NUMERICAL CONTROLLER HAVING FUNCTION TO SWITCH BETWEEN PRESSURE CONTROL AND POSITION CONTROL

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 a...

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Bibliographic Details
Main Authors TSUJIKAWA KEISUKE, HISHIKAWA TETSUO
Format Patent
LanguageEnglish
Published 17.09.2009
Subjects
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PERFORMING OPERATIONS
PHYSICS
PUNCHING METAL
REGULATING
TRANSPORTING
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Summary: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.
Bibliography:Application Number: US20080343126