Tracing control system

Abstract

Abstract A tracing control system for machining a workpiece through tracing by calculating speed commands of respective axes, using change amounts detected by a tracer head, and by moving a cutter relative to the workpiece through a control of the speed of the respective axes in accordance with the speed commands. First delay speed commands are obtained from the speed commands (Vx, Vz) at delay circuits (14a, 14c), respectively, and second delay speed commands are obtained at second delay circuits (14b, 14d), respectively, the differences between the first delay speed commands and the above second delay speed commands are calculated, and an X-axis main motor and a Z-axis main motor are driven in accordance with the first delay speed commands, and an X-axis sub-motor and a Z-axis sub-motor are driven in accordance with the calculated differences, thereby move the tracer head. As a result, the tracer head always precedes the cutter, and when the tracer head comes to a corner and the axis speed is reduced, the precedence amount of the tracer head is canceled out (relatively returned) by the amount corresponding to the speed reduction. This return amount can be made equal to the amount of over-run of the tracer head, and therefore, the amount of movement of the cutter is reduced by this over-run amount of the tracer head, to thereby prevent overshot machining.

Inventors

• 👤 Hitoshi Matsuura
• 👤 Hitoshi Aramaki

Bibliographic Details