JPS57156144A - Backlash detector - Google Patents

Backlash detector

Info

Publication number
JPS57156144A
JPS57156144A JP3940581A JP3940581A JPS57156144A JP S57156144 A JPS57156144 A JP S57156144A JP 3940581 A JP3940581 A JP 3940581A JP 3940581 A JP3940581 A JP 3940581A JP S57156144 A JPS57156144 A JP S57156144A
Authority
JP
Japan
Prior art keywords
backlash
detecting means
load current
period
load
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
JP3940581A
Other languages
Japanese (ja)
Inventor
Masayuki Tomizawa
Yukiro Tsuji
Masayoshi Ozeki
Tadashi Okawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3940581A priority Critical patent/JPS57156144A/en
Publication of JPS57156144A publication Critical patent/JPS57156144A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/54—Arrangements or details not restricted to group B23Q5/02 or group B23Q5/22 respectively, e.g. control handles
    • B23Q5/56—Preventing backlash

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Position Or Direction (AREA)

Abstract

PURPOSE:To automatically detect feed action for if in a backlash period or not, by providing a detecting means for detecting a load current in a servo motor and using this detected value. CONSTITUTION:A load current detecting means 20 detects a load current in a servo motor 4 driving a machining table 6. A detecting means 23 is input with a detected value from the load current detecting means 20, if the value is not less than a load of certain level, its decision is a state of actual operation, if not more than a preset value, it performs a decision as the feed action in a backlash period. That is, because of a light load for the backlash period, a feed amount in said period is measured to obtain a backlash amount.
JP3940581A 1981-03-20 1981-03-20 Backlash detector Pending JPS57156144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3940581A JPS57156144A (en) 1981-03-20 1981-03-20 Backlash detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3940581A JPS57156144A (en) 1981-03-20 1981-03-20 Backlash detector

Publications (1)

Publication Number Publication Date
JPS57156144A true JPS57156144A (en) 1982-09-27

Family

ID=12552075

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3940581A Pending JPS57156144A (en) 1981-03-20 1981-03-20 Backlash detector

Country Status (1)

Country Link
JP (1) JPS57156144A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072004A (en) * 1983-09-27 1985-04-24 Kobe Steel Ltd Control device of direct teaching type industrial robot
JP2007044599A (en) * 2005-08-09 2007-02-22 Maekawa Kogyosho:Kk Horizontal hammer crusher
JP2009136741A (en) * 2007-12-05 2009-06-25 Horai Co Ltd Crusher

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114643A (en) * 1980-02-12 1981-09-09 Hitachi Seiki Co Ltd Automatic backlash compensating method for machine tool

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56114643A (en) * 1980-02-12 1981-09-09 Hitachi Seiki Co Ltd Automatic backlash compensating method for machine tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072004A (en) * 1983-09-27 1985-04-24 Kobe Steel Ltd Control device of direct teaching type industrial robot
JP2007044599A (en) * 2005-08-09 2007-02-22 Maekawa Kogyosho:Kk Horizontal hammer crusher
JP2009136741A (en) * 2007-12-05 2009-06-25 Horai Co Ltd Crusher

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