Precision drill bit resurfacing tool

Details Precision drill bit resurfacing tool Precision drill bit resurfacing tool

1981-07-23

1983-10-25

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51127, 51216ND, 51219PC, 51 5D, B24B 328

Patent

active

044111053

ABSTRACT:
The drill grinder includes a drill bit holder mounted for movement about a swing axis provided by a rocker arm. The swing axis parallels the plane of the grinding wheel. An index ring mounted on the holder provides precise indexing of the drill bit. The extent of micrometric feed movement of the rocker arm is precisely marked so that such movement can be exactly duplicated as to all lip surfaces, thus achieving a symmetrically surfaced drill bit. These structures are integrated in a system that provides simple adjustment for drill bit size, clearance angle and contour control of lip surface.

REFERENCES:
patent: 2321383 (1943-06-01), Harper
patent: 2580884 (1952-01-01), Bowman
patent: 2614370 (1952-10-01), Kapnick
patent: 2632983 (1953-03-01), Kapnick
patent: 2701432 (1955-02-01), Kent
patent: 2902800 (1959-09-01), Hoberecht
patent: 3073076 (1963-01-01), French
patent: 3197924 (1965-08-01), Mitchell
patent: 3482325 (1969-12-01), Mitchell
patent: 4142332 (1979-03-01), Clarke

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