| 摘要 |
PURPOSE:To promote a machining shape of the first model to agree with the machining shape of the second model, by relatively moving the second cutter and a work through an addition signal summing up an output signal of an error voltage generating means, integration output signal of said output signal and a speed signal from a copying arithmetic circuit. CONSTITUTION:Integrators 21X, 21Z integrate output signals of amplifiers 20X, 20Z to be added to adders 22X, 22Z, and the adders 22X, 22Z sum up output signals of the integrators 21X, 21Z and the amplifiers 20X, 20Z to be added to adders 14X, 14Z. And in the adders 14X, 14Z, speed signals VX, VZ from an arithmetic circuit 7 and output signals of the adders 22X, 22Z are summed up and added to driver circuits 15X, 15Z, here their output signals drive motors 16X, 16Z. In this way, a position of the second cutter 11 can be equalized to the position of the first cutter with no steady error being generated between the positions of the first cutter 4 and the second cutter 11 even when counters 18X, 18Z count a small value.
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