Drill point grinding machine

Details Drill point grinding machine Drill point grinding machine

1980-06-24

1982-12-28

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51124R, 51267, B24B 326

Patent

active

043654444

ABSTRACT:
A drill point grinding machine having a selectively positionable workhead rotatably supporting a drill to be ground and a rotary grinding wheel that is positionable toward and away from the workhead. The machine has a control for selectively moving the workhead such that a drill carried thereby undergoes a first cyclic path of engagement with the grinding wheel for grinding a first drill point form and a second cyclic path of contact with the grinding wheel when a second drill point form is to be ground. The control is further selectively operable for causing the workhead to move a drill successively through said first and second cyclic paths for grinding a third drill point form. The machine control also is adapted to automatically move the workhead in the foregoing manner, as well as automatically advancing the grinding wheel to a position in close proximity to the drill prior to the grinding operation and then automatically feeding the grinding wheel a further predetermined amount during grinding.

REFERENCES:
patent: 3040480 (1962-06-01), Winslow et al.
patent: 3114988 (1963-12-01), Garrison
patent: 3209493 (1965-10-01), Houser
patent: 3266194 (1966-08-01), Winslow
patent: 3543445 (1970-12-01), Borchert
patent: 3543451 (1970-12-01), Smith
patent: 3712001 (1973-01-01), Kaesemeyer
patent: 4084357 (1978-04-01), Moses

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