发明名称 PIERCING DIE
摘要 PIERCING DIE The subject piercing die is particularly adapted for piercing a hole in a blank having an open interior and an outer wall defining a closed figure. The piercing is done from the interior of the blank through the wall to the outside of the blanks. The piercing die includes a base with a slide movably mounted on the base. A guide is movably connected to the slide to control movement of the slide to a straight line movement. A female die having a blank receptacle for holding the blank is mounted on the base. The female die has a cutting aperture extending through a portion of the female die and intersecting the blank receptacle. A male die is mounted on the slide and is positioned within the blank receptacle for mating with the cutting aperture to cut a hole in a blank positioned in the receptacle. The male die cuts hole in the blank from the interior of the blank through the outer wall to the outside of the blank. A cam is connectable to the slide for moving the male die toward the female die to engage the blank and to cut the hole in the blank.
申请公布号 CA1295234(C) 申请公布日期 1992.02.04
申请号 CA19870550718 申请日期 1987.10.30
申请人 GRUCHALSKI, HENRY 发明人 GRUCHALSKI, HENRY;GRUCHALSKI, ALBERT
分类号 B21D28/28;B21D28/30;B21D28/34 主分类号 B21D28/28
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