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Title:
ROTARY CUTTING TOOL
Document Type and Number:
Japanese Patent JP2000043006
Kind Code:
A
Abstract:

To make the tip parts of a central cone and others which are fitted to the end of a rotary cutting tool having a cutting blade of high hardness sintered body resistant to breakage.

A boring cone D1 for wood working is cut out from an intermediate product in which an end part material formed by sintering a rigid backing layer L1, a high hardness sintered body layer L2, and a rigid backing layer L3 integrally is joined to a shank material by brazing. Namely, a central cone 10 is formed from a cemented carbide, round bristle draw blades 7, 8 and a bottom blade 9 are formed from a high hardness sintered body containing diamond particles and cubic boron nitride particles, and a supporting base material is formed from a cemented carbide.


Inventors:
OGURA NORIO
MANTANI TETSURO
Application Number:
JP1998000217810
Publication Date:
February 15, 2000
Filing Date:
July 31, 1998
Export Citation:
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Assignee:
KANEFUSA KNIFE & SAW
International Classes:
B23C5/10; B23B51/02; B27G15/00; (IPC1-7): B27G15/00; B23C5/10
Attorney, Agent or Firm:
岡田 英彦 (外6名)



 
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