JPS56139858A - Tool abnormality detecting method of nc machine tool - Google Patents

Tool abnormality detecting method of nc machine tool

Info

Publication number
JPS56139858A
JPS56139858A JP3949980A JP3949980A JPS56139858A JP S56139858 A JPS56139858 A JP S56139858A JP 3949980 A JP3949980 A JP 3949980A JP 3949980 A JP3949980 A JP 3949980A JP S56139858 A JPS56139858 A JP S56139858A
Authority
JP
Japan
Prior art keywords
tool
information
threshold value
detecting method
abnormality detecting
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
JP3949980A
Other languages
Japanese (ja)
Inventor
Hideyuki Wakai
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP3949980A priority Critical patent/JPS56139858A/en
Priority to GB8109126A priority patent/GB2075875B/en
Priority to DE19813111425 priority patent/DE3111425A1/en
Priority to US06/247,233 priority patent/US4456960A/en
Publication of JPS56139858A publication Critical patent/JPS56139858A/en
Priority to GB08304276A priority patent/GB2118074B/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
    • 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
    • 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
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/34—Director, elements to supervisory
    • G05B2219/34465—Safety, control of correct operation, abnormal states

Landscapes

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

Abstract

PURPOSE:To detect abnormality on a cutting tool through comparison of input data with preset threshold value, by putting information for discrimination among threshold values in NC information. CONSTITUTION:Existence of discriminative information (M) is decided. If the decision is no, there is no need for detection of abnormality and accordingly no control. If it is yes, information (N) for discriminating threshold values in put in to read out a threshold value (T) corresponding with (N). The threshold value (T) is compared with data (D) from an NC machine tool 2 to decide on whether D>T or not. This operation is repeated as long as (M) is available.
JP3949980A 1980-03-27 1980-03-27 Tool abnormality detecting method of nc machine tool Pending JPS56139858A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP3949980A JPS56139858A (en) 1980-03-27 1980-03-27 Tool abnormality detecting method of nc machine tool
GB8109126A GB2075875B (en) 1980-03-27 1981-03-24 Method and device for detecting tool abnormality in machine tools
DE19813111425 DE3111425A1 (en) 1980-03-27 1981-03-24 METHOD AND DEVICE FOR DETERMINING ABNORMAL INTERFERENCE SIZES WHEN OPERATING A MACHINE TOOL
US06/247,233 US4456960A (en) 1980-03-27 1981-03-25 Method and device for detecting tool abnormality in machine tools
GB08304276A GB2118074B (en) 1980-03-27 1983-02-16 Method and device for detecting tool abnormality in numerically controlled machine tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3949980A JPS56139858A (en) 1980-03-27 1980-03-27 Tool abnormality detecting method of nc machine tool

Publications (1)

Publication Number Publication Date
JPS56139858A true JPS56139858A (en) 1981-10-31

Family

ID=12554732

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3949980A Pending JPS56139858A (en) 1980-03-27 1980-03-27 Tool abnormality detecting method of nc machine tool

Country Status (1)

Country Link
JP (1) JPS56139858A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142050A (en) * 1983-02-04 1984-08-15 Citizen Watch Co Ltd Damage detector for tool

Citations (2)

* 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
JPS5531541A (en) * 1978-08-23 1980-03-05 Toshiba Mach Co Ltd Abnormality detecting system for cutting tool

Patent Citations (2)

* 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
JPS5531541A (en) * 1978-08-23 1980-03-05 Toshiba Mach Co Ltd Abnormality detecting system for cutting tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59142050A (en) * 1983-02-04 1984-08-15 Citizen Watch Co Ltd Damage detector for tool

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