JPS54113582A - Abnormal conoition monitor of machine tool - Google Patents

Abnormal conoition monitor of machine tool

Info

Publication number
JPS54113582A
JPS54113582A JP1980178A JP1980178A JPS54113582A JP S54113582 A JPS54113582 A JP S54113582A JP 1980178 A JP1980178 A JP 1980178A JP 1980178 A JP1980178 A JP 1980178A JP S54113582 A JPS54113582 A JP S54113582A
Authority
JP
Japan
Prior art keywords
vibration
values
machine tool
relay
tool
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
JP1980178A
Other languages
Japanese (ja)
Other versions
JPS6059108B2 (en
Inventor
Hiroshi Ishimura
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 JP53019801A priority Critical patent/JPS6059108B2/en
Publication of JPS54113582A publication Critical patent/JPS54113582A/en
Publication of JPS6059108B2 publication Critical patent/JPS6059108B2/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
    • B23Q17/0961—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
    • 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

Landscapes

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

Abstract

PURPOSE:To minimize disturbances from outside and detect disorders without fail by detecting abnormality on the basis of two detected values of consumed electric power and the vibration of a machine tool. CONSTITUTION:The vibration of a tool becomes larger as a cutting operation is repeated and the abrasion of a tool progresses. Also, the electric power consumption of a power motor increases due to the increase of cutting resistance. These increases are input into comparison devices 21, 22, through A-D transformers 18, 19. Then, the comparison devices 21, 22 compares the average values of these detected values at each frequency divided pulse interval with the average values of memorized values of a power memory 15 and a vibration memory 16 at each frequency devided pulse interval. A output signal is generated when there appears a difference of, e.g., more than 20% between the two. When this output signal enters a relay 24 through an AND circuit 23, the relay 24 is activated to let a buzzer go off to give an alarm.
JP53019801A 1978-02-24 1978-02-24 Machine tool abnormality monitoring device Expired JPS6059108B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53019801A JPS6059108B2 (en) 1978-02-24 1978-02-24 Machine tool abnormality monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53019801A JPS6059108B2 (en) 1978-02-24 1978-02-24 Machine tool abnormality monitoring device

Publications (2)

Publication Number Publication Date
JPS54113582A true JPS54113582A (en) 1979-09-05
JPS6059108B2 JPS6059108B2 (en) 1985-12-23

Family

ID=12009441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53019801A Expired JPS6059108B2 (en) 1978-02-24 1978-02-24 Machine tool abnormality monitoring device

Country Status (1)

Country Link
JP (1) JPS6059108B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555252A (en) * 1978-06-28 1980-01-16 Toyota Motor Corp Method of detecting fault of tool in machine tool
JPS55120403U (en) * 1979-02-20 1980-08-26
WO1983002416A1 (en) * 1982-01-12 1983-07-21 Shimizu, Yutaka Numerical control machining system
JPS61100347A (en) * 1984-10-24 1986-05-19 ゼネラル・エレクトリツク・カンパニイ Method and device for detecting damage of tool
JPS62166948A (en) * 1986-01-16 1987-07-23 Takaaki Nagao Device for predicting abnormality of rotary tool
JP2020015106A (en) * 2018-07-23 2020-01-30 三菱電機株式会社 Tool wear determination device
CN112091726A (en) * 2019-06-18 2020-12-18 株式会社捷太格特 Abnormality detection device for machining tool
JP6962632B1 (en) * 2021-08-20 2021-11-05 株式会社Mazin Machine tool current measurement system and its method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS555252A (en) * 1978-06-28 1980-01-16 Toyota Motor Corp Method of detecting fault of tool in machine tool
JPS5820743B2 (en) * 1978-06-28 1983-04-25 トヨタ自動車株式会社 Tool abnormality detection method for machine tools
JPS55120403U (en) * 1979-02-20 1980-08-26
WO1983002416A1 (en) * 1982-01-12 1983-07-21 Shimizu, Yutaka Numerical control machining system
JPS61100347A (en) * 1984-10-24 1986-05-19 ゼネラル・エレクトリツク・カンパニイ Method and device for detecting damage of tool
JPS62166948A (en) * 1986-01-16 1987-07-23 Takaaki Nagao Device for predicting abnormality of rotary tool
JP2020015106A (en) * 2018-07-23 2020-01-30 三菱電機株式会社 Tool wear determination device
CN112091726A (en) * 2019-06-18 2020-12-18 株式会社捷太格特 Abnormality detection device for machining tool
JP2020203356A (en) * 2019-06-18 2020-12-24 株式会社ジェイテクト Abnormality detection device of machining tool
CN112091726B (en) * 2019-06-18 2024-08-06 株式会社捷太格特 Abnormality detection device for machining tool
JP6962632B1 (en) * 2021-08-20 2021-11-05 株式会社Mazin Machine tool current measurement system and its method
JP2023028733A (en) * 2021-08-20 2023-03-03 株式会社Mazin Current measurement system of machine tool and method therefor

Also Published As

Publication number Publication date
JPS6059108B2 (en) 1985-12-23

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