Cone drill bit

Details Cone drill bit Cone drill bit

1984-06-05

1987-12-01

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

With means to condition tool

408 835, 408227, B23B 5100

Patent

active

047100729

ABSTRACT:
The countersink to form a conical chamfer at the mouth of a bore hole has a conical chamfering head, on which three separate cutting plates are arranged, symmetrically, the cutting plates being fastened to the chamfering head, but removable and changeable. A compatible sharpening device permits the introduction and mounting of the cutting plates, wherein the sharpening device has the same form or shape as the countersink, so that it is easy to resharpen the cutting plates to their original specifications.

REFERENCES:
patent: 989119 (1911-04-01), Clouse
patent: 1127175 (1915-02-01), Brooks
patent: 1592092 (1926-07-01), Forster
patent: 1825007 (1931-09-01), McNaught
patent: 2041587 (1936-05-01), Beard
patent: 4293254 (1981-10-01), Markovics

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