JPS54113583A - Blade damage detecting method of rotary blade machine tool and means therefor - Google Patents

Blade damage detecting method of rotary blade machine tool and means therefor

Info

Publication number
JPS54113583A
JPS54113583A JP1983278A JP1983278A JPS54113583A JP S54113583 A JPS54113583 A JP S54113583A JP 1983278 A JP1983278 A JP 1983278A JP 1983278 A JP1983278 A JP 1983278A JP S54113583 A JPS54113583 A JP S54113583A
Authority
JP
Japan
Prior art keywords
rotary blade
damaged
blade
motor
machine 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.)
Pending
Application number
JP1983278A
Other languages
Japanese (ja)
Inventor
Tsutomu Mimata
Akira Kabashima
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 JP1983278A priority Critical patent/JPS54113583A/en
Publication of JPS54113583A publication Critical patent/JPS54113583A/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
    • 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 immediately and surely detect the damage of a rotary blade by restoring pulse motor to its initial state to stop the operation when a rotary blade is damaged at the beginning of, or during, machining. CONSTITUTION:When a rotary blade 1 is damaged, the approach of the rotary blade 1, being rotated, toward an edge of wafer 3 produces no or little contact between the rotary blade 1 and wafer 3, which results in a very low output voltage from a high-frequency microphone 7. Therefore, the output signal at a comparison circuit 11 becomes very low during the period where an output signal at a fixed circuit 14 for cutting range shows high level. Thus, the damage of the rotary blade 1 is detected. Also, when the rotary blade 1 is damaged during timing, the output voltage of the microphone 7 lowers, which, through a circuit 13, stops a motor 6 for traverse feeding, descends a motor 5 for vertical feeding, and stops the operation.
JP1983278A 1978-02-24 1978-02-24 Blade damage detecting method of rotary blade machine tool and means therefor Pending JPS54113583A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1983278A JPS54113583A (en) 1978-02-24 1978-02-24 Blade damage detecting method of rotary blade machine tool and means therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1983278A JPS54113583A (en) 1978-02-24 1978-02-24 Blade damage detecting method of rotary blade machine tool and means therefor

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP8178184A Division JPS6062445A (en) 1984-04-25 1984-04-25 Dieing device
JP60082469A Division JPS60259360A (en) 1985-04-19 1985-04-19 Dicing

Publications (1)

Publication Number Publication Date
JPS54113583A true JPS54113583A (en) 1979-09-05

Family

ID=12010252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1983278A Pending JPS54113583A (en) 1978-02-24 1978-02-24 Blade damage detecting method of rotary blade machine tool and means therefor

Country Status (1)

Country Link
JP (1) JPS54113583A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224909A (en) * 1985-07-25 1987-02-02 Nippon Kokan Kk <Nkk> Method for detecting missing of saw tooth in sawing machine
US6142046A (en) * 1996-08-06 2000-11-07 Cae Machinery Ltd. Knife projection sensing system
US7258051B2 (en) * 2000-11-10 2007-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Arrangement for cutting an optical fibre
WO2015075305A1 (en) * 2013-11-19 2015-05-28 Andritz Oy Chipper machine knife monitoring

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224909A (en) * 1985-07-25 1987-02-02 Nippon Kokan Kk <Nkk> Method for detecting missing of saw tooth in sawing machine
US6142046A (en) * 1996-08-06 2000-11-07 Cae Machinery Ltd. Knife projection sensing system
US6237455B1 (en) * 1996-08-06 2001-05-29 Cae Machinery Ltd. Knife projection sensing system
US7258051B2 (en) * 2000-11-10 2007-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Arrangement for cutting an optical fibre
WO2015075305A1 (en) * 2013-11-19 2015-05-28 Andritz Oy Chipper machine knife monitoring

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