Gear skiving cutter and designing method thereof

A designing method of a gear skiving cutter, the gear skiving cutter is used to perform skiving process on a gear workpiece, the designing method comprising:

• constructing a cutter manufacturing tool and a base material for the gear skiving cutter, wherein the cutter manufacturing tool includes a plurality of tooth structures, a center of each tooth structure corresponds to a base plane and each tooth structure includes a first side portion and a second side portion opposite to the first side portion, the first side portion forms a first grinding allowance structure raised toward the base plane and the second side portion forms a second grinding allowance structure raised toward the base plane, wherein the first grinding allowance structure is different from the second grinding allowance structure, so that each tooth structure forms an asymmetrical structure based on the base plane;
• and
• simulating relative movements of the cutter manufacturing tool and the base material based on a relative motion coordinate system, so that the plurality of tooth structures of the cutter manufacturing tool contact the base material to perform a surface processing, so as to form a plurality of cut teeth on the base material, wherein each cut tooth includes an outer contour and a rake plane formed at an end of the outer contour, and each rake plane including a rake angle and a side edge angle.