Method for controlling machining process of workpiece
AssigneeTDK Corporation
InventorsTomoyuki Yoshida, Noritsugu Kakegawa
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Abstract
A method for controlling a machining process of a workpiece includes a step of measuring amounts of machining of the workpiece by a plurality of sensors located at different positions on the workpiece, the sensors providing detection signals which represent the respective measured amounts, a step of removing the detection signal when the detection signal has an abnormal value which is extremely different in comparison with values of the other detection signals by using a smoothing method, and a step of controlling the machining of the workpiece depending upon the remaining detection signals from the sensors.
Claims9
A method for controlling a machining process of a workpiece comprising the steps of:
- measuring amounts of machining of the workpiece by a plurality of sensors located at different positions on the workpiece, said sensors providing detection signals which represent respective measured amounts;
- removing a detection signal when the detection signal has an abnormal value which is extremely different in comparison with values of the other detection signals by using a smoothing method;
- and
- controlling the machining of the workpiece depending upon the remaining detection signals from said sensors, wherein said removing step includes a step of calculating each rate of change between values of the detection signals of adjacent two sensors with respect to a distance between said adjacent two sensors, and a step of determining removal of the detection signal of each sensor depending upon a difference in the rates of change of said each sensor with respect to two sensors adjacent to said each sensor.
A method for controlling a machining process of a workpiece comprising the steps of:
- measuring amounts of machining of the workpiece by a plurality of sensors located at different positions on the workpiece, said sensors providing detection signals which represent respective measured amounts;
- removing a detection signal when the detection signal has an abnormal value which is extremely different in comparison with values of the other detection signals by using a smoothing method;
- and
- controlling the machining of the workpiece depending upon the remaining detection signals from said sensors, wherein said removing step includes a step of calculating an average value, a standard deviation and a regression line of values of the detection signals, a step of determining removal of the detection signal when a value of said detection signal is out of a range from the calculated regression line, said range being predetermined in accordance with a required precision for machining the workpiece, and a step of omitting the detection signal when said determining step determines the removal of the detection signal.
Dependencies are inferred from the claim text.