GB1226392A - - Google Patents

Info

Publication number
GB1226392A
GB1226392A GB1226392DA GB1226392A GB 1226392 A GB1226392 A GB 1226392A GB 1226392D A GB1226392D A GB 1226392DA GB 1226392 A GB1226392 A GB 1226392A
Authority
GB
United Kingdom
Prior art keywords
error
encoder
range
inch
slide
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
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 filed Critical
Publication of GB1226392A publication Critical patent/GB1226392A/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
    • G05B19/27—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 absolute digital measuring device
    • 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
    • G05B2219/35—Nc in input of data, input till input file format
    • G05B2219/35232—Bcd

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)
  • Automatic Control Of Machine Tools (AREA)

Abstract

1,226,392. Position encoders. WARNER & SWASEY CO. 26 June, 1968 [5 Sept., 1967], No. 30562/68. Heading G4H. In a system for encoding the position of a movable member, errors in the encoder are compensated by an error signal source 17 which gives signals representing the error in different ranges of position; the error signal being subtracted from the indicated signal to give corrected position values. The movable member 11 is the slide of a machine tool and is displaced by a lead-screw 10. The binary encoder 12 connected to the lead-screw may be as described in Specification 1,190,845. The binary output of the encoder is converted to binary-codeddecimal by decoder 14. If the slide has a movement of 20 inches, the error signal source 17, which may be a record card, has 20 sections, the first giving the mean error in the range 0-1 inch, the second giving the mean error in the range 1-2 inches and so on. The range in which the slide is working is detected at 15 and a corresponding one of 20 gates 16 is opened to pass the appropriate error signal to the subtract circuit 19. If the total error of the lead-screw is o.oo3 inch, the maximum error in each range is about 0À0001 inch. In a second subtractor 24 a zero offset value is subtracted to that the encoder indicates the displacement from any selected initial position. The signals are converted to decimal form and displayed at 28.
GB1226392D 1967-09-05 1968-06-26 Expired GB1226392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66533767A 1967-09-05 1967-09-05

Publications (1)

Publication Number Publication Date
GB1226392A true GB1226392A (en) 1971-03-24

Family

ID=24669704

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1226392D Expired GB1226392A (en) 1967-09-05 1968-06-26

Country Status (4)

Country Link
CA (1) CA925183A (en)
DE (1) DE1798050B2 (en)
FR (1) FR1574525A (en)
GB (1) GB1226392A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613888A (en) * 2017-10-04 2019-04-12 发那科株式会社 Numerical control device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761906A (en) * 1980-09-30 1982-04-14 Fanuc Ltd Compensating system of position error
DE3201005A1 (en) * 1982-01-15 1983-07-28 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut DEVICE FOR ERROR CORRECTION IN POSITION MEASURING SYSTEMS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109613888A (en) * 2017-10-04 2019-04-12 发那科株式会社 Numerical control device
CN109613888B (en) * 2017-10-04 2023-05-05 发那科株式会社 Numerical controller

Also Published As

Publication number Publication date
DE1798050A1 (en) 1971-04-08
CA925183A (en) 1973-04-24
FR1574525A (en) 1969-07-11
DE1798050B2 (en) 1978-02-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee