Method of grinding for a vertical type of double disc...

Details Method of grinding for a vertical type of double disc... Method of grinding for a vertical type of double disc...

2005-04-19

2005-04-19

Hail, III, Joseph J. (Department: 3723)

Abrading

Abrading process

Side face of disk

C451S028000, C451S041000, C451S177000, C451S190000, C451S194000, C451S261000, C451S262000

Reexamination Certificate

active

06881133

ABSTRACT:
A double surface grinding method for a vertical type of double disc surface grinding machine in which upper and lower ground surfaces of a work like a disc brake are ground simultaneously. The entire vertical moving stroke of the grinding wheel includes an idle feed stroke in which the wheel moves at a specified idle feed speed from the waiting position to a detection start position before contacting with the ground surface; a detection stroke in which the wheel moves at a detection speed lower than the idle feed speed from the detection start position to a detection end position after contacting with the ground surface then the wheel detects a grinding start position; and a grinding stroke in which the wheel moves at a grinding speed from the grinding start position to a grinding end position. The grinding start position is set to a position corresponding to a time where a current of the grinding wheel rotation drive motor detected during the detection stroke increases from a value at no-load condition up to a specified value.

REFERENCES:
patent: 3721046 (1973-03-01), Dunn
patent: 4782631 (1988-11-01), Nishio
patent: 6485357 (2002-11-01), Divine
patent: 47-002195 (1972-02-01), None
patent: 63-047065 (1988-02-01), None
patent: 06-278021 (1994-10-01), None
patent: 8-504368 (1996-05-01), None
patent: 11-207579 (1999-08-01), None

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