METHOD FOR PROCESSING DIE FOR OPTICAL ELEMENT, MOLDING DIE, AND OPTICAL ELEMENT

摘要

Provided is a method for machining a die, wherein rotation of a tool is not required, a processing machine which performs linear two-axis operation is used, and both side surfaces of a solid structure of a molding surface of the die can be easily and symmetrically processed without interference of the tool. A processing position is reversed without rotating the direction of a blade edge (23a) of a cutting tool (23), which greatly influences process accuracy. Thus, while eliminating interference between the cutting tool (23) and a work (W), both side surfaces (SS1, SS2) of a solid structure (SA2) can be symmetrically processed by sandwiching an axis parallel to the center axis (RA) of the work (W).