JPS56132510A - Digital indicator for feed amount of machine tool and the like - Google Patents

Digital indicator for feed amount of machine tool and the like

Info

Publication number
JPS56132510A
JPS56132510A JP3662980A JP3662980A JPS56132510A JP S56132510 A JPS56132510 A JP S56132510A JP 3662980 A JP3662980 A JP 3662980A JP 3662980 A JP3662980 A JP 3662980A JP S56132510 A JPS56132510 A JP S56132510A
Authority
JP
Japan
Prior art keywords
backlash
feed screw
circuit
feeding
counter
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.)
Pending
Application number
JP3662980A
Other languages
Japanese (ja)
Inventor
Toru Nakaoki
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.)
Mutoh Industries Ltd
Original Assignee
Mutoh Industries 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 Mutoh Industries Ltd filed Critical Mutoh Industries Ltd
Priority to JP3662980A priority Critical patent/JPS56132510A/en
Priority to US06/239,482 priority patent/US4528682A/en
Priority to DE3109704A priority patent/DE3109704C2/en
Priority to GB8108144A priority patent/GB2073880B/en
Publication of JPS56132510A publication Critical patent/JPS56132510A/en
Pending 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
    • G05B19/21—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 incremental digital measuring device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • 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
    • G05B2219/41—Servomotor, servo controller till figures
    • G05B2219/41068—Measuring and feedback

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Automation & Control Theory (AREA)
  • Optical Transform (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

PURPOSE:To indicate a feed amount which is kept from influence due to backlash, by a method wherein an encoder pulse generated resulting from the rotation of a feed screw is computed by eliminating an error produced due to backlash stored in a preset counter. CONSTITUTION:A sine waveform, which is different in advance and delay and 90 deg. different in phase, is detected according to the turning direction by means of a slit plate 30 and the like of an encoder 34 turning in synchronism with a feed screw, and a decision circuit 38 decides the rotation direction of the feed screw. In the case of feeding in the clockwise direction through the circuit 38, a reversible counter 44 up-computes an encode pulse, and in the case of feeding in the reverse direction, it down-computes the pulse. Through the reverse turning of the feed screw after feeding in the clockwise direction is completed, a backlash amount passing through a circuit 38 and stored in a preset counter 42 is reduced and a circuit 40 is closed until the backlash is eliminated. Thus, a feed amount of a machine tool, based on computation of the counter 44 kept from influence due to the backlash, is indicated in a digital manner in an indicator 14.
JP3662980A 1980-03-14 1980-03-22 Digital indicator for feed amount of machine tool and the like Pending JPS56132510A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP3662980A JPS56132510A (en) 1980-03-22 1980-03-22 Digital indicator for feed amount of machine tool and the like
US06/239,482 US4528682A (en) 1980-03-14 1981-03-02 Digital measuring instruments
DE3109704A DE3109704C2 (en) 1980-03-14 1981-03-13 Measuring device, in particular digital measuring device
GB8108144A GB2073880B (en) 1980-03-14 1981-03-16 Digital measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3662980A JPS56132510A (en) 1980-03-22 1980-03-22 Digital indicator for feed amount of machine tool and the like

Publications (1)

Publication Number Publication Date
JPS56132510A true JPS56132510A (en) 1981-10-16

Family

ID=12475115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3662980A Pending JPS56132510A (en) 1980-03-14 1980-03-22 Digital indicator for feed amount of machine tool and the like

Country Status (1)

Country Link
JP (1) JPS56132510A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60197382A (en) * 1984-03-22 1985-10-05 新日本製鐵株式会社 Sensor scanning type measuring method utilizing multi-joint robot
JPS61192452A (en) * 1985-02-21 1986-08-27 Fanuc Ltd Location monitoring method
JPH0531650A (en) * 1991-07-25 1993-02-09 Nifuretsukusu:Kk Counter means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60197382A (en) * 1984-03-22 1985-10-05 新日本製鐵株式会社 Sensor scanning type measuring method utilizing multi-joint robot
JPS61192452A (en) * 1985-02-21 1986-08-27 Fanuc Ltd Location monitoring method
JPH0418986B2 (en) * 1985-02-21 1992-03-30 Fanuc Ltd
JPH0531650A (en) * 1991-07-25 1993-02-09 Nifuretsukusu:Kk Counter means

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