JPS5676361A - Detector of tool failure - Google Patents

Detector of tool failure

Info

Publication number
JPS5676361A
JPS5676361A JP14651979A JP14651979A JPS5676361A JP S5676361 A JPS5676361 A JP S5676361A JP 14651979 A JP14651979 A JP 14651979A JP 14651979 A JP14651979 A JP 14651979A JP S5676361 A JPS5676361 A JP S5676361A
Authority
JP
Japan
Prior art keywords
inputted
detector
detected
revolution
comparator
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
JP14651979A
Other languages
Japanese (ja)
Other versions
JPS6236826B2 (en
Inventor
Yoshiaki Saijo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14651979A priority Critical patent/JPS5676361A/en
Publication of JPS5676361A publication Critical patent/JPS5676361A/en
Publication of JPS6236826B2 publication Critical patent/JPS6236826B2/ja
Granted 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
    • B23Q17/0904—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 before or after machining
    • B23Q17/0919—Arrangements for measuring or adjusting cutting-tool geometry in presetting devices
    • B23Q17/0947—Monitoring devices for measuring cutting angles

Landscapes

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

Abstract

PURPOSE:To detect the state of failure of a cutting tool in a cutting operation regardless of cutting conditions by a method wherein vibrations generated in the cutting opertion are detected as electrical signals and periods of revolution of the shaft are detected, too. CONSTITUTION:An electrical signal detected by a vibration detector 1 is compared with the preset value by a comparator 4 and only when a signal larger than preset value is inputted, one pulse is inputted to a pulse interval detector 5. The pulse interval value detected thereby is inputted to a subtractor 6. A detector of periods of revolution 7 detects the period of revolution of a main shaft and the value of the period is outputted to the subtractor 6. The output of the substractor 6 is inputted to the comparator 8 and compared with a preset value B. A control signal D indicating the state of failure of the tool is outputted from the comparator 8.
JP14651979A 1979-11-14 1979-11-14 Detector of tool failure Granted JPS5676361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14651979A JPS5676361A (en) 1979-11-14 1979-11-14 Detector of tool failure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14651979A JPS5676361A (en) 1979-11-14 1979-11-14 Detector of tool failure

Publications (2)

Publication Number Publication Date
JPS5676361A true JPS5676361A (en) 1981-06-23
JPS6236826B2 JPS6236826B2 (en) 1987-08-10

Family

ID=15409478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14651979A Granted JPS5676361A (en) 1979-11-14 1979-11-14 Detector of tool failure

Country Status (1)

Country Link
JP (1) JPS5676361A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116513A (en) * 1982-12-24 1984-07-05 Sumitomo Heavy Ind Ltd Abnormality detecting device for blade
JPS6274553A (en) * 1985-09-25 1987-04-06 Kawasaki Steel Corp Method for detecting abnormality in machine tool
JPH0569015A (en) * 1991-09-05 1993-03-23 Ishikawajima Harima Heavy Ind Co Ltd Detector for damage of on-line roll grinder stone
US6338024B1 (en) 1998-04-07 2002-01-08 Fanuc Ltd. Industrial machine having abnormal vibration detecting function
CN105798703A (en) * 2016-06-07 2016-07-27 于法周 Automatic fault detecting device for main transmission of lathe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59116513A (en) * 1982-12-24 1984-07-05 Sumitomo Heavy Ind Ltd Abnormality detecting device for blade
JPH035942B2 (en) * 1982-12-24 1991-01-28 Sumitomo Heavy Industries
JPS6274553A (en) * 1985-09-25 1987-04-06 Kawasaki Steel Corp Method for detecting abnormality in machine tool
JPH0133299B2 (en) * 1985-09-25 1989-07-12 Kawasaki Steel Co
JPH0569015A (en) * 1991-09-05 1993-03-23 Ishikawajima Harima Heavy Ind Co Ltd Detector for damage of on-line roll grinder stone
US6338024B1 (en) 1998-04-07 2002-01-08 Fanuc Ltd. Industrial machine having abnormal vibration detecting function
CN105798703A (en) * 2016-06-07 2016-07-27 于法周 Automatic fault detecting device for main transmission of lathe

Also Published As

Publication number Publication date
JPS6236826B2 (en) 1987-08-10

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