JPS57168830A - Numerical controller - Google Patents

Numerical controller

Info

Publication number
JPS57168830A
JPS57168830A JP5349081A JP5349081A JPS57168830A JP S57168830 A JPS57168830 A JP S57168830A JP 5349081 A JP5349081 A JP 5349081A JP 5349081 A JP5349081 A JP 5349081A JP S57168830 A JPS57168830 A JP S57168830A
Authority
JP
Japan
Prior art keywords
screw
lead
register
correction
value
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.)
Granted
Application number
JP5349081A
Other languages
Japanese (ja)
Other versions
JPS6116569B2 (en
Inventor
Kazuo Imanishi
Kiyoshi Kuchiki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5349081A priority Critical patent/JPS57168830A/en
Publication of JPS57168830A publication Critical patent/JPS57168830A/en
Publication of JPS6116569B2 publication Critical patent/JPS6116569B2/ja
Granted 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
    • G05B19/182—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 the machine tool function, e.g. thread cutting, cam making, tool direction control
    • G05B19/186—Generation of screw- or gearlike surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)

Abstract

PURPOSE:To heighten the accuracy of screw cutting, by effecting external setting to correct the irregularity of the lead of the screw which is caused by the load fluctuation or the like during the screw cutting, from the halfway part of the length of the screw. CONSTITUTION:A screw cutting instruction, a screw lead F, a screw length L and rotational frequency S for a main shaft are entered from an input program. A screw lead correction value + or -f is set in a lead correction register 9 through an external setting switch 40. A value ''1'' for determining the point of starting of correction is set in a correction register 10. Screw cutting is thus effected with the prescribed lead F. When the content of a residual distance register 7 has become equal to the value ''1'' of the register 10, a judgment circuit 11 is turned on so that the correction value + or -f set in the register 9 is transmitted from an AND gate 12 to a calculator 13, which makes a calculation ''F+ or -f''. The output of the calculator 13 is applied to a feed speed control circuit 5. A speed instruction for moving a tool rest in cooperation with the rotational frequency S for the main shaft is compensated by + or -f to perform the screw cutting with the lead F compensated to F+ or -f.
JP5349081A 1981-04-09 1981-04-09 Numerical controller Granted JPS57168830A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5349081A JPS57168830A (en) 1981-04-09 1981-04-09 Numerical controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5349081A JPS57168830A (en) 1981-04-09 1981-04-09 Numerical controller

Publications (2)

Publication Number Publication Date
JPS57168830A true JPS57168830A (en) 1982-10-18
JPS6116569B2 JPS6116569B2 (en) 1986-05-01

Family

ID=12944275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5349081A Granted JPS57168830A (en) 1981-04-09 1981-04-09 Numerical controller

Country Status (1)

Country Link
JP (1) JPS57168830A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03152608A (en) * 1989-11-08 1991-06-28 Okuma Mach Works Ltd Position controller for machine tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03152608A (en) * 1989-11-08 1991-06-28 Okuma Mach Works Ltd Position controller for machine tool

Also Published As

Publication number Publication date
JPS6116569B2 (en) 1986-05-01

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