| 摘要 |
PURPOSE:To mold with a high accuracy a press die having a minute stepped part by sticking a back cutting piece to a back cut shape part of a projecting die, aligning it with a recessed die, and correcting a size of the recessed die base on said die alignment as a reference. CONSTITUTION:A back cutting gauge 5 is made to contact to back cutting upper faces 3a, 3b of a projecting die 3, and measuring a shape size of a back cut sahpe part, the projecting die 3 is molded. A back cutting piece 6 made of a polyurethane resin, etc. is stuck to the back cut shape part of this projecting die, and it is aligned with a recessed die 4. The shape size of the back cut shape part is corrected, based on this back cutting piece 6 as a reference. The back cutting gauge 5 consists of an upper stage block 5a and a lower block 5b. A separated size of both the blocks 5a, 5b, and a size difference in the height direction of the lower faces of both the blocks 5a, 5b are set to a size equal to a back cut depth t2 of the projecting die 3. According to this method, a manufacturing accuracy of the back cut shape part of the projecting die 3 and the recessed die 4 can be improved. |
