JPS6147645B2 - - Google Patents

Info

Publication number
JPS6147645B2
JPS6147645B2 JP9600580A JP9600580A JPS6147645B2 JP S6147645 B2 JPS6147645 B2 JP S6147645B2 JP 9600580 A JP9600580 A JP 9600580A JP 9600580 A JP9600580 A JP 9600580A JP S6147645 B2 JPS6147645 B2 JP S6147645B2
Authority
JP
Japan
Prior art keywords
drill
center
round hole
cutting edge
cutting
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
Application number
JP9600580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5721213A (en
Inventor
Hideo Negishi
Kaoru Goto
Sueji Takatani
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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Priority to JP9600580A priority Critical patent/JPS5721213A/ja
Publication of JPS5721213A publication Critical patent/JPS5721213A/ja
Publication of JPS6147645B2 publication Critical patent/JPS6147645B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)
JP9600580A 1980-07-14 1980-07-14 Drill Granted JPS5721213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9600580A JPS5721213A (en) 1980-07-14 1980-07-14 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9600580A JPS5721213A (en) 1980-07-14 1980-07-14 Drill

Publications (2)

Publication Number Publication Date
JPS5721213A JPS5721213A (en) 1982-02-03
JPS6147645B2 true JPS6147645B2 (en]) 1986-10-20

Family

ID=14153015

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9600580A Granted JPS5721213A (en) 1980-07-14 1980-07-14 Drill

Country Status (1)

Country Link
JP (1) JPS5721213A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102212841B1 (ko) 2019-12-24 2021-02-05 가부시키가이샤 스즈키 반도체 장치의 제조 방법 및 반도체 장치의 제조 장치

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248174Y2 (en]) * 1985-07-05 1990-12-18
ES2029456T3 (es) * 1986-06-07 1992-08-16 Hertel Aktiengesellschaft Werkzeuge + Hartstoffe Procedimiento para el afilado de una broca espiral.
JP3739048B2 (ja) * 2002-11-01 2006-01-25 株式会社ミヤナガ ドリルビット

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102212841B1 (ko) 2019-12-24 2021-02-05 가부시키가이샤 스즈키 반도체 장치의 제조 방법 및 반도체 장치의 제조 장치

Also Published As

Publication number Publication date
JPS5721213A (en) 1982-02-03

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