| 摘要 |
A press system is provided to increase holding strength of material by making an outer machined surface of a material panel to have wavy curve with a regular pitch. A press system comprises a lower mold punch(101) mating to the lower end surface shape of a product panel, mounted on the bolster of the lower part; a blank holder(107) mounted on bolster to the outside the lower mold punch through a cushion pin; an upper mold mating to the top of a product panel on the top of the lower mold punch, mounted on an upper slider; a beveled protrusion(3) protruded perpendicularly along the edge of the lower mold punch; and a holding strength regulating instrument(1) formed with a beveled groove(5) along the edge of the top mold in order for the beveled protrusion to be fitted into it.
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