JPS5648544A - Crack detector - Google Patents

Crack detector

Info

Publication number
JPS5648544A
JPS5648544A JP12662979A JP12662979A JPS5648544A JP S5648544 A JPS5648544 A JP S5648544A JP 12662979 A JP12662979 A JP 12662979A JP 12662979 A JP12662979 A JP 12662979A JP S5648544 A JPS5648544 A JP S5648544A
Authority
JP
Japan
Prior art keywords
chip
angle
transducer
crack
light
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
JP12662979A
Other languages
Japanese (ja)
Other versions
JPS6213617B2 (en
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 JP12662979A priority Critical patent/JPS5648544A/en
Publication of JPS5648544A publication Critical patent/JPS5648544A/en
Publication of JPS6213617B2 publication Critical patent/JPS6213617B2/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
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

Abstract

PURPOSE:To realize a high-accuracy crack detection, by projecting the light to the side with an angle of 50-80 deg. so that a good-quality crack signal may be obtained from the side surface of the throwaway chip and at the same time providing the thin slit-type photoelectric transducer at the upper part of the side. CONSTITUTION:The light projection 2 is carried out to the side with an angle of 50-80 deg. so that a good-quality crack signal may be obtained from the side surface of the throwaway chip 1. And then the thin slit-type photoelectric transducer 4 is provided at the upper part of the side with an angle of 45 deg. secured to the side. Then the chip 1 is shifted while keeping the angle formed by the projected light and the chip side, and as a result the entire end parts of the chip 1 are image-formed to the transducer 4. Thus if some crack is caused at the end parts of the chip 1, some change is given to the output of the transducer 4.
JP12662979A 1979-09-28 1979-09-28 Crack detector Granted JPS5648544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12662979A JPS5648544A (en) 1979-09-28 1979-09-28 Crack detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12662979A JPS5648544A (en) 1979-09-28 1979-09-28 Crack detector

Publications (2)

Publication Number Publication Date
JPS5648544A true JPS5648544A (en) 1981-05-01
JPS6213617B2 JPS6213617B2 (en) 1987-03-27

Family

ID=14939917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12662979A Granted JPS5648544A (en) 1979-09-28 1979-09-28 Crack detector

Country Status (1)

Country Link
JP (1) JPS5648544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157735A (en) * 1988-09-09 1992-10-20 Hitachi, Ltd. Chipping detection system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62288019A (en) * 1986-06-06 1987-12-14 Sekisui Chem Co Ltd Injection molding device
JPH0436899Y2 (en) * 1987-12-28 1992-08-31

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036189A (en) * 1973-07-31 1975-04-05
JPS5149779A (en) * 1974-10-28 1976-04-30 Canon Kk BUTSUTAIRYOBUKETSUKANKENSAHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036189A (en) * 1973-07-31 1975-04-05
JPS5149779A (en) * 1974-10-28 1976-04-30 Canon Kk BUTSUTAIRYOBUKETSUKANKENSAHOHO

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157735A (en) * 1988-09-09 1992-10-20 Hitachi, Ltd. Chipping detection system and method

Also Published As

Publication number Publication date
JPS6213617B2 (en) 1987-03-27

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