CUTTING EDGE STRUCTURE FOR CUTTING TOOL, AND CUTTING TOOL WITH THE CUTTING EDGE STRUCTURE

WIPO Patent Application WO/2011/090066

A1

A cutting edge structure for a cutting tool, comprising a base material (6) and a cutting edge member (7) which is supported by the base material (6) and has higher hardness than the base material (6). The base material (6) has a first surface (6a) and a second surface (6b) which intersects the first surface (6a). The cutting edge member (7) comprises a coating (7) which is formed by welding either a material which constitutes an electric discharge electrode (8) or a reaction substance of the electric discharge electrode (8) to the second surface (6b), the electric discharge electrode (8) being molded from powder of metal or powder of a compound of metal or powder of ceramics or powder of a mixture of the abovementioned types of powder, the welding being performed by the energy of electric discharge generated between the second surface (6b) and the electric discharge electrode (8). The base material (6) and the cutting edge member (7) are formed so that the tip of the coating (7) protrudes to the tip side of the cutting edge from the ridge at which the first surface (6a) and the second surface (6b) intersect each other and so that the cutting edge angle (θ) is in the range from 10° to 20°, inclusive.

OCHIAI HIROYUKI (JP)
WATANABE MITSUTOSHI (JP)
SHIMODA YUKIHIRO (JP)

PCT/JP2011/050856

July 28, 2011

January 19, 2011

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IHI CORP (JP)
OCHIAI HIROYUKI (JP)
WATANABE MITSUTOSHI (JP)
SHIMODA YUKIHIRO (JP)

C23C26/00; B26B9/00

JP2008264116A	2008-11-06
JPH11300534A	1999-11-02
JPH01190386A	1989-07-31
JP2008264116A	2008-11-06
JP2010010451A	2010-01-14

See also references of EP 2527492A4

MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)

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