| 摘要 |
PURPOSE:To enable copying in a single direction by applying the constitution wherein a reference displacement at the time of contour copying in a return process is set to 1/n of a reference displacement at the time of contour copying in an advance process. CONSTITUTION:A reference displacement at the time of copying a contour in a return process (clockwise direction) is set to 1/n or, for example, to 1/3 of a reference displacement epsilon0 in an advance process (counter-clockwise direction). As a result, it epsilon0=600mum, the reference displacement in the return process becomes 200mum, and a stylus ST and a cutter move in a reverse direction, afloat by 400mum compared with a height in the advance process, along PT1...PTi of the advance route. And no machining takes place in the return process. Namely, machining takes place only in the advance process. Consequently, machining is free from a mixture of up-cuts and down-cuts, and efficient machining is ensured.
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