Device for indicating the touching of a grinding wheel and a wor

Details Device for indicating the touching of a grinding wheel and a wor Device for indicating the touching of a grinding wheel and a wor

1975-01-20

1976-06-29

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

511345, 5116592R, 73517A, B24B 4900

Patent

active

039656225

ABSTRACT:
A device for indicating the touching of a grinding wheel and a workpiece. On a shaft connected to a spindle of a grinding wheel there is fixed a radially slotted or gear wheel. On the shaft there is also rotatably mounted another identical slotted wheel, which is connected by means of a spring to the shaft, and a stable supporting plate provided with magnetic scanning heads situated over the respective gear wheels. The thus mounted slotted wheels, which are made of magnetic metal, such as steel, the scanning heads, and the phase meter function to detect changes in speed of the grinding wheel. The outputs of the scanning heads are connected to a phase meter, the output of which, after being amplified, controls the in-feed speed of the grinding wheel.

REFERENCES:
patent: 2381211 (1945-08-01), Crittenden
patent: 2753475 (1956-07-01), Curl
patent: 2961808 (1960-11-01), Dunigan
patent: 3136098 (1964-06-01), Backer
patent: 3443341 (1969-05-01), Honda

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