Grinding method and apparatus

Details Grinding method and apparatus Grinding method and apparatus

1975-05-09

1977-04-26

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116577, 5116593, B24B 4900

Patent

active

040192881

ABSTRACT:
A method of feed grinding workpieces comprises moving a workpiece into pressure contact with a grinding wheel and rotationally driving the grinding wheel relative to the workpiece at a predetermined speed of rotation different than the resonant frequency of the grinding wheel spindle assembly to effect feed grinding of the workpiece. Completion of the feed grinding or spark-out is detected after which the rotational speed of the grinding wheel is lowered to another predetermined speed different than the resonant frequency of the grinding wheel spindle assembly when operating in the spark-out mode. The high speed rotation during feed grinding assures good grinding quality and the low speed rotation during spark-out assures good surface finishing. By rotating the grinding wheel spindle assembly at speeds other than its resonant frequencies, damage due to large vibrations of the assembly is avoided.

REFERENCES:
patent: 2994995 (1961-08-01), Griffith
patent: 3798846 (1974-03-01), Smith

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