GB1190810A - Improvements in or relating to Gear Systems through which a Shaft is Driven - Google Patents

Improvements in or relating to Gear Systems through which a Shaft is Driven

Info

Publication number
GB1190810A
GB1190810A GB3048267A GB3048267A GB1190810A GB 1190810 A GB1190810 A GB 1190810A GB 3048267 A GB3048267 A GB 3048267A GB 3048267 A GB3048267 A GB 3048267A GB 1190810 A GB1190810 A GB 1190810A
Authority
GB
United Kingdom
Prior art keywords
gears
shaft
gear
screw
clutch
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
GB3048267A
Inventor
Arthur Jose Firth
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.)
Colchester Lathe Co Ltd
Original Assignee
Colchester Lathe Co 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 Colchester Lathe Co Ltd filed Critical Colchester Lathe Co Ltd
Priority to GB3048267A priority Critical patent/GB1190810A/en
Publication of GB1190810A publication Critical patent/GB1190810A/en
Expired legal-status Critical Current

Links

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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/46—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio
    • B23Q5/48—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously with variable speed ratio by use of toothed gears
    • 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
    • B23Q2705/00—Driving working spindles or feeding members carrying tools or work
    • B23Q2705/10—Feeding members carrying tools or work
    • B23Q2705/18—Feeding other members supporting tools also feeding working spindles supports
    • B23Q2705/20—Gear boxes for thread cutting lathes with a lead screw

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)

Abstract

1,190,810. Screw-cutting lathes. COLCHESTER LATHE CO. Ltd. 30 Sept., 1968 [3 July, 1967], No. 30482/67. Heading B3T. [Also in Division F2] A gear-box for a screw-cutting lathe provides a ratio between two shafts of 288: 7315 (very closely approximating to 1: 25À4) so that English and metric screw-threads can be cut on the same machine. The gear-box includes selectable auxiliary step-up or step-down gearing so that a range of multiples or fractions of the basic ratio can be obtained. In the drawings, the ringed numbers indicate the teeth numbers on respective gear-wheels. In Fig. 1, a lathe spindle 1 drives a gear-box input shaft 4 via gears 2, 3, 5. For metric threads, a clutch 7, 8 is engaged and a 4 T.P.I. lead-screw 14 is driven via a shaft 9, a shaft 16, and gears 19, 15. Either gear 18 is slidable to mesh any one of gears 20, or shaft 16 carries an array of gears (not shown), each having a number of teeth which is a multiple of 11, selectively driven by the gears 20. For English threads, a clutch 11, 12 is engaged, and gears 6, 17 meshed, to drive the lead-screw 14 via gears 6, 17, the shaft 16, the shaft 9, and the clutch 11, 12 (Fig. 2, not shown). To cut a 19 T.P.I. pipe thread, clutches 7, 8 and 11, 12 are both engaged for a straight through drive. The leadscrew 14 moves a nut 21 connected to a threadcutting tool.
GB3048267A 1967-07-03 1967-07-03 Improvements in or relating to Gear Systems through which a Shaft is Driven Expired GB1190810A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3048267A GB1190810A (en) 1967-07-03 1967-07-03 Improvements in or relating to Gear Systems through which a Shaft is Driven

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3048267A GB1190810A (en) 1967-07-03 1967-07-03 Improvements in or relating to Gear Systems through which a Shaft is Driven

Publications (1)

Publication Number Publication Date
GB1190810A true GB1190810A (en) 1970-05-06

Family

ID=10308361

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3048267A Expired GB1190810A (en) 1967-07-03 1967-07-03 Improvements in or relating to Gear Systems through which a Shaft is Driven

Country Status (1)

Country Link
GB (1) GB1190810A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418766A (en) * 1979-07-25 1983-12-06 Black & Decker Inc. Compact multi-speed hammer-drill
US4546661A (en) * 1984-01-09 1985-10-15 Dana Corporation Countershaft driven power take-off

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418766A (en) * 1979-07-25 1983-12-06 Black & Decker Inc. Compact multi-speed hammer-drill
US4546661A (en) * 1984-01-09 1985-10-15 Dana Corporation Countershaft driven power take-off

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years