Numerical controller

Details Numerical controller Numerical controller

2006-02-14

2006-02-14

Gandhi, Jayprakash N. (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C700S159000, C451S005000, C493S002000

Reexamination Certificate

active

06999844

ABSTRACT:
A numerical controller for performing an machining operation by controlling relative position of a workpiece and a tool in synchronism with a rotational position of a rotational axis to which the workpiece or the tool is attached, without causing time delay of position control of the tool relative to the workpiece in varying a rotational velocity of the rotational axis. A rotational position θi(i=0, 1, . . . ) of a workpiece on the rotational axis, a position (Xi, Zi) of the tool relative to the workpiece when the workpiece is at the rotational position θi, and the rotational velocity Viof the workpiece from the rotational position θito the rotational position θi+1are set in advance. Time Tirequired for rotating the workpiece from the rotational position θito the rotational position θi+1at the rotational velocity Viis obtained. Velocities Vxiand Vziof the workpiece are obtained so that the position of the workpiece reaches the next set position (Xi+1, Zi+1) in the time Ti. Servomotors for the spindle, the X-axis and the Z-axis are driven at the set velocity or the calculated velocities to provide relative motions to the workpiece and the tool for the machining operation.

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Notification of Grounds for Rejection for corresponding Japanese Application No. 2002-277182 mailed Dec. 7, 2004.

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