Program creation apparatus, numerical control apparatus, program creation method

摘要

An NC programming assisting apparatus that creates an NC machining program reflecting dimensional tolerance data on shape data of a machining subject includes a machining target dimension calculation unit that calculates machining target dimensions of the machining subject based on the shape data and the dimensional tolerance data; a shape data deform processing unit that sets post-movement positions of graphic elements based on positional movement information about how to move the graphic elements, the machining target dimension, and the shape data so that a dimension between graphic elements included in the shape data conforms to the corresponding machining target dimension; and an NC machining program generation processing unit that creates an NC machining program by using the shape data and the post-movement position of each graphic element.