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WO1996007505A1 - Appareil pour positionner un element sur une surface - Google Patents

Appareil pour positionner un element sur une surface Download PDF

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Publication number
WO1996007505A1
WO1996007505A1 PCT/US1995/011132 US9511132W WO9607505A1 WO 1996007505 A1 WO1996007505 A1 WO 1996007505A1 US 9511132 W US9511132 W US 9511132W WO 9607505 A1 WO9607505 A1 WO 9607505A1
Authority
WO
WIPO (PCT)
Prior art keywords
bore
locating
receiving bore
receiving
reference axis
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/US1995/011132
Other languages
English (en)
Inventor
George R. Swann
Eric R. Moore
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.)
Chick Machine Tool Inc
Original Assignee
Chick Machine Tool Inc
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
Application filed by Chick Machine Tool Inc filed Critical Chick Machine Tool Inc
Priority to AU35436/95A priority Critical patent/AU3543695A/en
Publication of WO1996007505A1 publication Critical patent/WO1996007505A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/10—Auxiliary devices, e.g. bolsters, extension members
    • B23Q3/103—Constructional elements used for constructing work holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/18—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for positioning only
    • B23Q3/183—Centering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2405—Construction of the jaws
    • B25B1/2478—Construction of the jaws with more than one pair of jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2484—Supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B1/00—Vices
    • B25B1/24—Details, e.g. jaws of special shape, slideways
    • B25B1/2489—Slideways

Definitions

  • the present invention relates to workholding apparatuses and, more particularly, is directed to apparatus for positioning a stationary clamping element on a precision vise-like workholder.
  • FIGS. 1 and 2 illustrate a known method for positioning a member 212 on an object 214 having a planar surface 216.
  • two spaced-apart, round pins 218 are attached to the member 212 such that they extend therefrom to be received in corresponding round holes 220 provided in the object 214.
  • the distance "X" between the centers of the pins 218 and the distance "Y” between the centers of the holes 220 must be precisely controlled so that those distances are substantially equal.
  • precision machining is costly and time consuming.
  • the holes 220 are typically fabricated with larger diameters than the outside diameters of the pins 218.
  • that action can lead to positioning inaccuracies depending upon the magnitude of the clearance provided between the pins 218 and their corresponding holes 220.
  • separate threaded bore(s) are typically provided in the object 214 that are adapted to receive corresponding capscrew(s) (not shown) that extend through bores (not shown) provided in the member 212.
  • Such fastening arrangement requires the tolerances between the threaded capscrew and the threaded bore to be larger than the tolerances between the pins 218 and the bores 220 to ensure that the positioning of the member 212 relative to the object is solely controlled by the pin and bore arrangement .
  • FIGS. 3 and 4 Another known positioning method for positioning an object 312 on a member 314 having a planar surface 316 is illustrated in FIGS. 3 and 4.
  • two round holes 320 are provided in the object 314.
  • a round pin 318 and a "diamond" shaped pin 322 are attached to the object 312 such that they extend therefrom.
  • Such diamond shaped pins 322 typically have their lower end portions configured to a so-called diamond shape by machining the cylindrical surface of the pin on opposite sides, leaving only small arcs spaced on opposite sides on the pin at the original diameter of the pin.
  • 4,585,217 to Erickson teaches the use of differently shaped pins for aligning a tooling block adapted to support one or more workpieces thereon on a planar base plate that is attached to a rotary table of a computer numerically controlled machining device.
  • Two of the pins that are used each have a dome-shaped upper portion and a cylindrical lower stem that is adapted to be received in a corresponding bore in the base plate.
  • the tooling block has at least two alignment bores that are adapted to receive the upper dome-shaped portions of those pins therein to facilitate initial alignment of the block on the base plate.
  • Another pin having a lower cylindrical stem portion adapted to be received in a corresponding bore in the base plate and an upper portion having a frusto-conical shape adapted to be received in a corresponding bore provided in the block is also used to facilitate alignment of the block on the plate.
  • another pin that also has a cylindrical lower stem portion adapted to be received in corresponding bore in the plate and a diamond-shaped upper portion adapted to be received in a corresponding bore in the block is used. That collection of pins is used to precisely locate the tooling block on the base plate.
  • One or more of the pins may be provided with a "diamond" cross- sectional shape.
  • Both of the locating pin arrangements disclosed in the patents mentioned immediately above have inherent inaccuracy problems.
  • the locating pins each have cylindrical "stem" portions that, in one case, serve to locate the pins in a base member and, in the other case, serve to locate the pins in an adaptor member that is attached to a base plate.
  • the degree of positioning accuracy of one member i.e., a tooling block or a workpiece
  • the other member i.e., a base plate or an adaptor attached to a base plate
  • Every machining process has a certain amount of inaccuracy associated with it due to, perhaps, limitations of the apparatus used to machine the bore, wear of that apparatus' components or the particular machining method employed.
  • each bore will have a range of diameters (i.e., a tolerance) that could result from that particular machining apparatus or process, each of which would be deemed acceptable, in view of the inherent inaccuracies associated with that apparatus and/or process.
  • Similar inaccuracies are also encountered when machining the cylindrical lower stems of the locating pins.
  • the accuracy of the pin relative to the first member in which its lower cylindrical stem portion is received will depend upon the accuracy of the pin and the accuracy of the bore into which it is inserted.
  • U.S. Patent No. 4,968,012 to Haddad et al. discloses a modular workpiece holding apparatus for holding a workpiece in a predetermined position.
  • the apparatus includes a base plate that has a plurality of bores therein that each have a lower threaded portion.
  • the apparatus also includes a plurality of support members that each have a mounting base with four bores formed therein.
  • a bushing is secured in each bore in the mounting base such that a portion of each bushing protrudes from its bottom surface.
  • Two bushings that each have a circular exterior portion that protrude from the bottom of the mounting base and two bushings that each have a diamond-shaped exterior portion that protrudes from the mounting base are used to position the mounting base relative to the base plate by inserting the protruding bushings into bores provided in the base plate.
  • the support member is secured to the base plate by threaded fasteners that extend through the bushings to threadedly engage the threaded portion of the bores in the base plate.
  • an apparatus for attaching a member onto a planar surface of an object within a predetermined degree of accuracy relative to a reference axis on the planar surface comprises a first receiving bore provided in the planar surface of the object.
  • the first receiving bore has a first central axis that extends substantially perpendicularly through the reference axis.
  • a second receiving bore is also provided in the planar surface of the object.
  • the second receiving bore has a second central axis spaced from the first central axis a first predetermined distance on the reference axis and it extends substantially perpendicularly through the reference axis.
  • a first locating protrusion is formed in a mating surface of the member such that it extends therefrom.
  • the first locating protrusion has a substantially round cross-sectional shape that is sized for insertion into the first receiving bore and also has a first axial bore that extends therethrough.
  • a second locating protrusion is formed in the mating surface of the member and has a second axial center that is spaced a second predetermined distance from the first axial center of the first locating protrusion such that the first and second locating protrusions may be simultaneously inserted into the first and second receiving bores, respectively.
  • the second locating protrusion also has a second axial bore extending therethrough and a non-circular cross-sectional shape configured for insertion into the second receiving bore such that the first and second predetermined distances can vary a predetermined amount while maintaining the ability to simultaneously insert the first and second locating protrusions in the first and second receiving bores, respectively, while also maintaining the degree of positioning accuracy of the object relative to the reference axis on the planar surface.
  • Fastening members are inserted into the first and second axial bores to fasten the object to the member when the first and second locating protrusions are simultaneously received in the first and second receiving bores, respectively.
  • FIG. 1 is an exploded assembly view of a prior method for positioning a member on the planar surface of an object
  • FIG. 2 is a bottom view of the assembly of FIG. 1;
  • FIG. 3 is an exploded view of another prior method for positioning a member on a planar surface of an object
  • FIG. 4 is a bottom view of the assembly of FIG. 3 ;
  • FIG. 5 is cross-sectional assembly view of a member attached to an object using the apparatus of the present invention
  • FIG. 6 is a bottom view of the member depicted in FIG. 5;
  • FIG. 7 is a side elevational view of the object depicted in FIG. 5;
  • FIG. 8 is a plan view of the object depicted in FIGS. 5 and 7;
  • FIG. 9 is a plan view of a precision vise-like workholding device with which the present invention may be used;
  • FIG. 10 is side elevational view of the workholding device of FIG. 9;
  • FIG. 11 is an end elevational view of the base member of the workholding device depicted in FIGS. 9 and 10;
  • FIG. 12 is a partial plan view of the base of FIG.
  • FIG. 13 is an elevational view of the center jaw of the workholding device depicted in FIGS. 9 and 10;
  • FIG. 14 is a bottom view of the center jaw of FIG. 13.
  • FIG. 15 is a cross-sectional assembly view of the vise-like workholder depicted in FIGS. 9 and 10 with some of the elements thereof depicted in full view to better illustrate the apparatus of the present invention.
  • FIGS. 5 and 6 illustrate a preferred embodiment of the present invention for precisely positioning a member 10 on a surface 42 of an object 40.
  • member 10 may consist of any solid article such as, for example, a stationary clamping member that is adapted to be precisely positioned on a planar surface like a portion of a machine tool or workholding member.
  • the member 10 has a mating surface 12 that is adapted to be received on the planar surface 42 of the object 40.
  • a first bore 16 is provided through the member 10 in a known location such that it is substantially coaxially aligned with the first protrusion 16 along axis "A-A" and extends therethrough in the manner illustrated in FIG. 5.
  • a "first" predetermined distance (generally designated as distance “B") along a common longitudinal axis "C-C" on the mating surface 12 is a second "diamond-shaped" protrusion 20 that has an axis "D-D” that is substantially parallel to axis "A-A” of protrusion 14.
  • arcuate surfaces (22, 24) each preferably about 20 degrees in length, and in no event greater than 179 degrees in length, are preferably formed diametrically opposite each other as shown in FIG. 6.
  • Interconnected non- arcuate surfaces (26, 27, 28, 29, 30, 31), each being closer to axis "D-D" than the arcuate surfaces (22, 24) are preferably provided intermediate the arcuate surfaces (22, 24) as shown in FIG. 6.
  • the skilled artisan will appreciate, however, that other non- arcuate or arcuate intermediate surface arrangements may also be successfully used depending upon the lengths of arcuate surfaces (22, 24) .
  • a "first" receiving bore 44 having a “first” axis “E-E” is provided in the object 40 such that axis “E-E” extends substantially perpendicularly through a longitudinal reference axis "F-F” provided on the planar surface 42 of the object 40. See FIGS. 7 and 8.
  • a “second” receiving bore 46 that has an axis “G-G” is provided in object 40 a second predetermined distance “H” along the reference axis "F-F” from the first receiving bore 44.
  • axes "E- E” and “G-G” are preferably substantially parallel to each other and they are preferably substantially perpendicular to axis "F-F” .
  • the member 10 is so positioned such that the mating surface 12 is brought into confronting relationship with the planar surface 42 of the object to thereby enable the first protrusion 14 and the second protrusion 20 to be simultaneously inserted into the first receiving bore 44 and the second receiving bore 46, respectively.
  • the first receiving bore 44 is provided with a "first" threaded portion 45 and the second receiving bore 46 is provided with a “second” threaded portion 47.
  • a "first" fastening member, preferably a capscrew 48, is inserted through first axial bore 16 to be threadedly engaged with the first threaded portion 45.
  • a second fastening member preferably a capscrew 49
  • a capscrew 49 is inserted through a second axial bore 21 that extends through the member 10 and the protrusion 20 to be threadedly engaged with the second threaded portion 47 of second receiving bore 46.
  • suitable fasteners such as, for example, bolts, pins, etc. may also be used.
  • the positioning accuracy of the member 10 relative to the object 40 is dependent upon the position of the protrusions (14, 20) on the member 10 and the positions of the first and second receiving bores (44, 46) in the object 40. More specifically, the location of protrusion 14 and the location of the first receiving bore 44 establish the location of member 10 relative to the reference axis "F-F" on the object 40.
  • each of those elements i.e., the protrusion 14 and the first receiving bore 44
  • have a tolerance the magnitude of which may be dictated by such factors as (i) the ultimate acceptable degree of positioning accuracy required between the member 10 and the object 40 and (ii) the accuracy limitations and costs associated with machining those elements to the tolerances necessary to achieve such positioning accuracy.
  • the positions of protrusion 20 and the corresponding second receiving bore 46 relative to protrusion 14 and the first receiving bore 44 serve to define the degree of rotational accuracy that member 10 will have about axis "E-E". See FIG. 7. It has been found, however, that when the second protrusion 20 is so angularly arranged on the mating surface 13 of the member 10 such that a line “I-I” connecting the centers of the arcuate surfaces (22, 24) is perpendicular to the reference axis "F-F" when the protrusions (14, 20) are received in bores (44, 46), respectively, the distances "B” and “H” can vary up to about four times the amount such distances could normally vary if protrusion 20 had a circular cross-sectional shape.
  • the present positioning method is well adapted for positioning and affixing a stationary clamping member onto the base member of a workholding apparatus.
  • the present invention may be used in connection with a vise-like workholding device, generally designated as 50, that is adapted to securely restrain a first workpiece 52 and a second workpiece 54 during various machining operations.
  • the basic structure of the workholding device 50 is similar to the workholding apparatus described in U.S. Patent No. 5,022,636, issued June 11, 1991, entitled “Workholding Apparatus", the disclosure of which is herein incorporated by reference. As such, in the present Detailed Description Of The Preferred Embodiments, the basic structure of the workholder 50 will be described in general terms, it being understood that the particular details of the workholder 50 construction, with the exception of those features which are described hereinbelow forming this embodiment of the present invention, may be gleaned from a review of that patent.
  • the vise-like workholding device 50 generally comprises a base member 56 which is an elongated metallic structure typically fabricated from a high strength aluminum material. As most particularly shown in FIG. 11, a cavity 57 is machined along the longitudinal axis of the base member 56 and defines a slot 58 having two longitudinally extending side rail members 59.
  • a clamping assembly, generally designated as 60 is provided for movement within the cavity 57 and slot 58.
  • the clamping assembly 60 includes first and second slide members (62, 64) which are slidably received within the slot 58.
  • a workholding jaw portion 65 is preferably attached to the first slide member 62 and a second workholding jaw portion 67 is preferably attached to the second slide member 64.
  • the workholding jaw portions 65 and 67 may be similar to those workholding jaw portions disclosed in U.S. Patent No. 5,025,427 entitled “Quick Change Head For Precision Machine Vise” the disclosure of which is herein incorporated by reference.
  • the clamping assembly 60 also includes a screw shaft 66 that is received within the slot 58 in the base member 56.
  • the screw shaft 66 is operably attached to the first and second slide members (62, 64) such that rotational movement of the screw shaft 66 causes the first and second slide members (62, 64) to be selectively moved along slot 58.
  • a central fixed jaw member 70 is also adapted to be attached to the base 56 between the jaw portions 65 and 67 such that the movable slide members 62 and 64 may move toward and away from the central fixed jaw member 70 to clamp workpieces 52 and 54 therebetween.
  • the first movable slide member 62 is moved relative thereto, thereby causing the first workholding jaw portion 65 to move toward the central jaw member 70 to withhold a first part 52 therebetween.
  • the rotation of the screw shaft 66 and its movement relative to the first movable slide member 62 causes the second movable slide member 64 to move the second workholding jaw portion 67 toward the fixed central jaw member 70 to engage and restrain a second part 54 therebetween. Because the central jaw member 70 must be accurately positioned and attached to the side rail members 59, the positioning apparatus of the present invention is well-suited to accomplish that task while permitting the central fixed jaw member 70 to be easily removed from the base 56 should it become worn or damaged.
  • the central fixed jaw member 70 has a mating surface 72 that is adapted to be received on the rail portions 59 of the base 56.
  • a first protrusion 74 preferably having the cross-sectional shape depicted in FIG. 14, is formed in the mating surface 72 such that it protrudes or extends therefrom.
  • protrusion 74 is preferably provided with four, spaced-apart contact arcs 75 using the fabricating methods described hereinbelow.
  • a first bore 76 is provided through the center jaw 70 at a known location such that it is substantially coaxially aligned with the first protrusion 74 along axis "A' -A' " and extends therethrough in the manner illustrated in FIG. 13.
  • a first counterbore 77 and a second counterbore 77' are preferably provided in the center jaw 70 such that they are also coaxially aligned with bore 76 on axis "A' -A' " .
  • a "first" predetermined distance (generally designated as distance “B') along a common axis "C - C " on the mating surface 72 from protrusion 74 is a second protrusion 80 that has an axis "D' -D' " that is substantially parallel to axis "A' -A' " of protrusion 74.
  • arcuate surfaces (82, 84) each preferably about 20 degrees in length, and in no event greater than 179 degrees in length, are formed diametrically opposite each other as shown in FIG. 14.
  • Interconnected non-arcuate or arcuate surfaces (86, 87, 88, 89, 90, 91) , each being closer to axis "D' -D' " than the arcuate surfaces (82, 84) , are preferably provided intermediate the arcuate surfaces (82, 84) as shown in FIG. 14.
  • a first bore 83 is provided through the center jaw 70 such that it is substantially coaxially aligned with the second protrusion 80 along axis "D' -D' " and extends therethrough in the manner illustrated in FIG. 13.
  • a first counterbore 85 and a second counterbore 85' are preferably provided in the center jaw 70 such that they are also coaxially aligned with bore 83 on axis "D' -D' " .
  • protrusions (74, 80) can be advantageously machined into the center jaw 70 as follows. Two protrusions as described above, one round in cross-section and one with only two small arcuate surfaces, corresponding to the protrusions (74, 80) are first machined into the jaw member 70 in their predetermined locations using conventional machining techniques. The outer diameters of these round protrusions may be as much as approximately 0.004" larger than the ultimate desired diameter for each protrusion (74, 80).
  • a die plate fabricated from material that is harder than the jaw member 70 material and having two round apertures that will provide the final desired sizes and center distances for the protrusions (74, 78) is pressed onto the protrusions to "shave" off excess material therefrom and ultimately achieve the desired protrusion size and spacing.
  • a preferred protrusion diameter accuracy of approximately ⁇ 0.0001 it has been found that it is desirable to press the die plate onto the round protrusions at least three successive times.
  • Such manufacturing method is relatively inexpensive when compared to other conventional machining methods capable of achieving similar accuracies.
  • a "first" threaded receiving bore 90 having a “first” axis “E'-E' M , is provided in one rail 59 of base 56 such that axis "E'-E'” preferably extends substantially perpendicularly through a reference axis "F'-F'” provided on the base 56. See FIGS. 11 and 12.
  • a "second” receiving bore 94 that has an axis "G'-G'” is provided in the base 56 a second predetermined distance "H' " along the reference axis » F'-F'".
  • axes "E'-E'" and “G' -G' " are preferably substantially parallel to each other and they are preferably substantially perpendicular to axis » F'-F'".
  • a counterbore 91 is coaxially aligned with bore 90 along axis "E'-E'" and is adapted to receive a hollow bushing 92 therein.
  • a counterbore 95 is coaxially aligned with bore 94 along axis "G'-G'” and is adapted to receive hollow bushing 97 therein.
  • the bushings (92, 97) are preferably fabricated from hardened steel and are preferably retained within the corresponding counterbores (91, 95) by virtue of an interference fit created between the outer diameter of each bushing and the corresponding counterbore (91, 95) .
  • bushings (92, 97) may be fabricated from a variety of other suitable materials and may be attached to the side rails 59 by any suitable fastening means, or bores without brushings could be provided in the side rails.
  • the center jaw 70 is so positioned such that the mating surface 72 thereof is brought into confronting relationship with the rails 59 of base 56 to enable the first protrusion 74 and the second protrusion 80 to be simultaneously inserted into bushings (92, 97), respectively.
  • capscrews 100 are preferably inserted through bores (77, 77') and bores (85, 85') and bushings (92, 97) to threadedly engage threaded bores (90, 94) . See FIG. 15. Also, to prevent chips and debris from collecting in counterbores (77, 85) , resilient bore plugs 100 are preferably removably inserted into counterbores (77, 85' ) .
  • the present invention is well-suited for positioning and fastening a jaw member to the base of a vise-like workholding apparatus.
  • the present invention enables the jaw member to be removed and replaced should it become damaged or worn.
  • the protrusions of the present invention are machined onto the removable jaw member preferably by the fabricating method described hereinabove.
  • the present invention serves to provide a more economical method to accurately removably attach the jaw member to the base of a vise- like workholding apparatus.
  • numerous other jaw members of various sizes and shapes can be economically manufactured and stored for a variety of other workholding applications.
  • the present invention provides solutions to the aforementioned problems associated with precisely positioning a member on the planar surface of an object and, in particular, to the positioning problems commonly associated with workholding vises and similar apparatuses. It will be understood, however, that various changes in the details, materials and arrangements of parts which have been herein described and illustrated in order to explain the nature of the invention may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

L'invention concerne un appareil pour fixer un élément (10) sur une surface plane (42) d'un objet (40) avec une précision de positionnement prédéterminée par rapport à un axe de référence sur la surface plane (42). L'appareil comprend des premier et second alésages (44, 46) dans l'objet (40) qui sont séparés par une distance prédéterminée sur un axe de référence, pour que leurs centres respectifs soient orientés sensiblement perpendiculairement à cet axe de référence. Des première et seconde saillies creuses (14, 20) sont formées sur une surface de forme correspondante (12) de l'élément et elles sont espacées sur la surface de forme correspondante (12) d'une seconde distance prédéterminée en étant formées de manière à ce que la seconde distance prédéterminée puisse varier d'une valeur prédéterminée par rapport à la première distance prédéterminée sans influer sur la capacité d'insérer simultanément les première et seconde saillies (14, 20) respectivement dans les premier et second alésages (44, 46), tout en maintenant le degré de précision du positionnement de l'élément (10) par rapport à l'axe de référence sur la surface plane (42) de l'objet (40).
PCT/US1995/011132 1994-09-02 1995-09-01 Appareil pour positionner un element sur une surface Ceased WO1996007505A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35436/95A AU3543695A (en) 1994-09-02 1995-09-01 Apparatus for positioning an element on a surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30037594A 1994-09-02 1994-09-02
US08/300,375 1994-09-02

Publications (1)

Publication Number Publication Date
WO1996007505A1 true WO1996007505A1 (fr) 1996-03-14

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PCT/US1995/011132 Ceased WO1996007505A1 (fr) 1994-09-02 1995-09-01 Appareil pour positionner un element sur une surface

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WO (1) WO1996007505A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035882A1 (fr) * 1995-05-08 1996-11-14 Chick Machine Tool, Inc. Appareil facilitant le detachement d'un element fixe sur un objet
EP0873816A3 (fr) * 1997-04-22 1999-03-31 Stark, Emil, jr. Cylindre pour positionnement et serrage rapide
TWI807901B (zh) * 2022-07-04 2023-07-01 固地威企業股份有限公司 一個虎鉗本體能替換三種夾持模式的多功能虎鉗

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381554A (en) * 1967-06-30 1968-05-07 Mcdonnell Aircraft Corp Bushings for locating two adjaent parts
US4496165A (en) * 1983-01-18 1985-01-29 The Board Of Trustees Of The University Of Illinois Adjustable collet
WO1990008622A1 (fr) * 1989-01-24 1990-08-09 Flexx Automation Systems, Inc. Systeme de fixation modulaire
DE9001903U1 (de) * 1990-02-17 1990-08-23 Meusburger Georg Ges.mbh, Wolfurt Spannvorrichtung zum reproduzierbar lagegenauen Festspannen von Formplatten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381554A (en) * 1967-06-30 1968-05-07 Mcdonnell Aircraft Corp Bushings for locating two adjaent parts
US4496165A (en) * 1983-01-18 1985-01-29 The Board Of Trustees Of The University Of Illinois Adjustable collet
WO1990008622A1 (fr) * 1989-01-24 1990-08-09 Flexx Automation Systems, Inc. Systeme de fixation modulaire
DE9001903U1 (de) * 1990-02-17 1990-08-23 Meusburger Georg Ges.mbh, Wolfurt Spannvorrichtung zum reproduzierbar lagegenauen Festspannen von Formplatten

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996035882A1 (fr) * 1995-05-08 1996-11-14 Chick Machine Tool, Inc. Appareil facilitant le detachement d'un element fixe sur un objet
EP0873816A3 (fr) * 1997-04-22 1999-03-31 Stark, Emil, jr. Cylindre pour positionnement et serrage rapide
TWI807901B (zh) * 2022-07-04 2023-07-01 固地威企業股份有限公司 一個虎鉗本體能替換三種夾持模式的多功能虎鉗

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