Metal cutting blade and process for manufacture thereof

Details Metal cutting blade and process for manufacture thereof Metal cutting blade and process for manufacture thereof

1990-04-04

1991-12-24

Schmidt, Frederick R.

Cutters, for shaping

Comprising tool of specific chemical composition

B23P 1528

Patent

active

050747215

ABSTRACT:
A hard metal cutting blade comprises a blade body having front and rear faces. The blade body is meant for engagement to a tool head and for rotation about a rotation axis. The blade is moved in a feed direction for the fine machining of bores that extend parallel to the rotation axis. The front face of the blade includes a recessed chip face which defines a cutting edge that has a main blade that is followed by a secondary blade. The main blade is divided into two regions, a first region that is almost flush or slightly inclined with respect to the secondary blade, and a second region which inclines at a greater angle and is spaced further from the secondary blade. An abrasion-resistant hard material coats the blade body. This material is ground away from the chip face, at least in the area of the secondary blade, to provide a radius of no more than 5 .mu.m for the edge of the secondary blade.

REFERENCES:
patent: 2244053 (1941-06-01), Comstock
patent: 3064349 (1962-11-01), Futterer et al.
patent: 3369283 (1968-02-01), Colding
patent: 3387368 (1968-06-01), Scheck
patent: 3974564 (1976-08-01), Hough
patent: 4086733 (1978-05-01), Vig
patent: 4159884 (1979-07-01), Schott
patent: 4643620 (1987-02-01), Fujii et al.
patent: 4669923 (1987-06-01), McKinney
Article from "American Machinist", Mar. 1983.
Article from "American Machinist", Jul. 1979.

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