One-piece rotary material removing tool of sintered hard metal

Details One-piece rotary material removing tool of sintered hard metal One-piece rotary material removing tool of sintered hard metal

1987-08-27

1989-05-02

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

Including tool with duct

76108T, 408230, 408239A, B23B 5100

Patent

active

048263648

ABSTRACT:
A one-piece rotary drill or end milling cutter is an extruded product made of sintered hard metal. The front end portion of its shank has one or more cutting edges and its rear end portion tapers in a direction away from the front end portion and is receivable with friction in a complementary conical socket of a rotary holder. The shank has one or more longitudinally extending coolant holes with a circular or triangular cross-sectional outline, and such hole or holes are formed in the course of the extruding step. The periperhal surface of the shank has one or more longitudinally extending chip evacuating grooves, and those portions of the grooves which are formed in the rear end portion of the shank contain fillers of bondable plastic material or solder.

REFERENCES:
patent: 1191717 (1916-07-01), Moore
patent: 1454452 (1923-05-01), Moore
patent: 2405298 (1946-08-01), Fleischer
patent: 2778252 (1957-01-01), Oxford, Jr.
patent: 2986960 (1961-06-01), Oxford, Jr. et al.
patent: 3216107 (1965-11-01), Andreasson
Tool and Manufacturing Engineers Handbook, Fourth Edition, vol. 1, Machining, 1983, pp. 9-36 and 9-39.

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