Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1974-10-22
1976-01-27
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
B24B 4904
Patent
active
039343766
ABSTRACT:
An apparatus for controlling the timing for slowing down the feed of a grinding wheel on a grinding machine against work to enable the wheel to effect a finish cut on the work, in relation to a gradual reduction in the cutting performance of the wheel. The apparatus essentially comprises means for moving the grinding wheel reciprocally relative to the work at a variable speed; a device for measuring the diameter of the work at a plurality of different diametral positions thereof during each cycle of grinding operation and producing a corresponding number of signals each at one of those diametral positions; and an electric circuit adapted to cause the slowing down of the wheel feed upon receiving one of the signals except the last one from the measuring device, while comparing with a predetermined value the time elapsed or the number of pulses counted between receipt of the one signal and the last signal during one cycle of grinding operation and causing the slowing down of the wheel feed during another cycle of grinding operation upon receiving another signal that is produced earlier than the one signal if the above time or number of pulses is exceeded by the predetermined value.
REFERENCES:
patent: 2267391 (1941-12-01), Astrowski
patent: 3717962 (1973-02-01), Kusakabe
patent: 3793775 (1974-02-01), Ishikawa
Matsuzaki Tetsuo
Tamesui Tuyoshi
Toyoda Koki Kabushiki Kaisha
Whitehead Harold D.
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