| 摘要 |
PURPOSE:To execute with a high accuracy a deep drawing press forming to a material to be worked, by deforming the material to be worked by following a surface shape of a punch, between a high viscosity substance packed in a cavity of a die and the punch made to enter into the cavity. CONSTITUTION:A high viscosity substance 9 such as silicone or vinyl chloride sealant, etc. is filled in a cavity 8 opened toward the upper part of a die 2 fixed to the floor, and a material 13 to be worked such as a metallic plate, etc. is placed on the die 2 through a holding plate 10. A punch 4 installed so as to be opposed to this die 2 is lowered by a press ram (omitted in the figure) through a nitron die 3, energized downward by a rod 6, and said object 13 to be worked is pressed and fixed onto the holding plate 10 by a holding plate 5 guided by a guide rod 7. Subsequently, the punch 4 is faced in the cavity 8, air in a space S is exhausted from an air exhaust valve 12 and a through-hole 11, and the material 13 to be worked is pressed and formed by a back pressure of the high viscosity substance 9, between the punch 4 and the high viscosity substance 9, and formed to a shape adapted to a shape of the punch 4.
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