| 摘要 |
Two shafts whose moving directions do not intersect orthogonally with each other are set, then any one shaft of two shafts as an oblique reference shaft is set, then information based on an angle between two shafts whose moving directions do not intersect orthogonally with each other are set, then a first program orthogonal coordinate system constructed such that a moving direction of the oblique reference shaft coincides with a command axis direction of the program orthogonal coordinate system and a second program orthogonal coordinate system constructed such that a moving direction of another shaft other than the oblique reference shaft coincides with a command axis direction of the program orthogonal coordinate system are set, and then any one of the first program orthogonal coordinate system and the second program orthogonal coordinate system is selected. Accordingly, the optimum tool can be selected to meet to the process pattern and the process can be executed by the optimum shaft feed, and thus the processing precision can be improved. <IMAGE>
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