US3697092A - Expanding arbor - Google Patents
Expanding arbor Download PDFInfo
- Publication number
- US3697092A US3697092A US127147A US3697092DA US3697092A US 3697092 A US3697092 A US 3697092A US 127147 A US127147 A US 127147A US 3697092D A US3697092D A US 3697092DA US 3697092 A US3697092 A US 3697092A
- Authority
- US
- United States
- Prior art keywords
- arbor
- adapter
- slots
- expander
- pin
- 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.)
- Expired - Lifetime
Links
Images
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
- B23B31/40—Expansion mandrels
- B23B31/404—Gripping the work or tool by jaws moving radially controlled by conical surfaces
- B23B31/4066—Gripping the work or tool by jaws moving radially controlled by conical surfaces using mechanical transmission through the spindle
-
- 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
- Y10T279/10—Expanding
- Y10T279/1037—Axially moving actuator
- Y10T279/1041—Wedge
- Y10T279/1054—Wedge with resilient means contacting nonresilient jaw
- Y10T279/1058—Constricting band, annulus, or clip
-
- 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
- Y10T279/3493—Protection means; e.g., cover, seal, overstress prevention, air blast
-
- 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
- Y10T82/00—Turning
- Y10T82/26—Work driver
- Y10T82/266—Mandrel
- Y10T82/268—Expansible
Definitions
- FIGURE is a longitudinal section through the expanding arbor.
- the expanding arbor assembly is intended for use with work rotating means such as a headstock and for this purpose the arbor is provided with a flange l2 apertured as indicated at 14 for attachment to the headstock.
- a cylindrical locator disc 16 is applied to the inner face of the flange l2 and is received in a shallow cylindrical recess 18 and attached to the arbor by the screws 20.
- the forward end of the arbor is reduced as indicated at 22 to form the work supporting portion, and a cylindrical opening 24 extends through the forward end of the arbor. Adjacent the forward end of the arbor there are provided a multiplicity, usually four, wedge receiving slots 26. Each of these slots receives a wedge 28 the inner surface of which is inclined as indicated at 30.
- An elongated cylindrical expander 32 is mounted for longitudinal movement in the cylindrical opening 24, the forward end of the expander being provided with slots having inclined bottom surfaces 34 engageable with the inclined inner edges of the wedges 28.
- Each of the wedges is provided with an outer recess 36 and spring means 38 are provided in the recesses urging the wedges 28 inwardly to seat the inclined inner edges thereof against the bottom surfaces of the slots at the forward end of the expander.
- the outer end of the elongated cylindrical opening 24 is closed by a plug 40 which may be formed of a synthetic rubber.
- the inner end of the expander 32 is connected to an adapter 42 which at its inner end has a threaded opening 44 for receiving the forward end of an actuating rod 46 adapted to connect the adapter to a piston and cylinder device.
- the forward end of the adapter 42 is provided with a cylindrical recess 48 which receives the inner end of the expander.
- the arbor is provided with an enlarged recess or chamber 50 in which the forward end of the adapter is longitudinally movable. Since the expanding arbor is intended to drive the workpiece supported thereby, it is essential that the entire assembly rotate as a unit.
- the keys or wedges 28, which are received in the slots 26 formed in the arbor, of course are required to rotate therewith.
- the inner edge portions of the wedges 28 are received in the inclined slots having the bottom walls 34 and accordingly, the expander 32 is required to rotate with the keys. It is desirable however, to provide driving means which prevents binding of the wedges 28 and this means takes the form of a pin 52 which extends through cylindrical openings 54 and 56 formed respectively in the inner end of the expander 32 and the outer end of the adapter 42.
- the ends of the pins extend into longitudinally elongated slots 58 formed in the arbor l0 and which communicate with enlarged cylindrical threaded openings 60 which receive threaded plugs 62.
- the dimensions of the slot 58 are such as to permit free longitudinal sliding movement of the assembly comprising the adapter, expander and pin, while preventing rotation between these parts and the arbor 10.
- Adapter 42 has a shoulder 66 so that its longitudinal movement is limited between a first position when this shoulder engages disc or plate 16 and a second position when the adapter bottoms in the chamber 50. This prevents damage to pin 52, or to spring 38 if the machine is cycled empty.
- the expander 32 In use, the expander 32 is retracted downwardly as viewed in the FIGURE, which permits the spring means 38 to contract the wedges 28. At this time a work piece is applied over the reduced outer end of the arbor and pressure is applied to move the expander 32 forwardly (upwardly in the FIGURE) in order to cam the wedges 28 outwardly into firm engagement with the opening in the work piece. Proper registration between the camming slots at the outer end of the expander and the slots 26 formed in the reduced outer end of the arbor is maintained by the pin 52, the outer ends of which are closely engaged by the sides of the elongated slots 58.
- An expanding arbor assembly for attachment to a rotatable headstock comprising an arbor having an elongated cylindrical opening therethrough, a plurality of slots adjacent the forward end of the arbor communicating with the cylindrical opening, elongated wedges slidable radially in the slots, spring means urging said wedges radially inwardly, the wedges having inclined inner edges, an elongated expander movable longitudinally in said cylindrical opening, the forward end of said expander having a plurality of slots in registration with the slots in the arbor, the slots in said expander having inclined bottom camming surfaces engaged with the inclined inner edges of said wedges, said arbor having an enlarged cylindrical chamber at its inner end concentric with the cylindrical opening therethrough, an adapter having a cylindrical portion slidable longitudinally in said chamber and having a cylindrical recess which receives the inner end of said expander, said adapter and expander having aligned cylindrical openings, a pin received in said last named openings coupling said pin and adapter, the ends of said pin extending laterally beyond the sides of
Abstract
Description
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12714771A | 1971-03-23 | 1971-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3697092A true US3697092A (en) | 1972-10-10 |
Family
ID=22428538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US127147A Expired - Lifetime US3697092A (en) | 1971-03-23 | 1971-03-23 | Expanding arbor |
Country Status (1)
Country | Link |
---|---|
US (1) | US3697092A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909021A (en) * | 1974-01-14 | 1975-09-30 | Mp Tool & Engineering Co | Collet chuck |
WO1983003562A1 (en) * | 1982-04-19 | 1983-10-27 | Gleason Works | Arbor for gear cutting machines |
FR2529491A1 (en) * | 1982-06-30 | 1984-01-06 | Arts Metiers Ecole Nale Superi | Device for coupling between an ejection plate and an actuating bar on a pressure casting machine |
US6149357A (en) * | 1998-11-17 | 2000-11-21 | The Gleason Works | Apparatus for securing workholding equipment to a machine tool |
CN102886539A (en) * | 2012-09-26 | 2013-01-23 | 山东白马永诚数控机床有限公司 | Expansion type quick change spring chuck |
US20170304907A1 (en) * | 2016-04-26 | 2017-10-26 | Westinghouse Electric Germany Gmbh | Clamping Apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462162A (en) * | 1966-11-10 | 1969-08-19 | Diebold Vulkan Werk W | Universal chuck |
US3492914A (en) * | 1968-02-12 | 1970-02-03 | Russell W Anthony | Expanding arbor |
-
1971
- 1971-03-23 US US127147A patent/US3697092A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3462162A (en) * | 1966-11-10 | 1969-08-19 | Diebold Vulkan Werk W | Universal chuck |
US3492914A (en) * | 1968-02-12 | 1970-02-03 | Russell W Anthony | Expanding arbor |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909021A (en) * | 1974-01-14 | 1975-09-30 | Mp Tool & Engineering Co | Collet chuck |
WO1983003562A1 (en) * | 1982-04-19 | 1983-10-27 | Gleason Works | Arbor for gear cutting machines |
FR2529491A1 (en) * | 1982-06-30 | 1984-01-06 | Arts Metiers Ecole Nale Superi | Device for coupling between an ejection plate and an actuating bar on a pressure casting machine |
US6149357A (en) * | 1998-11-17 | 2000-11-21 | The Gleason Works | Apparatus for securing workholding equipment to a machine tool |
CN102886539A (en) * | 2012-09-26 | 2013-01-23 | 山东白马永诚数控机床有限公司 | Expansion type quick change spring chuck |
US20170304907A1 (en) * | 2016-04-26 | 2017-10-26 | Westinghouse Electric Germany Gmbh | Clamping Apparatus |
US10335864B2 (en) * | 2016-04-26 | 2019-07-02 | Westinghouse Electric Germany Gmbh | Clamping apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ADD, INC., A MICHIGAN CORP.,STATELESS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LEAR SIEGLER, INC. A DE. CORP.;REEL/FRAME:004600/0061 Effective date: 19860530 Owner name: ADD, INC., A MICHIGAN CORP. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LEAR SIEGLER, INC. A DE. CORP.;REEL/FRAME:004600/0061 Effective date: 19860530 |
|
AS | Assignment |
Owner name: NATIONAL BROACH & MACHINE COMPANY, Free format text: CHANGE OF NAME;ASSIGNOR:ADD, INC.;REEL/FRAME:004664/0771 Effective date: 19860708 |
|
AS | Assignment |
Owner name: RAO, SURENDRA B. Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527 Effective date: 19880928 Owner name: FERRETT, JAMES A. Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527 Effective date: 19880928 Owner name: WILKINS, LEONARD J. Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527 Effective date: 19880928 Owner name: DONNELLY, JOHN T.; Free format text: SECURITY INTEREST;ASSIGNOR:NATIONAL BROACH & MACHINE COMPANY;REEL/FRAME:005033/0527 Effective date: 19880928 |
|
AS | Assignment |
Owner name: NATIONAL BROACH & MACHINE COMPANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SECURITY AGREEMENT RECORDED AT REEL 5033 FRAME 0527;ASSIGNORS:DONNELLY, JOHN T.;WILKINS, LEONARD J.;FERRETT, JAMES A.;AND OTHERS;REEL/FRAME:005639/0406 Effective date: 19910312 |