NUMERICAL CONTROLLER HAVING FUNCTION TO SWITCH BETWEEN PRESSURE CONTROL AND POSITION CONTROL
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United States of America Patent
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N/A
Issued Date -
Sep 17, 2009
app pub date -
Dec 23, 2008
filing date -
Mar 11, 2008
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The numerical controller has function to switch between pressure control and position control, and comprises a numerical control unit and a servo control unit. While the servo control unit is controlling pressure, a servo position deviation amount corresponding to current actual speed of a control axis is set in the servo control unit. After the servo control unit switches to position control from pressure control, a number of pulses required for deceleration and stopping is output to an acceleration/deceleration processing unit of the numerical control unit according to an acceleration/deceleration time constant which is preset. The acceleration/deceleration processing unit outputs a moving amount for each distribution period to the servo control unit.
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