JPS576345A - Chip inspecting device - Google Patents

Chip inspecting device

Info

Publication number
JPS576345A
JPS576345A JP7988680A JP7988680A JPS576345A JP S576345 A JPS576345 A JP S576345A JP 7988680 A JP7988680 A JP 7988680A JP 7988680 A JP7988680 A JP 7988680A JP S576345 A JPS576345 A JP S576345A
Authority
JP
Japan
Prior art keywords
throw
tip
signal
chip
output
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
JP7988680A
Other languages
Japanese (ja)
Inventor
Yoshinobu Kashiuchi
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP7988680A priority Critical patent/JPS576345A/en
Publication of JPS576345A publication Critical patent/JPS576345A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

PURPOSE:To precisely detect the presence or absence of any chip in the end part of throw-away tips with simple constitution by subjecting the output of a photoelectric transducer to signal processing only within the range around the throw-away tip. CONSTITUTION:While the angle of projected light 2 and the side of a throw-away tip 1 is being maintained, said tip is moved in an A direction, by which the entire end part of the tip 1 is imaged on a photoelectric transducer 4. The signal from the transducer 5 is taken into the memory of a microcomputer 8 via an A/D converter 6, and the difference between the output signal and the delayed output of this signal is taken only within the range from where the level thereof rises higher than a minimum level in the central area of the side of the throw-away tip in the rise part of the output signal up to where it lowers below the minimum level in the fall part of the output signal. The times when this differential output lowered below a set level are counted, and when the value thereof is larger than the set value, it is discriminated as a chip. Thereby, the chip is detected stably and surely.
JP7988680A 1980-06-12 1980-06-12 Chip inspecting device Pending JPS576345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7988680A JPS576345A (en) 1980-06-12 1980-06-12 Chip inspecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7988680A JPS576345A (en) 1980-06-12 1980-06-12 Chip inspecting device

Publications (1)

Publication Number Publication Date
JPS576345A true JPS576345A (en) 1982-01-13

Family

ID=13702735

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7988680A Pending JPS576345A (en) 1980-06-12 1980-06-12 Chip inspecting device

Country Status (1)

Country Link
JP (1) JPS576345A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02212045A (en) * 1989-02-10 1990-08-23 Disco Abrasive Syst Ltd Device for detecting defective blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02212045A (en) * 1989-02-10 1990-08-23 Disco Abrasive Syst Ltd Device for detecting defective blade

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