GB674416A - Improved chucking mechanism - Google Patents

Improved chucking mechanism

Info

Publication number
GB674416A
GB674416A GB29261/50A GB2926150A GB674416A GB 674416 A GB674416 A GB 674416A GB 29261/50 A GB29261/50 A GB 29261/50A GB 2926150 A GB2926150 A GB 2926150A GB 674416 A GB674416 A GB 674416A
Authority
GB
United Kingdom
Prior art keywords
chuck
valve
pair
cap
collets
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
GB29261/50A
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.)
Devlieg Bullard Inc
Original Assignee
National Acme Co
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
Priority to US25033A priority Critical patent/US2569093A/en
Priority to DEN3110A priority patent/DE920647C/en
Application filed by National Acme Co filed Critical National Acme Co
Priority to GB29261/50A priority patent/GB674416A/en
Publication of GB674416A publication Critical patent/GB674416A/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
    • B23B31/20—Longitudinally-split sleeves, e.g. collet chucks
    • B23B31/201—Characterized by features relating primarily to remote control of the gripping means
    • B23B31/207—Characterized by features relating primarily to remote control of the gripping means using mechanical transmission through the spindle
    • B23B31/2072—Axially moving cam, fixed jaws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

674,416. Chucks; lathes. FAIRWEATHER, H. G. C. (National Acme Co.). Nov. 29, 1950, No. 29261/50. Class 83 (iii). A hollow-spindle chuck for gripping a workpiece, such as a valve 16, so that both ends can be machined simultaneously, comprises a pair of oppositely-facing collets 35, 37 closed by wedge means 48 forced between the opposed tapered ends 46, 47 of a pair of collet-engaging sleeves 42, 44. The chuck is fitted between a pair of end caps 27, 28 on the hub of a gear 11 which is journalled on a support 10 and is driven by a gear 12 on a spindle 13. The end caps each have a shoulder 30 against which a shoulder 38 on each collet is pressed by a spring 39 so that the collets do not move axially on the valve stem as they grip it, and one cap 28 can be screwed into various positions and locked by a screw 49 so that the distance between the shoulders 30, and therefore the gripping diameter, is varied; the cap 27 has also a flange 29 which engages the valve head to prevent bending. Balls 48 comprise the wedge means and, to close the chuck, are forced between the ends of the sleeves 42, 44 by a slidable spool 51 having a cam surface 52. One or more sliding pins 53 are fitted between each end cap and the spool and operate the chuck whilst it is rotating, being engaged by a rotating sleeve sliding over the head of the valve to open the chuck or by a rotating sleeve on the tool slide to close the chuck.
GB29261/50A 1948-05-04 1950-11-29 Improved chucking mechanism Expired GB674416A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US25033A US2569093A (en) 1948-05-04 1948-05-04 Chucking mechanism
DEN3110A DE920647C (en) 1950-11-12 1950-11-12 Chuck
GB29261/50A GB674416A (en) 1950-11-29 1950-11-29 Improved chucking mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29261/50A GB674416A (en) 1950-11-29 1950-11-29 Improved chucking mechanism

Publications (1)

Publication Number Publication Date
GB674416A true GB674416A (en) 1952-06-25

Family

ID=10288706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29261/50A Expired GB674416A (en) 1948-05-04 1950-11-29 Improved chucking mechanism

Country Status (1)

Country Link
GB (1) GB674416A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151166A (en) * 1983-12-12 1985-07-17 Honda Motor Co Ltd Work spindle devices
WO2007129073A1 (en) * 2006-05-09 2007-11-15 Gsi Group Limited Tool holder spindles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2151166A (en) * 1983-12-12 1985-07-17 Honda Motor Co Ltd Work spindle devices
WO2007129073A1 (en) * 2006-05-09 2007-11-15 Gsi Group Limited Tool holder spindles

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