| 摘要 |
A springback amount evaluation method according to the present invention: has a section plane setting step S1 of setting a plurality of section planes intersecting a shape of a press forming product at predetermined intervals, a sectional shape obtaining step S3 of obtaining a sectional shape of the press forming product for each of the set section planes, and a sectional shape direction obtaining step S5 of obtaining an orientation of the each sectional shape in each section plane as a direction of the each sectional shape; performs, for each of a shape to be a reference of the press forming product and a shape after die release, the section plane setting step S1, the sectional shape obtaining step S3, the sectional shape direction obtaining step S5 or a position identifying point coordinate obtaining step S7; and includes a springback amount evaluation step S9 of evaluating an amount of springback by comparing the obtained directions of the sectional shapes for the shape to be the reference and the shape after the die release, for all of the section planes. |
