| 摘要 |
PROBLEM TO BE SOLVED: To provide manufacturing equipment for sheet metals which prevents the dislocation of holes as a first subject, and enables the production of box-type parts with high accuracy without the dislocation of holes and springback of bent portions as a second subject. SOLUTION: Regarding the first subject, the punches for punching are classified. Regarding the second subject in addition to the classification of the punches, a hit forming method or smoothing method is taken on the portions to be bent.
|
