GB1064785A - Improvements in or relating to automatic positioning systems - Google Patents

Improvements in or relating to automatic positioning systems

Info

Publication number
GB1064785A
GB1064785A GB50803/63A GB5080363A GB1064785A GB 1064785 A GB1064785 A GB 1064785A GB 50803/63 A GB50803/63 A GB 50803/63A GB 5080363 A GB5080363 A GB 5080363A GB 1064785 A GB1064785 A GB 1064785A
Authority
GB
United Kingdom
Prior art keywords
detector
motor
pulses
output
difference
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
GB50803/63A
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of GB1064785A publication Critical patent/GB1064785A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • 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
    • G05B19/39—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 a combination of the means covered by at least two of the preceding groups G05B19/21, G05B19/27 and G05B19/33
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Drilling And Boring (AREA)

Abstract

1,064,785. Electric selective signalling. FUJITSU Ltd. Dec. 23, 1963 [Dec. 24, 1962], No. 50803/63. Heading G4H. A system for positioning a member positions a detector relative to the member and then positions the detector and member together, compensation means receiving inputs from the two positioning means, and delivering an output to the second positioning means when appropriate. The table (1) of a lathe or drilling machine is positioned with respect to the machine bed (2) by a motor or motors (4), a detector (5) being mounted on the table (1) to sense photo-electrically the magnified image of a scale (6) fixed on the machine bed (2). The photo-electric element in the detector (5) can be moved relative to the table (1) by a motor (10) through gears (11, 9) such movement being accompanied by the production of pulses (at 12), These pulses are counted (18) and the count compared (16) with binary signals derived from the lowest two digits of the required position as set up in decimal form on dials (14). The difference output of the comparator (16) energizes the motor (10). When this difference falls to zero, the table (1) is driven, the detector (5) producing pulses which are counted (22), the count being compared (20) with binary signals derived from the other (five) decimal digits set up on the dials (14). The (difference) output of the comparator (20) drives the table motor (4) until the desired position is reached, the speed of the table (1) being reduced near the end-point. A circuit (23), controlled by the outputs of the comparators (16, 20) causes Œ1 or 0 to be added to the second counter (22) as appropriate to avoid errors. The table (1) may be driven in either direction, the counters (18, 22) being bi-directional. Gates (17, 21) controlled by the comparators (16, 20) control direction of counting.
GB50803/63A 1962-12-24 1963-12-23 Improvements in or relating to automatic positioning systems Expired GB1064785A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5862862 1962-12-24

Publications (1)

Publication Number Publication Date
GB1064785A true GB1064785A (en) 1967-04-12

Family

ID=13089831

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50803/63A Expired GB1064785A (en) 1962-12-24 1963-12-23 Improvements in or relating to automatic positioning systems

Country Status (1)

Country Link
GB (1) GB1064785A (en)

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