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JPS57158538A - Abnormal cutting monitoring system - Google Patents

Abnormal cutting monitoring system

Info

Publication number
JPS57158538A
JPS57158538A JP56043126A JP4312681A JPS57158538A JP S57158538 A JPS57158538 A JP S57158538A JP 56043126 A JP56043126 A JP 56043126A JP 4312681 A JP4312681 A JP 4312681A JP S57158538 A JPS57158538 A JP S57158538A
Authority
JP
Japan
Prior art keywords
data
circuit
memory
main shaft
cutting
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
JP56043126A
Other languages
Japanese (ja)
Other versions
JPS6052901B2 (en
Inventor
Hajime Inaba
Yukio Ono
Mitsuo Hiraizumi
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP56043126A priority Critical patent/JPS6052901B2/en
Publication of JPS57158538A publication Critical patent/JPS57158538A/en
Publication of JPS6052901B2 publication Critical patent/JPS6052901B2/en
Expired 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0957—Detection of tool breakage
    • 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
    • B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
    • B23Q17/0961—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring power, current or torque of a motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Sensing Apparatuses (AREA)

Abstract

PURPOSE:To reduce the memory capacity of reference data, and also to exactly detect abnormal cutting, by storing a variation of a cutting load in case of normal cutting, in a temporary memory, analyzing this data, and setting a storage condition. CONSTITUTION:A current value signal generated from a main shaft motor 1 is inputted to an instruction and monitoring switching circuit 52 through a servo unit 2 and a gate circuit 51, and in case of the instruction mode, a pair of data of a main shaft motor current value and the time are stored in a temporary memory 53. These data are analyzed by a scanning circuit 54, and the data of the temporary memory 53 are stored in a reference data memory 57 in accordance with a storage condition set to a data patterning circuit 55. Subsequently, in case of the monitoring mode, the main shaft motor current value is compared with the data stored in the memory 57 by a comparing circuit 58, and when a deviation value has exceeded an allowable value, an abnormal cutting displaying circuit 60 is operated. In this way, the memory capacity is reduced, and also it is possible to properly follow a variation of a load.
JP56043126A 1981-03-26 1981-03-26 Cutting abnormality monitoring method Expired JPS6052901B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56043126A JPS6052901B2 (en) 1981-03-26 1981-03-26 Cutting abnormality monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56043126A JPS6052901B2 (en) 1981-03-26 1981-03-26 Cutting abnormality monitoring method

Publications (2)

Publication Number Publication Date
JPS57158538A true JPS57158538A (en) 1982-09-30
JPS6052901B2 JPS6052901B2 (en) 1985-11-21

Family

ID=12655146

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56043126A Expired JPS6052901B2 (en) 1981-03-26 1981-03-26 Cutting abnormality monitoring method

Country Status (1)

Country Link
JP (1) JPS6052901B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6244356A (en) * 1985-08-23 1987-02-26 Amada Co Ltd Working state analyzer for metalworking machine
JPH03149604A (en) * 1989-11-07 1991-06-26 Fanuc Ltd Load monitoring control system for programmable controller
JP2018103340A (en) * 2016-12-28 2018-07-05 ファナック株式会社 Machine tool, production management system, and method for estimating and detecting tool life
CN111655426A (en) * 2018-01-03 2020-09-11 斗山机床株式会社 Tool abnormality detection device and detection method of machine tool
JP2021058957A (en) * 2019-10-04 2021-04-15 オークマ株式会社 Spindle monitoring device and spindle monitoring method for machine tool

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6244356A (en) * 1985-08-23 1987-02-26 Amada Co Ltd Working state analyzer for metalworking machine
JPH03149604A (en) * 1989-11-07 1991-06-26 Fanuc Ltd Load monitoring control system for programmable controller
JP2622417B2 (en) * 1989-11-07 1997-06-18 ファナック株式会社 Load monitoring control method of programmable controller
JP2018103340A (en) * 2016-12-28 2018-07-05 ファナック株式会社 Machine tool, production management system, and method for estimating and detecting tool life
US10663946B2 (en) 2016-12-28 2020-05-26 Fanuc Corporation Machine tool, production management system and method for estimating and detecting tool life
CN111655426A (en) * 2018-01-03 2020-09-11 斗山机床株式会社 Tool abnormality detection device and detection method of machine tool
CN111655426B (en) * 2018-01-03 2022-02-08 斗山机床株式会社 Tool abnormality detection device and detection method for machine tool
JP2021058957A (en) * 2019-10-04 2021-04-15 オークマ株式会社 Spindle monitoring device and spindle monitoring method for machine tool
US12011793B2 (en) 2019-10-04 2024-06-18 Okuma Corporation Main spindle monitoring device and main spindle monitoring method of machine tool

Also Published As

Publication number Publication date
JPS6052901B2 (en) 1985-11-21

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