JPH0215823B2 - - Google Patents

Info

Publication number
JPH0215823B2
JPH0215823B2 JP58185952A JP18595283A JPH0215823B2 JP H0215823 B2 JPH0215823 B2 JP H0215823B2 JP 58185952 A JP58185952 A JP 58185952A JP 18595283 A JP18595283 A JP 18595283A JP H0215823 B2 JPH0215823 B2 JP H0215823B2
Authority
JP
Japan
Prior art keywords
signal
level
circuit
comparator
outputs
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.)
Expired - Lifetime
Application number
JP58185952A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6079261A (ja
Inventor
Masaru Sakai
Ichiro Inazaki
Takeshi Oomya
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.)
Nachi Fujikoshi Corp
Original Assignee
Fujikoshi KK
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 Fujikoshi KK filed Critical Fujikoshi KK
Priority to JP58185952A priority Critical patent/JPS6079261A/ja
Publication of JPS6079261A publication Critical patent/JPS6079261A/ja
Publication of JPH0215823B2 publication Critical patent/JPH0215823B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
JP58185952A 1983-10-06 1983-10-06 工具異常検出装置 Granted JPS6079261A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58185952A JPS6079261A (ja) 1983-10-06 1983-10-06 工具異常検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58185952A JPS6079261A (ja) 1983-10-06 1983-10-06 工具異常検出装置

Publications (2)

Publication Number Publication Date
JPS6079261A JPS6079261A (ja) 1985-05-07
JPH0215823B2 true JPH0215823B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-04-13

Family

ID=16179745

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58185952A Granted JPS6079261A (ja) 1983-10-06 1983-10-06 工具異常検出装置

Country Status (1)

Country Link
JP (1) JPS6079261A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05285723A (ja) * 1992-02-14 1993-11-02 Hitachi Koki Co Ltd チップ付き切削工具

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02190239A (ja) * 1989-01-19 1990-07-26 Nachi Fujikoshi Corp 印刷配線板孔あけ機用ドリル異常検出装置
US6681633B2 (en) * 2000-11-07 2004-01-27 Halliburton Energy Services, Inc. Spectral power ratio method and system for detecting drill bit failure and signaling surface operator
US7357197B2 (en) 2000-11-07 2008-04-15 Halliburton Energy Services, Inc. Method and apparatus for monitoring the condition of a downhole drill bit, and communicating the condition to the surface
US6712160B1 (en) 2000-11-07 2004-03-30 Halliburton Energy Services Inc. Leadless sub assembly for downhole detection system
US6817425B2 (en) 2000-11-07 2004-11-16 Halliburton Energy Serv Inc Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator
JP4569749B2 (ja) * 2004-07-23 2010-10-27 旭硝子株式会社 ガラス板の割れ検出方法及びその装置並びにガラス板の研磨方法及びその装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05285723A (ja) * 1992-02-14 1993-11-02 Hitachi Koki Co Ltd チップ付き切削工具

Also Published As

Publication number Publication date
JPS6079261A (ja) 1985-05-07

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