摘要 |
PURPOSE:To eliminate defect of waving that occurs around a formed part and enlarge the degree of freedom of form designing by providing a heating device in a die corresponding to locally formed position and enabling to heat locally the formed part. CONSTITUTION:A heating device 5 is provided in a die 1 corresponding to locally formed part. The heating device 5 is formed electrically or by passing heating fluid in the die 1. In the cse of forming work which is flat in most part and locally including bulging out, drawing, bending or combination of the above, above-mentioned formed part is heated locally. By the dies 1, 2, defect of waving that occurs around the formed part is removed and the degree of freedom of form designing is enlarged. |