GB766788A - Improvements in and relating to automatic operation of machine tools - Google Patents

Improvements in and relating to automatic operation of machine tools

Info

Publication number
GB766788A
GB766788A GB2797652A GB2797652A GB766788A GB 766788 A GB766788 A GB 766788A GB 2797652 A GB2797652 A GB 2797652A GB 2797652 A GB2797652 A GB 2797652A GB 766788 A GB766788 A GB 766788A
Authority
GB
United Kingdom
Prior art keywords
selsyn
tool
ratchet
tape
shaft
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
GB2797652A
Inventor
Austyn Leslie Whiteley
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB2797652A priority Critical patent/GB766788A/en
Publication of GB766788A publication Critical patent/GB766788A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • G05B19/33—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device
    • G05B19/35—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device for point-to-point control
    • G05B19/351—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an analogue measuring device for point-to-point control the positional error is used to control continuously the servomotor according to its magnitude
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/33—Director till display
    • G05B2219/33268—D-A, A-D

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Boring (AREA)

Abstract

766,788. Drilling; programming for machinetools. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 4, 1954 [Nov. 6, 1952], No. 27976/52. Class 83 (3). A machine-tool has a tool and a work-table 3, Fig. 2, means for moving either the work-table or the tool in at least two directions x, y to a position prescribed by data in digital form, which is supplied, independently of the moving means, to the positioning-means, and means for sensing a difference between the position prescribed by the data and the position of the movable-member to cause the latter to be moved to a position in which the difference is zero. As applied to a boring-machine, the compound work-slide is adjusted by two leadscrews driven by electric-motors. Each leadscrew is driven by a motor 5 controlled through an amplidyne 12 and an amplifier 11 by the error-voltage between a selsyn 10, pre-set to correspond to the position to which the table 3 is to be moved, and a selsyn 7 operated by rack- and-pinion 8, 9, either the rack or the selsyn being fixed to the table. Coarse and fineadjustment selsyns geared to each other may be used as described in Specification 581,743, [Group XXXVIII], the controlling selsyns 10C and 10F being adjusted by the arrangement shown in Fig. 3 from digital information on a punched-tape 14. In this arrangement, the shaft 15 of the coarse selsyn 10C is rotated by a pawl-and-ratchet 22, 23 actuated by a solenoid 21 each time a switch 17 is closed by a hole in the left-hand column of the tape 14. Three further columns of holes close further switches 18-20, which adjust the shaft 16 of the fine selsyn 10F through ratchets 26, 31, 36, gears 33, 38, and differential-gears 32, 37. The information on the tape is in the decimal code, and the shaft 16 is therefore connected to the shaft 15 and the ratchet 31 by gear-ratios of 10: 1 and to the ratchet 36 by a gear-ration of 100: 1. The tape may also contain information to control the depth-of-feed of the tool and to control a turret holding the tools, or to deliver or indicate the correct tool to the operator. The ratchet-wheels 23, 26, 31, 36 are returned to zero-position before each positioning operation.
GB2797652A 1952-11-06 1952-11-06 Improvements in and relating to automatic operation of machine tools Expired GB766788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2797652A GB766788A (en) 1952-11-06 1952-11-06 Improvements in and relating to automatic operation of machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2797652A GB766788A (en) 1952-11-06 1952-11-06 Improvements in and relating to automatic operation of machine tools

Publications (1)

Publication Number Publication Date
GB766788A true GB766788A (en) 1957-01-23

Family

ID=10268283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2797652A Expired GB766788A (en) 1952-11-06 1952-11-06 Improvements in and relating to automatic operation of machine tools

Country Status (1)

Country Link
GB (1) GB766788A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955489A (en) * 1958-05-14 1960-10-11 Speco Inc Automatic drilling machine
DE1184180B (en) * 1961-06-28 1964-12-23 Scharmann & Co Positioning device for machine parts that can move in a straight line in relation to stationary machine parts, especially on machine tools
DE1188902B (en) * 1960-03-16 1965-03-11 Scharmann & Co Device for reversal drilling for horizontal drilling and milling machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955489A (en) * 1958-05-14 1960-10-11 Speco Inc Automatic drilling machine
DE1188902B (en) * 1960-03-16 1965-03-11 Scharmann & Co Device for reversal drilling for horizontal drilling and milling machines
DE1184180B (en) * 1961-06-28 1964-12-23 Scharmann & Co Positioning device for machine parts that can move in a straight line in relation to stationary machine parts, especially on machine tools

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