GB1217245A - Improvements in machine tools - Google Patents

Improvements in machine tools

Info

Publication number
GB1217245A
GB1217245A GB365968A GB365968A GB1217245A GB 1217245 A GB1217245 A GB 1217245A GB 365968 A GB365968 A GB 365968A GB 365968 A GB365968 A GB 365968A GB 1217245 A GB1217245 A GB 1217245A
Authority
GB
United Kingdom
Prior art keywords
spindle
worm
wheel
piston
engaging
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
GB365968A
Inventor
Edoardo Augusto Faccio
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.)
GEORGE H ALEXANDER MACHINERY L
Original Assignee
GEORGE H ALEXANDER MACHINERY L
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 GEORGE H ALEXANDER MACHINERY L filed Critical GEORGE H ALEXANDER MACHINERY L
Priority to GB365968A priority Critical patent/GB1217245A/en
Publication of GB1217245A publication Critical patent/GB1217245A/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
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
    • B23Q5/145—Mechanical drives with means for varying the speed ratio step-by-step fluid-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turning (AREA)

Abstract

1,217,245. Controlling spindle speeds. GEORGE H. ALEXANDER MACHINERY Ltd. 24 Jan., 1968, No. 3659/68. Heading B3T. In a machine tool such as a lathe in which the spindle 6 is driven from a motor-powered shaft 1 through selectable gear trains 3, 5 or 2, 4 by way of a clutch assembly 7, 8 and 9, further means for driving and controlling the speed of the spindle 6 comprises a worm and wheel 11, 10 respectively mounted on the shaft and spindle 1 and 6, control means being provided for sequentially disengaging the clutch assembly 7, 8, 9, and engaging a dog clutch 12 to provide slow speed rotation of the machine spindle 6 by way of the worm and wheel. The control means is in the form of a piston and cylinder unit 14, 13, the piston-rod being connected to the movable part of the dog clutch 12 by a member 18 and, by rack and pinion means 15, 16, to a cam member 17. The movement of the piston effects, in sequence, movement of the cam member 17 to disengage the clutch assembly 7, 8, 9 by cam 19 engaging with a link, actuation of a brake 21 on the spindle 6 by a cam face 20 engaging therewith and engagement of the dog clutch to initiate the spindle drive through the worm and wheel.
GB365968A 1968-01-24 1968-01-24 Improvements in machine tools Expired GB1217245A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB365968A GB1217245A (en) 1968-01-24 1968-01-24 Improvements in machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB365968A GB1217245A (en) 1968-01-24 1968-01-24 Improvements in machine tools

Publications (1)

Publication Number Publication Date
GB1217245A true GB1217245A (en) 1970-12-31

Family

ID=9762504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB365968A Expired GB1217245A (en) 1968-01-24 1968-01-24 Improvements in machine tools

Country Status (1)

Country Link
GB (1) GB1217245A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999012700A1 (en) * 1997-09-09 1999-03-18 Maschinenfabrik Berthold Hermle Ag Rotating driving unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999012700A1 (en) * 1997-09-09 1999-03-18 Maschinenfabrik Berthold Hermle Ag Rotating driving unit
US6206157B1 (en) 1997-09-09 2001-03-27 Maschinenfabrik Berthold Hermle Ag Rotating driving unit

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