JPS55120938A - Production of throwaway tip - Google Patents

Production of throwaway tip

Info

Publication number
JPS55120938A
JPS55120938A JP2922679A JP2922679A JPS55120938A JP S55120938 A JPS55120938 A JP S55120938A JP 2922679 A JP2922679 A JP 2922679A JP 2922679 A JP2922679 A JP 2922679A JP S55120938 A JPS55120938 A JP S55120938A
Authority
JP
Japan
Prior art keywords
disc
throwaway tip
circular
production
compound sintered
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
JP2922679A
Other languages
Japanese (ja)
Other versions
JPS5641372B2 (en
Inventor
Akio Hara
Shuji Yatsu
Yuichiro Kono
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 JP2922679A priority Critical patent/JPS55120938A/en
Publication of JPS55120938A publication Critical patent/JPS55120938A/en
Publication of JPS5641372B2 publication Critical patent/JPS5641372B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To facilitate the production of a circular throwaway tip and ensure secure clamping by a method wherein a disc consisting of a hard compound sintered compact is provided with a circular center hole and then used as cutting edge, while the small piece cut away from the disc is utilized as a throwaway tip.
CONSTITUTION: A circular center hole 11 is cut in the central portion of a compound sintered disc 1 by a laser machine or an electric spark machine. The hard sintered compact at the outer peripheral portion of the disc thus produced is used as a cutting edge. The disc-shaped compound sintered body 12 cut away from the disc 1 is used directly as a small circular throwaway tip.
COPYRIGHT: (C)1980,JPO&Japio
JP2922679A 1979-03-12 1979-03-12 Production of throwaway tip Granted JPS55120938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2922679A JPS55120938A (en) 1979-03-12 1979-03-12 Production of throwaway tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2922679A JPS55120938A (en) 1979-03-12 1979-03-12 Production of throwaway tip

Publications (2)

Publication Number Publication Date
JPS55120938A true JPS55120938A (en) 1980-09-17
JPS5641372B2 JPS5641372B2 (en) 1981-09-28

Family

ID=12270297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2922679A Granted JPS55120938A (en) 1979-03-12 1979-03-12 Production of throwaway tip

Country Status (1)

Country Link
JP (1) JPS55120938A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015105471A (en) * 2013-11-28 2015-06-08 国立研究開発法人産業技術総合研究所 Pdc cutter and pdc drill bit for pit drilling

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1598441B1 (en) 2003-02-26 2018-09-26 Sumitomo Electric Industries, Ltd. Amorphous carbon film and process for producing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015105471A (en) * 2013-11-28 2015-06-08 国立研究開発法人産業技術総合研究所 Pdc cutter and pdc drill bit for pit drilling

Also Published As

Publication number Publication date
JPS5641372B2 (en) 1981-09-28

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