JPH0255163B2 - - Google Patents

Info

Publication number
JPH0255163B2
JPH0255163B2 JP7326385A JP7326385A JPH0255163B2 JP H0255163 B2 JPH0255163 B2 JP H0255163B2 JP 7326385 A JP7326385 A JP 7326385A JP 7326385 A JP7326385 A JP 7326385A JP H0255163 B2 JPH0255163 B2 JP H0255163B2
Authority
JP
Japan
Prior art keywords
angle
tip
drill shank
diagonal line
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.)
Expired
Application number
JP7326385A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61230806A (ja
Inventor
Hideki Urushibata
Kotaro Tanaka
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.)
NIPPON SEIMITSU KIKAI KOSAKU KK
Original Assignee
NIPPON SEIMITSU KIKAI KOSAKU 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 NIPPON SEIMITSU KIKAI KOSAKU KK filed Critical NIPPON SEIMITSU KIKAI KOSAKU KK
Priority to JP7326385A priority Critical patent/JPS61230806A/ja
Publication of JPS61230806A publication Critical patent/JPS61230806A/ja
Publication of JPH0255163B2 publication Critical patent/JPH0255163B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/14—Configuration of the cutting part, i.e. the main cutting edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
JP7326385A 1985-04-04 1985-04-04 難削材穴明用工具 Granted JPS61230806A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7326385A JPS61230806A (ja) 1985-04-04 1985-04-04 難削材穴明用工具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7326385A JPS61230806A (ja) 1985-04-04 1985-04-04 難削材穴明用工具

Publications (2)

Publication Number Publication Date
JPS61230806A JPS61230806A (ja) 1986-10-15
JPH0255163B2 true JPH0255163B2 (en]) 1990-11-26

Family

ID=13513112

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7326385A Granted JPS61230806A (ja) 1985-04-04 1985-04-04 難削材穴明用工具

Country Status (1)

Country Link
JP (1) JPS61230806A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490959U (en]) * 1990-12-20 1992-08-07

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2000231910B2 (en) * 2000-03-15 2003-10-23 Kabushiki Kaisha Miyanaga Drill bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0490959U (en]) * 1990-12-20 1992-08-07

Also Published As

Publication number Publication date
JPS61230806A (ja) 1986-10-15

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