METHOD FOR PRODUCING THREE-DIMENSIONAL MOLDING

摘要

A metal optical molding processing machine (1) comprises a powder layer forming section (2), a section (3) for irradiating a light beam (L), a correction target (4) to which a correction mark becoming the reference for correcting the light beam irradiating position is put, and a camera (5) for imaging the position of the correction mark. The correction target (4) is made of such a material as dissolving through irradiation with the light beam (L) and a through hole is made. The correction target (4) is mounted on a molding plate (23) and irradiated with the light beam (L) thus putting a correction mark (7) while penetrating the correction target (4). Thereafter, the correction mark (7) is imaged by means of the camera (5) and the position of the correction mark (7) is measured in order to correct the irradiating position. Since the correction mark (7) is formed while penetrating, contrast becomes clear, the position of the correction mark (7) is measured easily, and the irradiating position of the light beam (L) can be corrected easily.