THREE-DIMENSIONAL SHAPING METHOD

摘要

PURPOSE:To prevent the internal stress accompannied by the curing of a resin from deviating in a definite direction by changing the direction of the internal stress at every cross section layer to disperse the same as the whole of a molded product by scanning a photo-setting resin at a parallel equal interval by laser beam and relatively rotating a scanning direction at an arbitrary angle. CONSTITUTION:A desired three-dimensional shape is formed in a threedimensional CAD system 1 and converted to an STL format to be sent to an NWS 2. The EWS 2 cuts data on a Z-axis at an equal interval DELTAZ in parallel to an XY plane and the desired three-dimensional shape is displayed as the aggregate of the data of respective cross-sectional shapes. A forming stand 13 positioned in a photo-setting resin 7 so as to be set under the liquid level of the resin 7 by the interval DELTAZ of a cross section and covered with a liquid photo-setting resin layer with a thickness DELTAZ. The surface of the photo-setting resin is scanned in the shape corresponding to the cross-sectional shape of the lowermost part by the laser beam from a laser XY scanner 4 and the surface resin layer is cured to shape the lowermost cross-section layer on the forming stand 13.