40 (FIG. 8B) and the one-way clutch 94. At the same time, the take-up holder driving unit 90 has the connecting pin 31 connected to the tape take-up holder 7 of the integrated cassette shoe assembly 11 via the third link devices 30 and 70 and the one-way clutch 94. The tape 5 is wound up. Furthermore, in the embodiment of the present invention, as shown in FIGS. 4 and 5, the integrated cassette shoe assembly 11 has an upper guide portion 16, and the upper guide portion 16 is moved by the moving device 13 as shown in FIG. And is held and transported by the upper guide unit 16 from the standby position of FIG. 4A to the mounting position of the common processing units 50a, 50b head 50 of FIG. 4B by the moving device 13. The

  In operation, the integrated cassette shoe assembly 11b at the magazine portion replacement position (a) of the magazine portion 57 shown in FIG. 4 is attached to the integrated cassette shoe assembly mounting surface 12 of the common processing unit 50a, 50b head 50. When attaching to the position (b), the back guide portions 14 and 14 of the integrated cassette shoe assembly 11 are inserted into the back guide portion 14 accommodation mounting grooves 41 and 41 of the integrated cassette shoe assembly mounting surface 12 of the machine body 50. Inserted and lowered. Next, positioning pins 38 and 39 urged by a spring (not shown) of the machine body 50 are inserted into the automatic replacement positioning rear holes 28 and 29 of the integrated cassette shoe assembly 11, and at the same time, the integrated cassette shoe assembly 11 The clamp shaft 45 projecting from the opening 24 and the drive shaft 35 of the machine main body 50 are fitted and connected to each other by 25 and 36, and are integrated into the mounting position (b) of the common processing units 50a and 50b head 50. The shoe assembly 11a is attached.

  With this configuration, the tape wrapping device with ATC according to the embodiment of the present invention is mounted on the base so that the integrated cassette shoe assembly is attached and movable in the axial direction of the workpiece and in the direction approaching the workpiece. Since it has a plurality of supported shared processing units and an ATC device that can automatically replace the integrated cassette shoe assembly, different types of workpieces such as crankshafts having different workpiece shaft diameters or shaft widths can be used. The tape wrapping device with ATC can be processed automatically by replacing only the tape holder integrated cassette shoe assembly with the common processing unit, and can be processed flexibly without processing with a separate film wrapping device. Became to provide.

In the schematic plan view of the tape wrapping apparatus with ATC of the embodiment of the present invention, the dotted line indicates the position where the magazine unit has been turned to the integrated cassette shoe assembly replacement position, and the two shared processing units 50a, 50b is mounted with integral cassette shoe assemblies 11a and 11a, respectively, and magazine portions 11c and 11c thereon do not hold replacement integrated cassette shoe assemblies 11b. 1 is a side view of the A side as viewed from the direction A in FIG. 1, and a dotted line shows a state in which the magazine unit is turned to an integrated cassette shoe assembly replacement position when the magazine unit has been used. This is indicated by the exchange position 11b and the attachment position 11a attached to the head of the shared machining unit. FIG. 1 is a front view as viewed from the direction B in FIG. 1. The magazine unit holds a plurality of replacement integrated cassette shoe assemblies on the rectangular support frame at the magazine unit replacement position. The common processing unit is equipped with the integrated cassette shoe assemblies 11a and 11a, respectively, to process the workpiece. (A) shows a state in which the integrated cassette shoe assembly is at the magazine portion replacement position by the automatic tool changer, and (b) shows a state in which the integrated cassette shoe assembly in the state (a) is a shared processing unit depending on the moving device. The state attached to the head is shown. 1 is a schematic perspective view of an integrated cassette shoe assembly according to an embodiment of the present invention, in which a pair of opening and closing arms, an arm opening and closing device, a tape supply holder, and a tape take-up holder that support the shoe assembly are integrally replaceable cassettes The assembled cassette shoe assembly is shown removed from the common processing unit head and the arm is open. FIG. 6 is a partial perspective view of a main part of a common processing unit head to which the integrated cassette shoe assembly of FIG. 5 is attached. The integrated cassette shoe assembly of FIG. 5 is attached to the common processing unit head of FIG. 6 and the arm is closed. 7A is a rear elevational view showing the tape supply holder and the tape take-up holder driving device on the back side of the integrated cassette shoe assembly showing the state in which the arm of FIG. 7 is closed, and the cover 19 of FIG. 7 is removed. (B) is an enlarged view of the unwinding roller portion G of (a), and (c) is an unwinding roller unwinding position where the link 40 of (b) is moved by a two-dot chain line.

Explanation of symbols

2: Shoe assembly 3: Workpiece surface 5: Abrasive coating tape 6: Tape supply holder 7: Tape take-up holder
11: Integrated cassette shoe assembly 13: Moving device 15: Open / close arm
17: Relatively rigid concave surface 45: Clamp shaft 46: Arm opening / closing device
50: Common machining unit head 50a, 50b: Common machining unit 51: Base
52: Tailstock 54: Headstock 57: Magazine section
70: Square support frame 72: Work piece 130: ATC device

Claims (4)

A base on which a headstock and a tailstock for supporting a workpiece of a shaft including a crankshaft are disposed, a relatively incompressible abrasive-coated tape for finishing the workpiece shaft, and Opening / closing arm for supporting a shoe assembly having a pair of relatively rigid concave surfaces for contacting and pressing an abrasive covering surface of a tape against a workpiece surface of a shaft such as a crankshaft, an arm opening / closing device, a tape supply holder, and a tape A tape holder integrated cassette shoe assembly in which the winding holder is assembled as an integrally replaceable cassette;
A plurality of shared processing units mounted on the base so that the integrated cassette shoe assembly is mounted and movable in the axial direction of the workpiece and in the direction of approaching the workpiece;
An ATC device capable of automatically exchanging the integrated cassette shoe assembly,
The ATC apparatus includes a magazine unit for holding a plurality of replacement integrated cassette shoe assemblies attached to a rectangular support frame fixed on the base on the plurality of shared processing units, and the magazine unit. A tape wrapping apparatus with an ATC, comprising: a moving device between a magazine part replacement position and a mounting position for mounting one of the plurality of integrated cassette shoe assemblies for replacement at either of the magazine processing unit.   The magazine portion can be rotated about 90 ° on the rectangular support frame from the magazine portion replacement position to the replacement position of the integrated cassette shoe assembly after use of the plurality of replacement integrated cassette shoe assemblies. The tape wrap apparatus with ATC according to claim 1, wherein   The integrated cassette shoe assembly includes an arm opening / closing device clamp shaft, an opening for the clamp shaft, a back guide portion for attaching the integrated cassette shoe assembly to the common processing unit head mounting surface, and an automatic replacement positioning back surface. An integrated cassette shoe assembly mounting surface of the common processing unit head having a hole is urged by a drive shaft that fits into the clamp shaft protruding from the opening, the back guide portion receiving mounting groove, and a spring The tape wrapping apparatus with ATC according to claim 1 or 2, further comprising a positioning pin that can be inserted into the positioning rear hole for automatic replacement. When the clamp shaft is pushed by the drive shaft, the clamp cam pushes the bases of the pair of arms to rotate around the shaft and close the arms. When pushed by the shaft, the pair of arms are closed, and when the clamp shaft is disengaged from the drive shaft, the first link pushed by the spring moves to the clamp shaft with the support shaft as a fulcrum. The pair of arms are opened by pulling the fixed connecting pin, and when the clamp shaft is pushed by the drive shaft and the pair of arms is closed, the connecting pin fixed to the clamp shaft is the second link. The tape of a predetermined length is unwound from the tape supply holder of the cassette shoe assembly via the apparatus and the one-way clutch, and at the same time, the connecting pin passes through the third link and the one-way clutch. ATC with tape wrap system as claimed in claim 3, wherein it has to take up the said tape of said predetermined length on the tape winding holder of the cassette shoe assemblies Te.

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