| 摘要 |
<p>Means (9) draws three-dimensional images according to graphic information of products, and means (11) displays essential dimensions and tolerances for the three-dimensional images. Means (15) displays a testpiece (TP) that has been made beforehand of the same material as the product. Trial bending is given to the testpiece (TP), and the angles of the bend are measured by an angle-measuring instrument (25) before and after unloading, and setting means (17) determines the amount of springback based on the difference between the measured angles before and after unloading. Means (19) determines a target D value for a target angle of bending according to the amount of springback so that actual bending is carried out.</p> |
