System for correcting positional error in numerical control devices
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United States of America Patent
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Apr 30, 1985
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N/A
app pub date -
Sep 25, 1981
filing date -
Sep 25, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A positional error correction system applicable to a numerical control for controlling a machine tool along more than one control axis, such as along X and Y control axes. If the machine tool is to be positionally controlled along the X-axis, the position of the machine tool along the X-axis is corrected by a correction factor which is a function of the position of the machine tool along that axis and the position of the machine tool along the Y-axis, thus providing highly accurate position correction. The position error correction system is not restricted to merely the X and Y axes and can include control of a Z-axis. In such a case the positional correction is performed using a correction factor which is a function of the machine tool position along all three axes.
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