Drill grinding device

Details Drill grinding device Drill grinding device

1991-11-27

1993-05-18

Rachuba, M.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51173, 51219R, B24B 700

Patent

active

052109771

ABSTRACT:
In a drill grinding device with a grinding surface (7) disposed around a center axis (1), providing a conical grinding surface (8), a drill guide piece (11, 12) opposite the grinding surface with guide channels (13) which are parallel to the center axis for guiding the drills to the grinding surface, the guide channels at least approximately being tangent to an imaginary cylinder periphery (14) equiaxial to the center axis, which cylinder periphery touches the end of the grinding surface which is closest to the drill guide piece. Formation of steps in the grinding wheel due to wear is avoided by the guiding surface (8) forming a point-angled edge (10) at its end, which is closest to the drill guide piece (11, 12), together with the following surface portion (9) of the grinding surface (7).

REFERENCES:
patent: 3067548 (1962-12-01), Winslow
patent: 3579924 (1971-05-01), Saito
patent: 3742652 (1973-07-01), Enders
patent: 3753320 (1973-08-01), Wurscher
patent: 4574528 (1986-03-01), Wurcher
patent: 4676028 (1987-06-01), Kaczmarski
patent: 4858389 (1989-08-01), Wurscher

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