Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1986-10-30
1987-12-08
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51238S, B24B 4902
Patent
active
047110546
ABSTRACT:
In a numerical control grinding machine using a grinding wheel made of cubic boron nitride, a computerized numerical controller controls the infeed movement of a wheel head to effect a rough grinding and a first fine grinding on a rotating cylindrical workpiece by the grinding wheel and to halt the first fine grinding in response to a sizing signal from a sizing device which measures the diameter of the workpiece being ground. At the halt of the first fine grinding, the numerical controller advances rest jaws to press the workpiece upon the grinding wheel until another sizing signal is issued from the sizing device. Until the number of the workpieces ground after each truing operation reaches a predetermined number, the numerical controller increase the infeed rate of the grinding wheel in each of the rough and first fine grindings toward a desired infeed rate on a step-by-step basis. Further, the numerical controller diminishes a set size which determines the time point to issue the first-mentioned sizing signal from the sizing device, toward a desired set size on a step-by-step basis with the increases in number of the workpiece ground after each truing.
REFERENCES:
patent: 3934376 (1976-01-01), Tamesui et al.
patent: 3967414 (1976-07-01), Tamesui et al.
patent: 4201016 (1980-05-01), Kirk
patent: 4205492 (1980-06-01), Matsuura
patent: 4324073 (1982-04-01), Belthle
Oda Yukio
Shinmura Yoshinori
Tsujiuchi Toshio
Toyoda Koki Kabushiki Kaisha
Whitehead Harold D.
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