Gear tooth profile simulation apparatus and method and cutting tool cutting surface simulation apparatus and method

摘要

A simulation device (100) comprises: a memory (110) for providing information about the shape of a workpiece (20), information about a cross section (S) of a portion of the workpiece (20) that requires simulation and which is inserted into a gear (21A ) and to store information about definition points P (k) indicating the shape of a cutting surface (11b) of each cutting edge (11) of a cutting tool (10); a first calculating means (120) for performing a calculation to obtain passing points in a three-dimensional coordinate system at which the definition points will pass through the cross section (S) during gear processing; second calculating means (130) for causing the cross section in the three-dimensional coordinate system to be arranged parallel to a plane defined by predetermined two of the axes of the three-dimensional coordinate system, thus converting the passing points in the three-dimensional coordinate system into passing points in a two-dimensional coordinate system Coordinate system to be converted; and third calculating means (140) for determining, in accordance with the passing points in the two-dimensional coordinate system, the shape of a tooth profile (21b) to be formed on the workpiece (20) in the two-dimensional coordinate system.