GB1293933A - An improved chuck - Google Patents

An improved chuck

Info

Publication number
GB1293933A
GB1293933A GB1311869A GB1311869A GB1293933A GB 1293933 A GB1293933 A GB 1293933A GB 1311869 A GB1311869 A GB 1311869A GB 1311869 A GB1311869 A GB 1311869A GB 1293933 A GB1293933 A GB 1293933A
Authority
GB
United Kingdom
Prior art keywords
jaws
shaft
scroll member
gear
rotates
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
Application number
GB1311869A
Inventor
John Peter Boneham
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.)
Boneham & Turner Ltd
Original Assignee
Boneham & Turner Ltd
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 Boneham & Turner Ltd filed Critical Boneham & Turner Ltd
Priority to GB1311869A priority Critical patent/GB1293933A/en
Publication of GB1293933A publication Critical patent/GB1293933A/en
Expired legal-status Critical Current

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
    • B23B31/16004—Jaws movement actuated by one or more spiral grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2260/00—Details of constructional elements
    • B23B2260/008—Bearings

Abstract

1293933 Chucks BONEHAM & TURNER Ltd 25 March 1970 [12 March 1969] 13118/69 Heading B3B A chuck has a plurality of jaws 11 which are pre-settable to the size of a workpiece batch by the manual operation of a scroll member 15, the final clamping and releasing of a workpiece being achieved by an operating mechanism, which may be power actuated pneumatically or hydraulically, which partially rotates the scroll member and moves the jaws through an amplitude of movement less that the total range of travel of the jaws. The jaws 11 are manually pre-set by rotating one of a plurality of stub shafts 6 and gears 34 to rotate the scroll member 15. The final clamping is achieved by axial movement of a shaft 25 having helical splines and which rotates a shaft 24. The shaft 24 rotates a gear 28 to rotate the scroll member 15. The drive from the shaft 24 to the gear 28 may be unlocked by manually rotating a cam ring 20 relative to a thrust plate 8 to allow springs 17 to separate the gear 28 from the gear 34 on the stub shafts 6. This allows adjustment to the pre-setting of the jaws 11. In an alternative embodiment (Fig. 3, not shown) an internally splined member is attached direct to the scroll member. The axially movable shaft (48) includes a helically splined portion for causing rotation of the scroll member, and a portion having straight splines (49). A screw operated key member (50) engages with these splines to rotationally lock or unlock the shaft (48) relative to the chuck body to allow manual adjustment to pre-set the jaws 11.
GB1311869A 1969-03-12 1969-03-12 An improved chuck Expired GB1293933A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1311869A GB1293933A (en) 1969-03-12 1969-03-12 An improved chuck

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1311869A GB1293933A (en) 1969-03-12 1969-03-12 An improved chuck

Publications (1)

Publication Number Publication Date
GB1293933A true GB1293933A (en) 1972-10-25

Family

ID=10017155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1311869A Expired GB1293933A (en) 1969-03-12 1969-03-12 An improved chuck

Country Status (1)

Country Link
GB (1) GB1293933A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164590A (en) * 1983-10-08 1986-03-26 Roehm Guenter H Drilling chuck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2164590A (en) * 1983-10-08 1986-03-26 Roehm Guenter H Drilling chuck

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees