WO1998017429A1 - Compliant top jaws with machinable inserts - Google Patents
Compliant top jaws with machinable inserts Download PDFInfo
- Publication number
- WO1998017429A1 WO1998017429A1 PCT/US1997/019096 US9719096W WO9817429A1 WO 1998017429 A1 WO1998017429 A1 WO 1998017429A1 US 9719096 W US9719096 W US 9719096W WO 9817429 A1 WO9817429 A1 WO 9817429A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- top jaw
- slot
- jaw
- pad
- jaws
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/16—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving radially
- B23B31/1627—Details of the jaws
- B23B31/16275—Form of the jaws
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/19—Radially reciprocating jaws
- Y10T279/1986—Jaws
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3462—Jaw insert
- Y10T279/3468—Machinable jaw
-
- 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
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3462—Jaw insert
- Y10T279/3468—Machinable jaw
- Y10T279/3475—Locking or positioning means
Definitions
- the present invention relates generally to lathe chuck jaws and more particularly to compliant lathe chuck top jaws with machinable inserts which better accommodate long workpieces.
- a lathe power chuck has a body with three 1 20 degree radial slots. Each slot contains a master jaw which moves radially inward and outward in unison with the others.
- a replaceable top jaw mounts to each master jaw for moving inward to grip a workpiece.
- top jaws have replaceable, malleable pads or inserts mounted to them which engage the workpiece.
- pads can be purchased, a machinist may wish to fabricate pads from soft bar stock using a lathe. While this method is feasible, a more convenient means is needed.
- a machinist may wish to true the contact surfaces of the jaws which receive the pads to match the jaws to the lathe. However, a convenient means to true the jaws is needed. Disclosure of Invention
- Each top jaw has a transverse recess and slot, with the slot connecting the recess with the bottom side. Both the recess and the slot extend completely through the top jaw. The recess and the slot allow a slight flexing of the contact face of the top jaw relative to the bottom.
- Each top jaw also has two threaded holes that are parallel to the central axis of the jaw and extend from a rearward end to the slot. Each of the holes contains a set screw and a loading pin whose combined length is less than the length of the hole. When the screw is threaded into the hole, the screw slidingly moves the pin toward the contact face of the top jaw. This arrangement is used to limit the deflection of the top jaw.
- FIG. 1 is an isometric view of a power chuck having chuck jaws constructed according to the invention.
- Figure 2 is a sectional side view of one of the top jaws of the chuck of Figure 1 .
- Figure 3 is a sectional top view of the top jaw of Figure 2, taken along the line 3-3 of Figure 2.
- Figure 4 is an isometric view of the top jaws of Figure 1 holding pad blanks prior to machining into pads.
- Figure 5 is a sectional top view of one pad blank.
- Figure 6 is a top view of the top jaws holding a truing ring as they would be configured in a chuck for truing contact faces of top jaws prior to mounting the contact pads.
- Figure 7 is a sectional side view of two top jaws of Figure 6, taken along the line 7-7 of Figure 6, and shown during a truing operation.
- Figure 8 is an isometric view of a power chuck with a second embodiment of the top jaws.
- Figure 9 is a top view of one of the top jaws of Figure 8.
- Figure 10 is a sectional side view of the top jaw of Figure 9 taken along the line 1 0-1 0 of Figure 9.
- Figure 1 1 is a sectional side view of the top jaw of Figure 9 taken along the line 1 1 -1 1 of Figure 9.
- Figure 12 is a top view of a boring ring located on the power chuck of Figure 8 for machining soft pads of the top jaws of Figure 8.
- Figure 1 3 is a partial upper sectional side view of the boring ring of Figure 1 2 taken along the line 1 3-13 of Figure 12.
- Figure 14 is a side sectional view of the boring ring of Figure 1 2 taken along the line 14-14 of Figure 1 2.
- Figure 1 5 is an isometric view of the top jaws of Figure 8 holding soft pad blanks prior to machining into pads.
- Figure 1 6 is an enlarged sectional front view of portions of two of the pad blanks of Figure 1 5 taken along the line 1 6-1 6 of Figure 1 5.
- Figure 1 7 is an isometric view of one of the top jaws of Figure 8 fitted with an adapter to hold a hardened collet pad.
- Figure 1 8 is an enlarged isometric view of the top jaw, adapter and pad of Figure 17. Best Mode for Carrying Out the Invention
- Chuck 1 1 has a cylindrical body 1 3 and a plurality of top jaws 31 that are each removably secured to a master jaw 21 .
- Master jaws 21 radially slide along a top side 1 7 of body 1 3.
- the words "top” and “bottom” are used only for convenience and do not refer to actual upper and lower surfaces.
- Each master jaw 21 has a row of grooves 25 on a top side which engage mating grooves 35 on a bottom side 33 of top jaw 31 .
- Top jaw 31 is removably secured to master jaw 21 with bolts (not shown) that extend through sockets 45 in top jaw 31 . The bolts thread into receptacles (not shown) in master jaw 21 that align with sockets 45.
- Top jaw 31 has a longitudinal axis 32 and a bottom side 33 that is parallel to axis 32.
- Top jaw 31 has a replaceable insert or pad 37 that is removably secured to a forward end or face 38 with a clamp screw 39.
- pad 37 may be attached to top jaw 31 with a screw that extends through a hole parallel to the longitudinal axis 32.
- Pad 37 is used to provide a contact surface to hold a workpiece to be machined.
- Pads 37 can be for round stock, hex stock, square stock, or can be custom made to other configurations.
- Each top jaw 31 has an elliptical aperture or recess 41 that is at an acute angle relative to axis 32.
- Top jaw 31 has a slot 43 that is perpendicular to axis 32 and connects recess
- Slot 43 is approximately one-tenth of an inch wide in the preferred embodiment.
- Both recess 41 and slot 43 extend completely through top jaw 31 , from one side to the other.
- Top jaw 31 has two threaded holes 51 that are parallel to axis 32. Holes 51 extend from a rearward end 64 of top jaw 31 toward forward end 38.
- Holes 51 extend through slot 43 and a slot wall 62, but holes 51 do not completely penetrate top jaw 31 .
- Each hole 51 contains a set screw 53 and a loading pin 55 whose combined length is less than the length of hole 51 .
- screw 53 slidingly moves pin 55 toward forward end 38 of top jaw 31 . If screw 53 is advanced to full make-up, pin 55 will contact the end or backstop 63 of hole 51 .
- Backstop 63 should be considered as a part of slot wall 62.
- the positions of pins 55 are set to provide a desired clearance between backstop 63 and the ends of pins 55. This determination adjusts the effective width of slot 43 and, thus, the amount of allowed deflection.
- the amount of deflection required for each job is a function of the material of the workpiece, the chuck hydraulic pressure, and the condition of the chuck.
- pins 55 are loosened and spaced apart from backstop 63.
- a workpiece is "preloaded" in chuck 1 1 by clamping top jaws 31 on the workpiece at the desired pressure. Once the amount of deflection required for a certain job is determined by preloading chuck
- pins 55 are firmly locked against backstop 63 while top jaws 31 are clamped on the workpiece. This is done to limit deflection of forward end 38 to that point. The workpiece may then be machined. This configuration provides a more rigid condition for heavy machining loads. Top jaw 31 may also be effectively locked from all motion while under load by simply locking pins 55 against backstop 63 prior to applying any load. When chuck 1 1 is opened to load the next workpiece, forward end 38 of top jaw 31 can flex in a forward direction from the clamped position. The forward ends of pins 55 will now be spaced away from backstop 63.
- top jaws 31 are clamped against a workpiece (not shown) .
- pad 37 applies clamping pressure to the workpiece
- recess 41 and slot 43 allow forward end 38 of top jaw 31 to deflect relative to bottom side 33.
- the width of slot 43 decreases until pins 55 contact backstop 63.
- zone 30 is the area of top jaw 31 which undergoes bending to achieve the required compliant behavior. This motion allows pad 37 to maintain even pressure on the workpiece instead of cocking, thereby minimizing deflection of the workpiece during machining. In this motion, zone 30 of top jaw 31 acts like a spring or a hinge.
- pins 55 may be positioned to provide a desired gap between pins 55 and backstop 63. In this position, forward end 38 will be able to deflect only until pins 55 contact backstop 63 since screws 53 will stop further rearward movement of pins 55 by acting as a hard stop.
- holes 51 may end at slot 43 (not shown) and not penetrate slot wall 62. In this alternate embodiment, pins 55 would simply land on slot wall 62 which serves as the backstop to limit deflection of forward end 38.
- Pads 37 may be created with this invention for matching a particular chuck.
- a cylindrical pad blank 71 is loaded into chuck 1 1 .
- Pad blank 71 has been previously cut into a number of congruent sections 73 equal to the number of jaws 1 5 utilized by chuck 1 1 .
- an annular rib 72 is cut on the exterior of pad blank 71 to match the contours on the face of top jaw 31 .
- a sectional view of a single section 73 is shown in Figure 5.
- Each section 73 has semi-cylindrical notches 75 located near partially cylindrical outer wall 77.
- Section 73 has a threaded hole 78 at outer wall 77 which extends radially inward.
- Notches 75 function as keyed slots for closely receiving a disk 79.
- Sections 73 are joined together to form cylindrical pad blank 71 by inserting disk 79 into notch 75, inserting a screw 81 through a hole 80 in disk 79, and threading screw 81 into hole 78 to rigidly secure disk 79.
- sections 73 are assembled together by inserting a protruding end 85 of each disk 79 into the remaining notch 87 on an adjacent section 73 until the complete pad blank 71 is assembled.
- Disks 79 keep sections 73 slightly spaced apart by slots 83 and transmit torque from one section 73 to another. Without disks 79, slippage of sections 73 relative to each other might occur.
- Pad blank 71 can then be loaded into chuck 1 1 to be machined by boring the three sections 73 simultaneously. After machining is completed, pad blank 71 can be disassembled into pads 73 by reversing the order of assembly stated above. Referring to Figures 6 and 7, in another operation, face 38 of each top jaw
- Truing ring 91 is manufactured so that when clamped by jaws 31 in chuck 1 1 with the proper pressure, a light cut is sufficient to true faces 38. Truing ring 91 is clamped between top jaws 31 without pads 37 installed.
- Truing ring 91 locates within a recess 96 on face 38 that will not be in contact with pad 37 when pad 37 is installed. Only the contact surfaces 95 and 97 above and below recess 96 need be trued.
- truing ring 91 is configured to allow a cutting tool 93 to cut on upper portion 95 of face 38 while top jaws 31 are clamped under hydraulic pressure simulating actual conditions of use. Cutting tool 93 may also extend through truing ring 91 in order to cut lower portion 97 of face 38. Once the trimming operation is complete, truing ring 91 can be removed, and pads 37 should seat properly on faces 38.
- Chuck 1 1 1 has a cylindrical body 1 1 3 and a plurality of top jaws 1 31 that are each removably secured to a master jaw 1 21 .
- Master jaws 1 21 radially slide along a top side 1 1 7 of body 1 1 3.
- the words "top” and “bottom” are used only for convenience and do not refer to actual upper and lower surfaces.
- Each master jaw 1 21 has a row of grooves 1 25 on a top side which engage mating grooves 1 35 on a bottom side 1 33 of top jaw 1 31 .
- master jaw 1 21 engages top jaw 1 31 with a tongue and groove arrangement.
- Top jaw 1 31 is removably secured to master jaw 121 with bolts (not shown) that extend through holes 145 in top jaw 131. The bolts thread into receptacles (not shown) in master jaw 121 that align with holes 145.
- top jaw 131 has a longitudinal axis 132 and a bottom side 133 that is parallel to axis 132.
- Top jaw 131 has a replaceable insert
- Insert 137 that has two symmetrical, rearward-facing shoulders 136 (Figure 9). Each shoulder 136 lands on upper and lower, forward-facing shoulders 142 located on a face 138 of top jaw 131 such that insert 137 contacts face 138 at four locations ( Figures 9 and 11). As shown in Figure 9, insert 137 has a width that is less that a width of face 138 such that portions of face 138 and shoulders 142 remain exposed. A central tongue or tab 134 extends rearward between shoulders 136 and into a groove 144 in face 138. Tab 134 does not make contact with groove 144. Insert 137 is removably secured to face 138 with a clamp screw 139 ( Figure 10).
- Screw 139 extends through a hole 140 which is located in the forward one of holes 145 and is parallel to axis 132.
- Insert 137 is shown with a flat face 146 which will be machined to a desired geometry as described below. Insert 137 is used to provide a contact surface to hold a workpiece to be machined. Inserts 137 can be for round stock, hex stock, square stock, or can be custom made to other configurations. Referring to Figures 10 and 11, each top jaw 131 has an elliptical aperture or recess 141 that is at an acute angle relative to axis 132. Top jaw 131 has a slot 143 that is perpendicular to axis 132 and connects recess 141 with bottom side 133.
- Top jaw 131 has two threaded holes 151 that are parallel to axis 132. Holes 151 extend from a rearward end of top jaw 131 toward forward face 138. Holes 151 extend through slot 143 and a slot wall 162, but holes 151 do not completely penetrate top jaw 131.
- Each hole 151 contains a set screw 153 and a loading pin 155 whose combined length is less than the length of hole 151.
- Top jaw 1 31 also contains two small threaded holes 1 56 with set screws 1 58 that are with concentric with holes 1 51 . Screws 1 58 may be removed in order to clean out backstops 1 63 or to knock out pins 1 51 .
- the positions of pins 1 55 are set to provide a desired clearance between backstop 1 63 and the ends of pins 1 55. This determination adjusts the effective width of slot 143 and, thus, the amount of allowed deflection.
- the amount of deflection required for each job is a function of the material of the workpiece, the chuck hydraulic pressure, and the condition of the chuck.
- pins 1 55 are loosened and spaced apart from backstop 1 63.
- a workpiece is "preloaded" in chuck 1 1 1 by clamping top jaws 1 31 on the workpiece at the desired pressure.
- pins 1 55 are tightened against backstop 1 63 while top jaws 1 31 are clamped on the workpiece. This is done to limit deflection of forward face
- Top jaw 1 31 may also be effectively locked from all motion while under load by simply locking pins 1 55 against backstop 1 63 prior to applying any load.
- forward face 1 38 of top jaw 1 31 can flex in a forward direction from the clamped position. The forward ends of pins 1 55 will now be spaced away from backstop 1 63.
- forward end 1 61 is limited by the width of slot 1 43 and the placement of pins 1 55 as pins 1 55 will eventually contact or bottom out on backstop 1 63.
- Pins 1 55 may be positioned to provide a desired gap between pins 1 55 and backstop 1 63. In this position, forward end 1 61 will be able to deflect only until pins 1 55 contact backstop 1 63 since screws 1 53 will stop further rearward movement of pins 1 55 by acting as a hard stop.
- recess 141 and slot 143 allow a forward end 1 61 of top jaw 1 31 to deflect relative to bottom side 1 33.
- zone 1 30 is the area of top jaw 1 31 which undergoes bending to achieve the required compliant behavior. This motion allows insert 1 37 to maintain even pressure on the workpiece instead of cocking, thereby minimizing deflection of the workpiece during machining. In this motion, zone 130 acts like a spring or a hinge. Faces 146 of inserts 137 may be machined for matching a particular workpiece shape. Referring to Figures 12-14, a boring ring 165 having three, equally spaced apart lugs 166 is shown. Lugs 166 are located on a lower side of boring ring 165.
- Each lug 166 has a pair of small, inward-facing shoulders 167 which extend radially outward from a lower end.
- An arcuate side wall 167a extends radially outward from each shoulder 167 to reduce stress in boring ring 165 while it is under load.
- a central hole 168 is formed in boring ring 165.
- the outer edge 167a of each lug 167 does not extend completely to the outer diameter 165a of ring 165, resulting in an annular band as shown in Figure 14.
- Boring ring 165 is installed on chuck 111 with top jaws 131 located between lugs 166. As chuck 111 is clamped, top jaws 131 are moved inward, allowing upper shoulders 142 on top jaws 131 to clamp tightly against shoulders 167. Boring ring 165 resists the clamping load of each top jaw 131 by distributing the load to the other top jaws 131. Chuck 111 is then rotated so that the faces 146 of inserts 137 may be machined while boring ring 165 remains untouched.
- Figure 12 shows faces 146 after machining while Figures 8-11 show faces 146 before machining.
- FIG. 15 Another embodiment of the inserts is shown in Figure 15.
- a polygonal insert blank 171 is loaded into top jaws 131.
- Insert blank 171 is a bar with three flat outer walls 172 which has been previously cut into a number of congruent sections 173 equal to the number of top jaws 131.
- each section 173 has rectangular, paired notches 175, 176 cut into its outer wall 177.
- Section 173 also has a threaded hole 178 at outer wall 177 which extends radially inward.
- Each notch 175 functions as a slot for closely receiving a key 179.
- Sections 173 are joined together to form insert blank 171 by inserting key 179 into notch 176, inserting a screw 181 through a hole 180 in key 179, and threading screw 181 into hole 178 to rigidly secure key 179.
- sections 173 are assembled together by inserting a protruding end 185 of each key 179 into the paired notch 175 on an adjacent section 173 until the complete insert blank 171 is assembled.
- Keys 179 are provided to keep sections 173 slightly spaced apart by slots 183 while undergoing
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU49141/97A AU4914197A (en) | 1996-10-23 | 1997-10-17 | Compliant top jaws with machinable inserts |
EP97911865A EP1007258A1 (en) | 1996-10-23 | 1997-10-17 | Compliant top jaws with machinable inserts |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/735,674 US5791661A (en) | 1996-10-23 | 1996-10-23 | Compliant chuck jaws |
US08/735,674 | 1996-10-23 | ||
US4373097P | 1997-04-16 | 1997-04-16 | |
US60/043,730 | 1997-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998017429A1 true WO1998017429A1 (en) | 1998-04-30 |
Family
ID=26720769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/019096 WO1998017429A1 (en) | 1996-10-23 | 1997-10-17 | Compliant top jaws with machinable inserts |
Country Status (4)
Country | Link |
---|---|
US (1) | US5979914A (en) |
EP (1) | EP1007258A1 (en) |
AU (1) | AU4914197A (en) |
WO (1) | WO1998017429A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2420255A1 (en) * | 2013-04-30 | 2013-08-22 | Danobat S. Coop. | Attenuating device of vibrations produced in tubes during its machining (Machine-translation by Google Translate, not legally binding) |
US11850667B2 (en) | 2020-10-28 | 2023-12-26 | Bradley D. O'Connell | Chuck jaw stopping mechanism |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29908380U1 (en) * | 1999-05-12 | 1999-07-29 | Schunk Gmbh & Co Kg | Chuck for clamping in particular rod-shaped material and clamping jaw therefor |
USD775248S1 (en) * | 2015-10-06 | 2016-12-27 | Roly Llc | Pipe chuck teeth |
CN106346033A (en) * | 2016-10-28 | 2017-01-25 | 成都欧珀琅精密工具有限公司 | Hydraulic control three-jaw chuck device with function of preventing blockage of iron chips |
USD931918S1 (en) * | 2020-02-13 | 2021-09-28 | Roly Llc | Pipe chuck teeth |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572013A (en) * | 1947-11-28 | 1951-10-23 | Walton W Cushman | Chuck jaw gauge |
US3160042A (en) * | 1962-04-18 | 1964-12-08 | Nu Line Ind Inc | Jaw holding device |
US3322434A (en) * | 1964-07-16 | 1967-05-30 | Jack P Mcclung | Top jaw holders and top jaws therefor |
US3679221A (en) * | 1970-06-11 | 1972-07-25 | Alvin J Behrens | Chuck jaw insert and assembly |
US4046390A (en) * | 1976-02-27 | 1977-09-06 | The Dunham Tool Company, Inc. | Dead stop step chuck |
US4221391A (en) * | 1978-11-06 | 1980-09-09 | Dutton Anthony E | Multiple segmented chuck jaw |
US4353561A (en) * | 1980-08-26 | 1982-10-12 | The United States Of America As Represented By The Unites States Department Of Energy | Self-aligning lathe chuck jaws |
US5015003A (en) * | 1988-08-03 | 1991-05-14 | Kennametal Inc. | Top jaw assembly with replaceable work holding pads |
US5236207A (en) * | 1992-05-28 | 1993-08-17 | Kennametal Inc. | Segmented adjustable top jaw for a chuck and method for using the same |
US5664793A (en) * | 1996-02-21 | 1997-09-09 | Engibarov; Eddy | Quick-change chuck jaws |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2773406A (en) * | 1953-11-23 | 1956-12-11 | Dachauer Wilhelm | Auxiliary jaws for vises |
US3190666A (en) * | 1963-08-06 | 1965-06-22 | Tesan Tool Mfg Company | Holder and jaw inserts comprising the top jaw for a chuck |
US4023815A (en) * | 1976-01-12 | 1977-05-17 | The Dunham Tool Company, Inc. | Collet chuck assembly for custom applications |
US5791661A (en) * | 1996-10-23 | 1998-08-11 | Reyes; Peter A. | Compliant chuck jaws |
-
1997
- 1997-10-17 EP EP97911865A patent/EP1007258A1/en not_active Withdrawn
- 1997-10-17 AU AU49141/97A patent/AU4914197A/en not_active Abandoned
- 1997-10-17 WO PCT/US1997/019096 patent/WO1998017429A1/en not_active Application Discontinuation
-
1998
- 1998-04-10 US US09/058,634 patent/US5979914A/en not_active Expired - Fee Related
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572013A (en) * | 1947-11-28 | 1951-10-23 | Walton W Cushman | Chuck jaw gauge |
US3160042A (en) * | 1962-04-18 | 1964-12-08 | Nu Line Ind Inc | Jaw holding device |
US3322434A (en) * | 1964-07-16 | 1967-05-30 | Jack P Mcclung | Top jaw holders and top jaws therefor |
US3679221A (en) * | 1970-06-11 | 1972-07-25 | Alvin J Behrens | Chuck jaw insert and assembly |
US4046390A (en) * | 1976-02-27 | 1977-09-06 | The Dunham Tool Company, Inc. | Dead stop step chuck |
US4221391A (en) * | 1978-11-06 | 1980-09-09 | Dutton Anthony E | Multiple segmented chuck jaw |
US4353561A (en) * | 1980-08-26 | 1982-10-12 | The United States Of America As Represented By The Unites States Department Of Energy | Self-aligning lathe chuck jaws |
US5015003A (en) * | 1988-08-03 | 1991-05-14 | Kennametal Inc. | Top jaw assembly with replaceable work holding pads |
US5236207A (en) * | 1992-05-28 | 1993-08-17 | Kennametal Inc. | Segmented adjustable top jaw for a chuck and method for using the same |
US5664793A (en) * | 1996-02-21 | 1997-09-09 | Engibarov; Eddy | Quick-change chuck jaws |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2420255A1 (en) * | 2013-04-30 | 2013-08-22 | Danobat S. Coop. | Attenuating device of vibrations produced in tubes during its machining (Machine-translation by Google Translate, not legally binding) |
US11850667B2 (en) | 2020-10-28 | 2023-12-26 | Bradley D. O'Connell | Chuck jaw stopping mechanism |
Also Published As
Publication number | Publication date |
---|---|
EP1007258A1 (en) | 2000-06-14 |
US5979914A (en) | 1999-11-09 |
AU4914197A (en) | 1998-05-15 |
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