Small-sized drill grinding machine

Details Small-sized drill grinding machine Small-sized drill grinding machine

1985-10-23

1987-03-10

Olszewski, Robert P.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51219R, 51 98R, 51101R, B24B 300, B24B 500

Patent

active

046482091

ABSTRACT:
A drill grinding machine of bench type wherein a drill can be ground by a required amount automatically and accurately. The grinding machine comprises a rotor installed adjacent to a turntable, first and second transmission shafts connected to each other so that they cannot be rotated relative to each other but so that they can be moved relative to each other axially, and a grinding wheel drive lever with one end threadedly coupled to the first transmission shaft. The rotor is rotated by a prescribed amount for each revolution of the turntable. The rotational movement of the rotor is converted into the rotational movement of the second and first transmission shafts, and is then converted into rotational movement of the grinding wheel drive lever, whereby the grinding wheel is displaced to effectively provide drill infeed and the depth setting for sharpening of the next revolution the drill is automatically increased.

REFERENCES:
patent: 3224146 (1965-12-01), Ahlstrom
patent: 3274736 (1966-09-01), Brokaw
patent: 3822511 (1974-07-01), Hoglund

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