| 摘要 |
A trajectory extracting step (S2) of extracting a relative movement trajectory of each convex tooth pin (12b) of a mating gear (12) with respect to a concave-convex gear (15) at the time when torque is transmitted between the mating gear (fixed shaft) (12) and the concave-convex gear (nutation gear) (15) and a machining step (S4) of, when the concave-convex gear (15b) is machined on a concave tooth forming face of a disc-shaped workpiece on which the concave teeth (15b) have not been machined, moving at least one of the disc-shaped workpiece and a working tool such that a relative movement trajectory of the working tool with respect to the disc-shaped workpiece coincides with the relative movement trajectory of each convex tooth pin (12b) with respect to the concave-convex gear (15), extracted in the trajectory extracting step, are included. |
