Drill grinder having drill holder including chucks for gripping

Details Drill grinder having drill holder including chucks for gripping Drill grinder having drill holder including chucks for gripping

1987-10-07

1989-08-29

Olsewski, Robert P.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116579, 51219PC, 51288, 279 1DC, 279 52, B24B 1916

Patent

active

048604976

ABSTRACT:
A drill grinder for grinding a point of a drill including a shank, and a body which has the point. The drill grinder includes a holding device for removably holding the drill, and a grinding wheel adapted to be forced on the drill point, and to thereby grind the point while the drill is held by the holding device. The holding device includes a first chuck for gripping the shank of the drill, and a second chuck for gripping the body of the drill. The grinder has a holder mounting device for removably holding the holder device during a grinding operation on the drill by the grinding wheel. The grinder may further includes a drill setting device for removably accommodating the holding device, to position the drill in a predetermined circumferential position relative to the second chuck, prior to the grind operation.

REFERENCES:
patent: 2313641 (1943-03-01), Hoerst
patent: 3621613 (1971-11-01), Grob et al.
patent: 3626436 (1971-12-01), Lhomme et al.
patent: 3916570 (1975-11-01), Caley
patent: 4001975 (1977-01-01), Bernard et al.
patent: 4468891 (1984-09-01), Giebmanns
patent: 4485596 (1984-12-01), Bernard et al.
patent: 4642942 (1987-02-01), Guhring

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