Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1987-09-03
1989-10-17
Olszewski, Robert P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51 97NC, 51105EC, 36447406, B24B 5100
Patent
active
048737933
ABSTRACT:
A numerically controlled machine tool for machining a non-circular workpiece according to profile data. The servomotor drive unit of the machine tool includes a frequency voltage converter which outputs a velocity compensation signal proportional to the frequency of position command pulses in the servomotor drive units. A position error signal is modulated by the velocity compensation signal. The numerical controller of the machine tool can measure the position error and phase error, and can compensate for these errors. The numerical controller operates according to ideal profile data and measures the actual position change of a tool slide corresponding to the angle position change of a main spindle. Then, the numerical controller calculates the position error and phase error depending on the actual position change and ideal profile data, and produces execution profile data which are compensated for position error. During machining operation, the numerical controller offsets the rear out position of the execution profile data by the calculated phase error so as to eliminate the phase error.
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Asano Hiroaki
Ishihara Nobuhiro
Maruyama Toshio
Ohta Norio
Tsujiuchi Toshio
Deesai Shirish
Olszewski Robert P.
Toyoda-Koki Kabushiki-Kaisha
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