Numeric controller
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsMakoto Sakagami, Masaki Ryu
Life of this patent
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Abstract
A chopping control process, for controlling a machine tool during chopping, i.e., shaping or cutting a workpiece, is allowed without adding an extra axis dedicated just to the chopping, i.e., a chopping dedicated axis. To correct a chopping operation (i.e., an operation of shaping or cutting a workpiece), for a movement error in the contour control (i.e., control of contour along which the workpiece is cut) with a positioning axis or rotation axis, an interpolation processing part 12 and an axis control processing part 13 are provided with a function of generating the movement data for performing the chopping operation by controlling two or more axes at the same time and a function of correcting the chopping operation.
Claims5
A numerical control apparatus for controlling a machine tool to shape a workpiece, the numerical control apparatus comprising:
- a chopping movement data generating means for performing a contour control, to control a contour along which the workpiece is cut, by controlling two or more control axes, and for generating movement data of the machine tool for performing a chopping operation, for cutting and shaping the workpiece, by controlling said two or more control axes at the same time as performing the contour control, and
- correction means for correcting a servo delay of each of said control axes to perform the chopping operation at the same time while performing the contour control,
- wherein said correction means corrects the servo delay of each of two or more of said control axes to perform the chopping operation at the same time while performing the contour control, so as to acquire a servo delay amount of each of said control axes by comparing an actual position feedback information for each of said control axes performing the chopping operation at the same time while performing the contour control with a command value, and
- wherein, said correction means also synthesizes said acquired servo delay amount of each of said control axes, and distributes said synthesized servo delay amount to a chopping interpolation vector and a contour control interpolation vector.
A numerical control apparatus for making a contour control of a machine tool to shape a workpiece, by controlling two or more control axes, the numerical control apparatus comprising:
- chopping movement data generating means for generating movement data of the machine tool for performing a chopping operation, for cutting or shaping the workpiece, by controlling said two or more control axes at the same time while performing the contour control to control a contour along which the workpiece is cut, and
- correction means for correcting a servo delay of each of said control axes to perform the chopping operation at the same time while performing the contour control,
- wherein said correction means corrects the servo delay of each of two or more of said control axes to perform the chopping operation at the same time while performing the contour control, so as to acquire a servo delay amount of each of said control axes by comparing an actual position feedback information for each of said control axes performing the chopping operation at the same time while performing the contour control with a command value, and
- wherein, said correction means also synthesizes said acquired servo delay amount of each of said control axes, and distributes said synthesized servo delay amount to a chopping interpolation vector and a contour control interpolation vector.
Dependencies are inferred from the claim text.