US20010028138A1 - Free-floating hydraulic clamping device with edge-gripping arbor - Google Patents
Free-floating hydraulic clamping device with edge-gripping arbor Download PDFInfo
- Publication number
- US20010028138A1 US20010028138A1 US09/851,061 US85106101A US2001028138A1 US 20010028138 A1 US20010028138 A1 US 20010028138A1 US 85106101 A US85106101 A US 85106101A US 2001028138 A1 US2001028138 A1 US 2001028138A1
- Authority
- US
- United States
- Prior art keywords
- arbor
- work piece
- workholder
- bore
- clamping device
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
- B23Q3/14—Mandrels in general
-
- 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/0063—Connecting non-slidable parts of machine tools to each other
- B23Q1/0081—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole
- B23Q1/009—Connecting non-slidable parts of machine tools to each other using an expanding clamping member insertable in a receiving hole the receiving hole being cylindrical or conical
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/5383—Puller or pusher means, contained force multiplying operator having fluid operator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/53—Means to assemble or disassemble
- Y10T29/53796—Puller or pusher means, contained force multiplying operator
- Y10T29/53848—Puller or pusher means, contained force multiplying operator having screw operator
- Y10T29/53857—Central screw, work-engagers around screw
- Y10T29/53878—Tubular or tube segment forms work-engager
Abstract
The present invention provides a workholder and a method for securing a work piece by engaging either a bore contained in the work piece or by gripping the edge of the bore of the work piece. The workholder includes a support platform, and a bore clamping device that is mounted to the support platform. The clamping device has a cylindrical, expandable arbor extending upwardly from the support platform for positioning in and engaging the bore or for gripping an outer edge of the bore.
Description
- The present invention relates to a workholder for securing a work piece and, more particularly, to an expandable arbor for securing a work piece which engages an outside edge of the internal diameter of the bore in the work piece.
- In conventional manufacturing, work pieces typically are secured to a surface or fixture to allow cutting elements, such as mills, to accurately remove material from the work piece and shape the work piece into a final product. Various support platforms, such as work benches, are suitable to serve as the support platform. The support platform serves to provide a solid base against which the cutting element may apply pressure to the work piece and also provides a foundation for dimensional consistency. To secure the work piece to the support platform, clamping devices are employed which extend from the support platform, around a side of the work piece and apply pressure to an upper surface of the work piece opposite the support platform. As a result, the clamp presses the work piece against the support platform to allow the cutting elements to proceed in machining areas of the work piece which are not obstructed by the clamping element.
- While this clamping method effectively secures the work piece to the support platform, the positioning of the clamps often obstructs the cutting elements access to the work piece and thereby renders machining difficult. As a result, the work piece must be continuously unclamped and reclamped-in different areas to allow access to the previously obstructed areas. This causes increased manufacturing cost and time. The present invention was developed to overcome these concerns.
- It is, therefore, an object of the present invention to provide a workholder which utilizes an expandable arbor to engage bores contained within the work piece, thereby maximizing the amount of access the cutting element has to the work piece.
- It is yet another object of the present invention to provide a workholder which utilizes an expandable arbor to engage bores contained within the work piece, which first clamps the bores and then draws the work piece against a support platform.
- It is still another object of the present invention to provide a workholder which utilizes an expandable arbor to engage bores contained within the work piece, wherein the amount of expansion force generated by the expandable arbor on the bores is variable.
- It is still another object of the present invention to provide a workholder which utilizes an expandable arbor to engage bores contained within the work piece, which allows adjustment for varying hole positioning on the work piece.
- To accomplish these and other objects, the present invention provides a workholder for securing a work piece by engaging at least one bore contained in the work piece and locating on a second bore of the work piece. The workholder includes a support platform, bore clamping device, and a locator assembly. The bore clamping device is mounted to the support platform and has a cylindrical, expandable arbor extending upwardly from the support platform for positioning in and engaging the bore. The locator assembly has a locator pin extending upwardly from the support platform for positioning within and locating the second bore.
- In another aspect of the present inventor, a workholder for securing a work piece by engaging a plurality of bores contained in the work piece which includes a support platform and a plurality of bore clamping devices mounted to the support platform. Each bore clamping device has a cylindrical, expandable arbor extending upward from the support platform for engaging one of the bores.
- Another aspect of the present invention includes an expandable arbor having a cap that spreads out to engage the work piece upper surface prior to a force exerting downward on and clamping the work piece.
- Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are intended for purposes of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
- The present invention will become more fully understood from the detailed description and the accompanying drawings, wherein:
- FIG. 1 is a cross-sectional view of a workholder according to the present invention;
- FIG. 2 is a side view of a cylindrical expandable arbor of a workholder according to the present invention;
- FIG. 3 is a side view of serrated edges of a workholder according to the present invention;
- FIG. 4A is a side view of a wedge of a workholder according to the present invention;
- FIG. 4B is a front view of a wedge of a workholder according to the present invention;
- FIG. 5 is a perspective view of a cylindrical expandable arbor of a workholder according to the present invention;
- FIG. 6 is a cross-sectional view of an elevated support of a workholder according to the present invention;
- FIG. 7 is a sectional view of an elevated support of a workholder along lines7-7 in FIG. 6 according to the present invention;
- FIG. 8A is an operational view of a workholder according to the present invention;
- FIG. 8B is an operational view of a workholder according to the present invention;
- FIG. 8C is an operational view of a workholder according to the present invention;
- FIG. 9 is a operational view of a second embodiment of a workholder according to the present invention;
- FIG. 10 is a cross-sectional view of a workholder according to a third embodiment of the present invention;
- FIG. 11 is a plan view of a work holder according to a fourth embodiment of the present invention;
- FIG. 12 is a plan view of a work holder according to a fifth embodiment of the present invention;
- FIG. 13 is a perspective view of an alternative arbor design;
- FIG. 14 is a cross-sectional view of a clamping device according to a sixth embodiment of the present invention with an arbor having a capped end with serrations for gripping a part;
- FIG. 15 is a cross-sectional view of a clamping device according to the present invention with the serrations engaging the work piece:
- FIG. 16 is a cross-sectional view of a clamping device according to a seventh form of the present invention showing the arbor contracted; and
- FIG. 17 is a cross-sectional view of a clamping device according to the present invention showing the arbor expanded and the work piece secured.
- The following description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
- Referring now to FIG. 1, a
workholder 10 is shown and described.Workholder 10 generally comprisesclamping device 12 mounted to supportplatform 14.Support platform 14 has anupper surface 18 and alower surface 20 which is adjacent to alower cavity 22.Upper surface 18 is preferably machined to specific tolerances (for reasons which will be discussed).Clamping device 12 generally includes a cylindricalexpandable arbor 38, elevatedsupport 40,hydraulic cylinder 42,spring element 44, andwedge 46. - Referring now to FIG. 2, cylindrical
expandable arbor 38 ofclamping device 12 is described in greater detail. Cylindricalexpandable arbor 38 has afirst portion 48 having anouter diameter 50 extending apredetermined length 52 alongfirst portion 48. At atransition point 54,first portion 48 chamfers inwardly tosecond portion 56.Second portion 56 has asecond diameter 58 which extends upwardly alongsecond portion 56 until reachingtip 60.Slit 62 extends upwardly along cylindricalexpandable arbor 38 from afirst end 64 and terminates at a point distally located fromfirst portion 48, preferablytip 60. Around the upper area ofsecond portion 56 is located a series ofserrated edges 66. As shown in FIG. 3,serrated edges 66 generally have slopedupper area 68 and jagged downward surfaces 70. By this way,serrated edges 66 are able to draw traction force in a downward direction with respect to cylindricalexpandable arbor 38. The arbor is preferably made of hardened steel. - Referring now to FIG. 4A and FIG. 4B,
wedge 46 is described in greater detail. As is shown,wedge 46 has a pair ofwings 72 which extend outwardly from acentral body 74. At the upper portion ofcentral body 74,central body 74 chamfers atarea 76 toward apoint 78. - Referring now to FIG. 5, cylindrical
expandable arbor 38 is shown assembled withwedge 46. As shown,wings 72 are positionedproximate end 64 and extend outwardly from both sides of cylindricalexpandable arbor 38.Central body 74 ofwedge 46 extends upwardly inside slit 62 until being proximate narrowedregion 80. - Referring now to FIG. 6,
elevated support 40 is described in greater detail.Elevated support 40 has an uppercylindrical region 82 and anouter rim 84. Both uppercylindrical region 82 andouter rim 84 have a pair of locating surfaces 86.Passage 88 extends throughelevated support 40 downward to apredetermined depth 94.Inner diameter 92 is substantially equal toouter diameter 50 of cylindricalexpandable arbor 38 to provide lateral support of cylindricalexpandable arbor 38.Elevated support 40 further has a pair ofsquare slots 96 which are dimensioned to accommodatewings 72. A lower part ofelevated support 40 is acounterbore 100.Counterbore 100 has a diameter substantially larger thandiameter 92. In FIG. 7, a sectional view of section 7-7 in FIG. 6 is shown. Here,square slots 96 can clearly be seen. Moreover, the extension ofpassage 88 topredetermined depth 94 is also readily understood. - Referring again to FIG. 1, the assembly of clamping
device 12 will now be discussed. Cylindricalexpandable arbor 38 passes throughpassage 88 and is operationally engaged tohydraulic cylinder 42. In its unclamped state, a part offirst portion 48 of cylindricalexpandable arbor 38 is flush against a portion ofinner diameter 92 ofelevated support 40.Counterbore 100,outer diameter 102 ofsupport platform 14 andupper face 104 form the bounds of acavity 106. Withincavity 106 and positioned onspacer 108 isspring element 44. Preferably,spring element 44 is a plurality of stacked belleville washers. Positioned onspring element 44 isspacer 110.Spacer 108 andspacer 110 are dimensioned such that the bottoms ofwings 72 are flush against the upper area ofspacer 110. - Referring now to FIGS. 8A, 8B, and8C, the operation of the present invention will be described. In FIG. 8A,
work piece 112 is shown positioned aroundsecond portion 56 of cylindricalexpandable arbor 38. In operation,hydraulic cylinder 42 draws cylindricalexpandable arbor 38 downward, thereby causingwing 72 to contactspacer 110. As shown in FIG. 8B, this contact begins compressingspring element 44 which exerts a force opposite to that ofhydraulic cylinder 42, thereby causingwedge 46 to move upward towardtip 60 and expandsecond portion 56. This expansion drivesserrated edges 66 intowork piece 112. This expansion results in clamping ofwork piece 112. - It is noted that in the clamped position,
first portion 48 andtransition point 54 are no longer adjacent toinner diameter 92 ofpassage 88. Instead, the smaller diameter in thesecond portion 56 is proximateinner diameter 92. Because of this smaller diameter,cylindrical region 82 is no longer providing support to cylindricalexpandable arbor 38. This allows cylindricalexpandable arbor 38 to flex and accommodate for any variations in the location of bores in thework piece 112. - Referring now to FIG. 8C, continued retraction of cylindrical
expandable arbor 38 byhydraulic cylinder 42 drawswork piece 112 against locatingsurface 86 ofelevated support 40. It is noted that the spring constant ofspring element 44 changes the amount of clamping pressure exerted on the walls ofwork piece 112 beforework piece 112 is brought against locatingsurface 86. As such, if one desires a large amount of clamping force on the walls ofwork piece 112, one would use aspring element 44 with a large spring constant. A large amount of force required to compressspring element 44 would cause a large expansion force of cylindricalexpandable arbor 38 before the force would equalize andspring element 44 would be compressed. This large spring force could be any force which ensures that the bore is clamped before it is drawn against locatingsurface 86. If sufficient clamping force is not obtained before the work piece is drawn against locatingsurface 86, then the insufficient force could cause cylindricalexpandable arbor 38 to broach the bore. If too much force is applied, then the internal bore could be permanently marked. The proper forces can be obtained without undue experimentation and depends on the material which the work piece is constructed from. - Referring now to FIG. 9, a second embodiment of the present invention is shown and described. Here,
spacer spring element 44 are replaced by a smaller diameter bore 25 insupport platform 14. Whenhydraulic cylinder 42 draws cylindricalexpandable arbor 38 downward,wing 72 intersectssupport platform 14 instead ofspacer 108 of the first embodiment. As such, thesupport platform 14, itself, provides the required opposite force onwing 72 for clamping action. Although this embodiment does not provide the clamping force distribution as the springs in the first embodiment, it does result in reduced construction costs. - Referring now to FIG. 10, a third embodiment of the present invention is shown and described. Here, two
separate clamping devices 12 are mounted to supportplatform 14. Each clampingdevice 12 operates as disclosed in the first embodiment above. Each clamping device is positioned to clamp a different bore on one work piece. Because of the absence of support on cylindricalexpandable arbor 38 bycylindrical region 82, as discussed in the first embodiment, each cylindricalexpandable arbor 38 is able to laterally flex. As a result, a work piece having inaccurate, rough, bores can be clamped without the requirement that each bore be an accurate distance away from the respective bore. - In FIG. 11, a fourth embodiment is shown having two clamping
devices locator assembly 16 is mounted to locatingsurface 86 of clampingdevice 122.Locator assembly 16 is attached to locatingsurface 86 andsupport platform 14 bybolt 32. Here,locator assembly 16 acts to slide into a bore and accurately position a work piece which is being machined. Thus, in operation, bores contained in a work piece are slid over a respective cylindricalexpandable arbor 38 of clampingdevice locator assembly 16. Thelocator assembly 16 serves to accurately position the work piece while theclamping devices - In FIG. 12, a fifth embodiment of the present invention is shown having a clamping
device 12 and clamping devices 122 (which havelocator assemblies 16. Unlike the locator in the fourth embodiment, the plurality oflocators 16 in the fifth embodiment restrain the work piece from moving in both translational (x and y) as well as rotational about any onelocator assembly 16. Also, clampingdevices - FIG. 13 illustrates an
alternative arbor 200 that is an improvement to thearbor 38 shown in FIG. 2.Arbor 200 is designed to prevent metal chips that are created from the machining operation from getting into the slot or engaging the periphery of the arbor. This is accomplished by providing aflat top 202 and an adjoiningchamfer 204 extending downwardly into avertical edge 206 of the upper end of thearbor 200. Avertical slot 208 is cut through the center of thebody 210 of the arbor and extends from afirst end 212 to thedistal end 214 of the arbor. Theslot 208 is configured to receive awedge 216 which extends longitudinally a substantial portion of the arbor. Adjacent theslot 208 is avertical slit 218 located in thevertical edge 206 which blends into ahorizontal slit 220. This configuration is preferably wire cut into the arbor and allows for outward expansion of the arbor when thewedge 216 is moved upwardly. The location of thehorizontal slit 220 allows flexible expansion of the arbor, while minimizing metal chips from entering into theslot 208 or from entering into the bore of the work piece that is being machined. - The
wedge 216 is similar in design to thewedge 46 disclosed in FIG. 4A, however thetip 222 is more blunt than the tip shown in FIG. 2. By modifying the tip, the rate at which thearbor 200 expands can be controlled. A narrowedsection 224 extends betweenchamfer 226 andlower edge 228. Thelower edge 228 engages the upper surface of the work piece for clamping it to thesupport 40. - With reference to FIG. 14, an
improved clamping device 300 is disclosed. Where possible, like reference numerals will be used. Theclamping device 300 is similar to theclamping devices arbor 302 has been modified to take on a variation of the arbor illustrated in FIGS. 13 and 5. Thearbor 302 has a flat top 202 withserrations 304 extending down avertical edge 306 so as to create a gripping surface for engagingbore 308 ofwork piece 112. Aninner channel 310 extends from thevertical edge 306 inward to the center line of the arbor and then vertical to where it meetsslot 208. Thesame wedge 216 is used inarbors work piece 112. The wedges, arbor and other components of the clamping device are preferably made of steel. - The
clamping device 300 further has anelevated support pad 40 for clamping thework piece 112 against, afixture base 14, ahydraulic cylinder block 312 connected bybolts 314 to thesupport pad 40 and thefixture base 14, and anend cap 316. A plurality ofbolts 318 extend vertically through theend cap 316 and are connected to thehydraulic cylinder block 312. A floatingpiston 320 moves withincavity 322 which is in turn defined by internal walls of thehydraulic cylinder block 312 and theend cap 316. Thedouble acting piston 320 is hydraulically actuated and a first hydraulic pressure line 324 provides inlet pressure for a clamp mode of operation. A second hydraulichigh pressure line 326 provides hydraulic fluid tocavity 322 during the unclamping mode of operation. Thepiston 320 includesgrooves 328 for receivingseals 330 for creating a tight connection between thepiston 320 andinner wall 332 of thecavity 322. Thepiston 320 further includes an internally threadedbore 334 extending the entire longitudinal length of the piston and is operable to receivescrew 336 that is concentric with and is secured to the lower end ofarbor 302. Anut 338 is threaded to the lower end of thescrew 336 and provides for axial adjustment of the arbor. - The
clamping device 300 further includesspacers spring 344. Thesprings 344 provide for axial dampening of thearbor 302 as it is drawn downward for engagement with thework piece 112. Aseal 346 is positioned within thesupport pad 340 and engages theouter diameter 348 of thearbor 302 and prevents metal shavings from further working down into theclamping device 300. - FIG. 14 illustrates the clamping device in the unclamped position where the
work piece 112 is not yet located to a machining position against thesupport pad 40. FIG. 15 illustrates thework piece 112 drawn into position against theupper surface 350 of thesupport pad 40. This is accomplished by activating hydraulic pressure line 324 which in turn causespiston 320 to move downward. As thepiston 320 moves downward,wings 72 react againstspacer 340 causing a biasing force againstsprings 344 which in turn react againstspacer 342. It will be appreciated that thesprings 344 could be removed thus eliminating the dampening effect and causing a more abrupt reaction and outward expansion of theserrations 304 against the bore of thework piece 112. That particular aspect is illustrated in the FIG. 16 alternative embodiment. As thepiston 320 continues to move downward, thetip 222 continues to engage the slopedinner channel 352 of the arbor causing outward expansion and theserrations 304 to engage thebore 308, which in turn secures thework piece 112 in position to allow the machine operation to begin. Thecap 202 is appropriately located so as to prevent metal shavings to enter into theslot 208. - FIG. 16 illustrates a seventh form of the present invention that utilizes an edge-gripping arbor having a cap without any serrations. It will be appreciated that a combination of the FIGS. 14 and 16 embodiments could be used. Clamping
device 400 differs from theclamping device 300 illustrated in FIG. 14, in that the tip of the arbor has an outwardly extending horizontal portion, orcollar 402 that is operable to engage theupper surface 404 of thework piece 112. The free floating hydraulic clamping device with the edge gripping arbor is operable to provide significant clamping force to secure thework piece 112 against thesupport pad 40. This design eliminates any broaching problems that could occur with serrated type designs if excessive force were to be exerted downward by the arbor during the clamping procedure. - FIG. 16 illustrates the
clamping device 400 in the unclamped position where thewedge 216 is in the retracted position thus allowing the arbor to close inwardly in the horizontal cross-sectional view. - With reference to FIG. 17, the
clamping device 400 is shown with thework piece 112 secured in position. This is accomplished by a fluid, for example, hydraulic fluid, passing through hydraulic pressure line 324 causing thepiston 320 to move downward. Aspacer 406 is used instead of the previously discussedwashers 344 to create a faster clamping reaction. Thearbor 408 is constructed similar to thearbor 302 except that there are no serrations. Instead, thecap 202 has a splitedge gripping member 410 that is expandable to a predetermined position. As thearbor 408 progresses downward during pressurization of the hydraulic line 324, the bottom ofwing 72 of thewedge 216 bottoms out on the top surface ofspacer 406. This causestip 222 of the wedge to protrude up into theinner channel 352 causing outward expansion of theedge gripping member 410. Once thehorizontal edge 402 passes over and engagescorner 412 of thework piece 112, thearbor 408 can now be secured in place by the next step. This is accomplished by drawing thearbor 408 down causing the grippingmember 410 to bear down and lock the work piece in place. Thework piece 112 is now firmly secured to thesupport pad 40 allowing the work piece to be machined. In the locked position as illustrated in FIG. 17, a seal is created between theedge gripping member 410 and thecorners 412 of the work piece, which prevent metal particles from working their way down into the inner working components of theclamping device 400. - Once the
work piece 112 is machined,hydraulic line 326 is pressurized causingpiston 320 to move upwardly thus allowingwedge 216 to retract within aslot 208 which, in turn, allows the splitedge gripping member 410 to close and disengage from thework piece 112. The work piece can now be lifted off of theclamping device 400 wherein the method of machining can be repeated. - It will be appreciated that other variations of the free floating hydraulic clamping device utilizing an edge gripping arbor can be utilized.
- The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention. Such variations or modifications, as would be obvious to one skilled in the art, are intended to be included within the scope of the following claims.
Claims (20)
1. A workholder for securing a work piece comprising:
a platform;
a clamping device assembly mounted to said platform, the clamping device assembly having an expandable arbor with an internal slot longitudinally extending through a center of the arbor with an edge gripping member located at a distal end, the edge gripping member having a cap portion and a shoulder portion where the shoulder portion is operable to engage a top surface of the work piece;
a wedge located within the slot of the arbor; and
an actuating device for moving the arbor.
2. The workholder as claimed in , wherein the cap portion of the arbor has a plurality of serrations positioned to engage an inner bore of the work piece.
claim 1
3. The workholder as claimed in , wherein the edge-gripping member includes teeth disposed about a perimeter of the arbor.
claim 1
4. The workholder as claimed in , further comprising a work piece support pad disposed between the work piece and the platform, the support pad having a bore operable to receive the arbor.
claim 1
5. The workholder as claimed in , wherein the activating device includes a fluid actuated cylinder that is connected to a lower end of the arbor.
claim 1
6. The workholder as claimed in , further comprising a seal disposed around an outer diameter of the arbor.
claim 1
7. The workholder as claimed in , wherein the actuating device includes ports for delivering fluid to a piston that is connected to the arbor.
claim 1
8. The workholder as claimed in , further comprising a means for adjusting the arbor.
claim 1
9. A workholder for securing a work piece during a machining operation comprising:
an actuating device;
an arbor having a lower end and an upper end where the lower end is connected to the actuating device, the upper end having a slot extending vertically with a tapered profile, a plurality of spaced apart serrations circumscribing a perimeter near the upper end, the upper end having a horizontal slit and a cover; and
a support platform for mounting the actuating device thereto.
10. The workholder as claimed in , wherein the arbor is free floating and expandable.
claim 9
11. The workholder as claimed in , further comprising a work piece support pad positioned between the work piece and the support platform.
claim 9
12. The workholder as claimed in , further comprising a wedge having a profile to match the shape of the slot.
claim 9
13. The workholder as claimed in , wherein the actuating device is hydraulically actuated and is double actuated.
claim 9
14. The workholder as claimed in , further comprising:
claim 9
a spring element positioned in a cavity of the actuating device;
a wedge positioned within said slot, said wedge having a pair of wings extending from opposing sides of said wedge and said slot, said wings extending outwardly from said expandable arbor and over the spring element.
15. A workholder for securing a work piece during a machining operation comprising:
a support platform;
a clamping device mounted to said support platform, said clamping device having a cylindrical expandable arbor extending upward from said support platform for positioning through a bore of the work piece and engaging an outer edge of the bore of the work piece, the arbor having a cap portion located at one end that is operable to cover the bore, the arbor further having a longitudinally extending slot;
a wedge positioned within the slot, the wedge having a tapered end portion that engages the slot so as to cause outward movement of the arbor.
16. A method of securing a work piece during a machine operation comprising the steps of:
providing a work piece having an internal bore and an underside;
providing a clamping device, the clamping device having an expandable arbor with a tip located on one end thereof;
positioning the arbor through the bore from the underside of the work piece;
expanding the tip of the arbor causing the tip to engage the bore of the work piece; and
moving the tip of the arbor down and securing the work piece in place.
17. The method as claimed in , wherein the step of expanding the tip includes gripping an outer edge of the bore of the work piece.
claim 16
18. The method as claimed in , further comprising the step of penetrating serrations that are located on the tip of the arbor into the bore, and forcing the work piece in a downward direction so as to lock the work piece into a machining position.
claim 16
19. The method as claimed in , wherein the moving step is accomplished by a hydraulic actuator.
claim 16
20. The method as claimed in further comprising the step of securing the work piece against a work support member and machining the work piece.
claim 16
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/851,061 US6390460B2 (en) | 1999-10-26 | 2001-05-08 | Free-floating hydraulic clamping device with edge-gripping arbor |
US10/152,704 US6978988B2 (en) | 1999-10-26 | 2002-05-20 | Free-floating hydraulic clamping device with edge-gripping arbor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/426,597 US6241228B1 (en) | 1999-10-26 | 1999-10-26 | Free-floating hydraulic clamping device using expandable arbor |
US09/851,061 US6390460B2 (en) | 1999-10-26 | 2001-05-08 | Free-floating hydraulic clamping device with edge-gripping arbor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/426,597 Continuation-In-Part US6241228B1 (en) | 1999-10-26 | 1999-10-26 | Free-floating hydraulic clamping device using expandable arbor |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/152,704 Continuation US6978988B2 (en) | 1999-10-26 | 2002-05-20 | Free-floating hydraulic clamping device with edge-gripping arbor |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010028138A1 true US20010028138A1 (en) | 2001-10-11 |
US6390460B2 US6390460B2 (en) | 2002-05-21 |
Family
ID=23691436
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/426,597 Expired - Fee Related US6241228B1 (en) | 1999-10-26 | 1999-10-26 | Free-floating hydraulic clamping device using expandable arbor |
US09/851,061 Expired - Fee Related US6390460B2 (en) | 1999-10-26 | 2001-05-08 | Free-floating hydraulic clamping device with edge-gripping arbor |
US10/152,704 Expired - Fee Related US6978988B2 (en) | 1999-10-26 | 2002-05-20 | Free-floating hydraulic clamping device with edge-gripping arbor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/426,597 Expired - Fee Related US6241228B1 (en) | 1999-10-26 | 1999-10-26 | Free-floating hydraulic clamping device using expandable arbor |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/152,704 Expired - Fee Related US6978988B2 (en) | 1999-10-26 | 2002-05-20 | Free-floating hydraulic clamping device with edge-gripping arbor |
Country Status (2)
Country | Link |
---|---|
US (3) | US6241228B1 (en) |
CA (1) | CA2324738C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120319340A1 (en) * | 2010-03-01 | 2012-12-20 | Takayuki Kawakami | Clamping device |
CN108655479A (en) * | 2018-07-10 | 2018-10-16 | 重庆亨睿达机械有限公司 | Motorcycle reverse gear axis machining apparatus |
CN109202137A (en) * | 2018-11-12 | 2019-01-15 | 东莞市固达机械制造有限公司 | Multi-mode digital-control two-head milling machine |
CN110039349A (en) * | 2019-05-31 | 2019-07-23 | 海纳川(滨州)轻量化汽车部件有限公司 | A kind of high-precision pin hole positioning device |
CN112045800A (en) * | 2020-09-16 | 2020-12-08 | 江西美纳途智能科技有限公司 | Case and bag nailing is with assembly robot with adjustable angle |
CN117139684A (en) * | 2023-10-30 | 2023-12-01 | 成都天科航空制造股份有限公司 | Hinge drilling device and drilling method for wing part |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19818478A1 (en) * | 1998-04-24 | 1999-11-04 | Steag Hama Tech Ag | Device for fixing substrates |
IT246948Y1 (en) * | 1999-12-17 | 2002-04-10 | Fata Group S P A | MACHINING SYSTEM WITH LOCKING DEVICE AND CENTERING DISCS IN MACHINING STATIONS. |
US6371469B1 (en) * | 2000-06-06 | 2002-04-16 | David T. Gray | Expandable mandrel |
DE10151169A1 (en) * | 2001-10-19 | 2003-05-08 | Gerd-Juergen Weidner | Process for cutting workpieces |
US6827345B2 (en) | 2003-02-20 | 2004-12-07 | The Boeing Company | Wedge-lock fastener and associated installation and assembly methods |
US7175024B2 (en) * | 2003-04-25 | 2007-02-13 | Medtronic, Inc | Configurable insert for a manufacturing carrier |
JP2005066748A (en) * | 2003-08-25 | 2005-03-17 | Kosmek Ltd | Clamping device and clamping system |
US9307648B2 (en) * | 2004-01-21 | 2016-04-05 | Microcontinuum, Inc. | Roll-to-roll patterning of transparent and metallic layers |
US7833389B1 (en) * | 2005-01-21 | 2010-11-16 | Microcontinuum, Inc. | Replication tools and related fabrication methods and apparatus |
US8062495B2 (en) * | 2005-01-21 | 2011-11-22 | Microcontinuum, Inc. | Replication tools and related fabrication methods and apparatus |
DE102005025757A1 (en) * | 2005-06-02 | 2006-12-21 | Eisenmann Maschinenbau Gmbh & Co. Kg | Handling device for handling a motor vehicle rim in a surface treatment plant |
CA2643510C (en) | 2006-02-27 | 2014-04-29 | Microcontinuum, Inc. | Formation of pattern replicating tools |
CN101337340B (en) * | 2007-07-06 | 2011-06-08 | 鸿富锦精密工业(深圳)有限公司 | Clamp |
FR2919691B1 (en) * | 2007-08-03 | 2009-10-30 | Lisi Aerospace Soc Par Actions | SCRAPPING STAPLER AND USE THEREOF FOR TEMPORARILY FIXING A DRILLING GRID ON ASSEMBLED ELEMENTS |
EP2244032A3 (en) * | 2009-04-24 | 2012-08-22 | ZYRUS Beteiligungsgesellschaft mbH & Co. Patente I KG | Solar collector and method for manufacturing such a solar collector |
US8800997B1 (en) * | 2009-07-29 | 2014-08-12 | Hydra-Lock Corporation | Stepped collet |
JP2012042185A (en) | 2010-08-23 | 2012-03-01 | Mitsubishi Heavy Ind Ltd | Clamper, and in-water-chamber operation device |
JP2012040674A (en) * | 2010-08-23 | 2012-03-01 | Mitsubishi Heavy Ind Ltd | Clamper, working device in water chamber, and clamp method |
US10052744B2 (en) * | 2011-01-10 | 2018-08-21 | GM Global Technology Operations LLC | Fixture for supporting a workpiece |
US9589797B2 (en) | 2013-05-17 | 2017-03-07 | Microcontinuum, Inc. | Tools and methods for producing nanoantenna electronic devices |
CN104209891B (en) * | 2013-05-31 | 2016-12-28 | 富泰华工业(深圳)有限公司 | The swelling assembly of detent mechanism and employing thereof |
CN103963183A (en) * | 2014-04-30 | 2014-08-06 | 大连理工大学 | Clamp device for linearly cutting crystal with round hole |
US10010946B2 (en) * | 2015-05-04 | 2018-07-03 | Honda Motor Co., Ltd. | Apparatus for retaining a workpiece, and methods of use and manufacture thereof |
CN105436910A (en) * | 2015-06-12 | 2016-03-30 | 新兴重工湖北三六一一机械有限公司 | Fast clamp replacing device |
CN109202512B (en) * | 2018-11-12 | 2020-05-08 | 东莞市固达机械制造有限公司 | Large workpiece active positioning device for numerically controlled milling machine |
US11185163B2 (en) * | 2019-10-18 | 2021-11-30 | Frazier Industrial Company | Alignment tool |
CN110900232B (en) * | 2019-12-17 | 2021-08-24 | 苏州精锐精密机械有限公司 | Floating support device |
US11466719B2 (en) * | 2019-12-20 | 2022-10-11 | Spirit Aerosystems, Inc. | Cap for temporary fastener |
Family Cites Families (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1427155A (en) | 1921-07-20 | 1922-08-29 | Hiram L Haven | Collapsible arbor |
US1959008A (en) * | 1932-04-05 | 1934-05-15 | Ludwie A Wilezek | Carbon holder |
US2294013A (en) * | 1942-01-09 | 1942-08-25 | Monogram Mfg Co | Clamping tool |
US2354480A (en) | 1942-04-30 | 1944-07-25 | Rossi Irving | Fastener |
US2317315A (en) * | 1942-06-02 | 1943-04-20 | Herman H Helbush | Skin clamp |
US2424309A (en) | 1943-06-16 | 1947-07-22 | Elvy Charles | Temporary holding pin |
US2399831A (en) | 1944-06-08 | 1946-05-07 | Arthur V Whittington | Collet chuck |
US3000086A (en) * | 1957-05-29 | 1961-09-19 | Oscar N Davis | Cam locked sheet metal clamp with independently operable expander pin |
US2950525A (en) * | 1958-08-26 | 1960-08-30 | Edward J Duncan | Tube puller |
US3096679A (en) * | 1960-03-14 | 1963-07-09 | Monogram Prec Ind Inc | Sheet clamp having a one eared spreader bar |
US3017192A (en) | 1960-06-23 | 1962-01-16 | Illowsek Anton | Expandable chucks |
US3139785A (en) | 1961-08-30 | 1964-07-07 | Wedgelock Corp Of California | Axial load bearing anchoring means for fastener pins |
US3162072A (en) * | 1963-06-10 | 1964-12-22 | Wedgelock Corp Of California | Nut runner attachment |
US3289525A (en) | 1964-03-16 | 1966-12-06 | Monogram Ind Inc | Positive release pin-type clamp |
US3331268A (en) * | 1965-04-19 | 1967-07-18 | Monogram Ind Inc | Clamp actuating tool |
US3537701A (en) * | 1967-08-21 | 1970-11-03 | Dean A Claycomb | Spring loaded jack lock assembly |
GB1243976A (en) | 1967-08-22 | 1971-08-25 | Molins Machine Co Ltd | Improvements in or relating to fixing arrangements for securing workpieces |
US3638934A (en) * | 1967-11-06 | 1972-02-01 | Bell & Howell Co | Precision positioning tool |
US3587371A (en) | 1968-12-11 | 1971-06-28 | John F Sherwood | Expanding arbor-collet |
US3568562A (en) | 1969-01-10 | 1971-03-09 | Monogram Ind Inc | Clamp with predetermined clamping force |
DE1956035C3 (en) | 1969-11-07 | 1978-11-16 | Zinser Textilmaschinen Gmbh, 7333 Ebersbach | Pin-like gripper of a tube gripping device |
US3654685A (en) * | 1970-03-16 | 1972-04-11 | Rohr Corp | Apparatus for installing bushings |
US3747445A (en) * | 1971-05-06 | 1973-07-24 | C Piotrowski | Expansible work holder |
AT314314B (en) | 1971-08-20 | 1974-03-25 | Borg Warner Stieber Gmbh | Clamping device for clamping workpieces |
US3797173A (en) * | 1971-11-01 | 1974-03-19 | Norton Co | Work holding, positioning, and feeding mechanism |
US3735994A (en) * | 1971-12-06 | 1973-05-29 | Gleason Works | Work holding chuck and arbor |
US3770287A (en) * | 1972-01-13 | 1973-11-06 | Positrol Inc | Hydraulically controlled holding device |
US3791011A (en) * | 1972-04-24 | 1974-02-12 | J Keys | Tube pulling device |
US3947950A (en) * | 1974-06-24 | 1976-04-06 | Pressure Vessels, Inc. | Apparatus and method for beading tubes |
US4000556A (en) * | 1975-11-17 | 1977-01-04 | Ciminero Anthony S | Method and apparatus for pulling tubes |
US4208061A (en) * | 1978-12-01 | 1980-06-17 | Morawski London T | Chuck with retractable stop |
US4198066A (en) * | 1978-12-15 | 1980-04-15 | The Gleason Works | Expandable arbor for holding a stack of elements |
US4321745A (en) * | 1980-04-28 | 1982-03-30 | Energy Design Corp. | Sealing method |
US4369569A (en) * | 1981-06-06 | 1983-01-25 | Armstrong & Sons | Tube-pulling apparatus |
US4393674A (en) | 1981-06-25 | 1983-07-19 | Air-Mo Hydraulics, Inc. | Hydraulic chuck device for engagement with the inside of a tube |
US4688321A (en) * | 1984-01-16 | 1987-08-25 | General Dynamics Corporation | Method for securing a workpiece to a fixture |
US4934885A (en) * | 1985-02-25 | 1990-06-19 | The Boeing Company | Tack fastener |
US4787274A (en) * | 1985-03-29 | 1988-11-29 | Monogram Industries, Inc. | Installing tool for wedging-type fasteners |
US4728217A (en) * | 1986-02-26 | 1988-03-01 | Westinghouse Electric Corp. | Gripper apparatus and method |
US4706972A (en) * | 1987-01-23 | 1987-11-17 | Precision Devices, Inc. | Expanding arbor for locating the axis of an internal surface |
FR2629529B1 (en) * | 1988-04-01 | 1990-12-28 | Aerospatiale | |
US4932642A (en) * | 1988-04-12 | 1990-06-12 | Hines Industries, Inc. | Workpiece support tooling |
SU1678549A1 (en) | 1989-05-11 | 1991-09-23 | Ленинградское Отделение Всесоюзного Проектно-Изыскательского И Научно-Исследовательского Института Гидропроект Им.С.Я.Жука | Collet |
JPH0470163U (en) | 1990-09-17 | 1992-06-22 | ||
US5131637A (en) | 1991-05-13 | 1992-07-21 | Vaught James V | Work holder for honeycomb structure |
US5224690A (en) * | 1991-05-13 | 1993-07-06 | Vaught James V | Work holder for honeycomb structure |
US5103548A (en) * | 1991-05-13 | 1992-04-14 | Fatigue Technology, Inc. | Method and apparatus for securing a tubular bushing in a circular opening |
CN2151838Y (en) | 1993-02-08 | 1994-01-05 | 许显华 | Mandrel for internal spline part |
US5370378A (en) * | 1993-09-13 | 1994-12-06 | Positrol, Inc. | Work holding system |
US5630577A (en) | 1994-12-16 | 1997-05-20 | Tankersley; James E. | Clamp assembly |
US5961107A (en) | 1996-03-06 | 1999-10-05 | Morghen; Manfred A. | Workpiece indexing and clamping system |
US6196779B1 (en) * | 1999-02-11 | 2001-03-06 | The Boeing Company | Temporary fastener with projecting tool-guide bushing |
-
1999
- 1999-10-26 US US09/426,597 patent/US6241228B1/en not_active Expired - Fee Related
-
2000
- 2000-10-26 CA CA002324738A patent/CA2324738C/en not_active Expired - Fee Related
-
2001
- 2001-05-08 US US09/851,061 patent/US6390460B2/en not_active Expired - Fee Related
-
2002
- 2002-05-20 US US10/152,704 patent/US6978988B2/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120319340A1 (en) * | 2010-03-01 | 2012-12-20 | Takayuki Kawakami | Clamping device |
US8800982B2 (en) * | 2010-03-01 | 2014-08-12 | Pascal Engineering Corporation | Clamping device |
CN108655479A (en) * | 2018-07-10 | 2018-10-16 | 重庆亨睿达机械有限公司 | Motorcycle reverse gear axis machining apparatus |
CN109202137A (en) * | 2018-11-12 | 2019-01-15 | 东莞市固达机械制造有限公司 | Multi-mode digital-control two-head milling machine |
CN110039349A (en) * | 2019-05-31 | 2019-07-23 | 海纳川(滨州)轻量化汽车部件有限公司 | A kind of high-precision pin hole positioning device |
CN112045800A (en) * | 2020-09-16 | 2020-12-08 | 江西美纳途智能科技有限公司 | Case and bag nailing is with assembly robot with adjustable angle |
CN117139684A (en) * | 2023-10-30 | 2023-12-01 | 成都天科航空制造股份有限公司 | Hinge drilling device and drilling method for wing part |
Also Published As
Publication number | Publication date |
---|---|
US6390460B2 (en) | 2002-05-21 |
CA2324738C (en) | 2006-07-04 |
US6241228B1 (en) | 2001-06-05 |
CA2324738A1 (en) | 2001-04-26 |
US20020175459A1 (en) | 2002-11-28 |
US6978988B2 (en) | 2005-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6390460B2 (en) | Free-floating hydraulic clamping device with edge-gripping arbor | |
DE3909630C2 (en) | ||
EP1910029B1 (en) | Tensioning device | |
US4445264A (en) | Tool for a method of forming dimples in sheet metal for recessing rivet heads | |
DE102006011581B4 (en) | Cutting insert and milling tool | |
EP1834724B1 (en) | Clamping arrangement for positioning workpieces in a machine tool | |
EP1762330B1 (en) | Positioning and tensioning device for tools and/or workpieces | |
US4848198A (en) | Chip breaking tool holder | |
DE102014119482B4 (en) | Tool clamping device, tool holder and tool carrier | |
EP1529585B1 (en) | Expanding clamping device | |
DE4430171A1 (en) | Form-locked insert | |
MXPA03006912A (en) | Wedge-lockable removable punch and die bushing in retainer. | |
DE3237705A1 (en) | SLIDE WEDGE TENSIONER | |
EP3263274A1 (en) | Clamping device and clamping system | |
EP3638453B1 (en) | Method, device, and aid element for mounting a workpiece | |
US5125145A (en) | Tamping tool removal system | |
US5624106A (en) | Gripping device | |
US4565476A (en) | Internal hydraulic clamp | |
WO2015132358A1 (en) | Tool slide | |
US4688321A (en) | Method for securing a workpiece to a fixture | |
DE19504916C2 (en) | Attachment jig | |
US20020089109A1 (en) | Adjustable vise jaw assembly | |
US4227838A (en) | Grooving and cut-off tool | |
US4781095A (en) | Pusher | |
DE19860013C2 (en) | Device for clamping a sealing ring on a machine tool |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: INNOVATIVE TECHNOLOGIES UNLIMITED LLC, MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHUPICK, CHARLES;REEL/FRAME:017914/0661 Effective date: 20060126 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
|
FP | Lapsed due to failure to pay maintenance fee |
Effective date: 20140521 |