发明名称 PURESUNUKIKAKODETASHURUINOPATAANOKAKOSURUHOHOOYOBISONOSOCHI
摘要 <p>A method and apparatus for press-cutting selected patterns in a workpiece. The apparatus includes a plurality of dies and at least one punch element associated with each die. A plurality of backing plates are provided to drive the punch elements against the workpiece when the backing plates are positioned in the operative position. A press-cutting pattern selector selectively positions the backing plates in the operative position or an inoperative position depending upon the pattern to be press-cut.</p>
申请公布号 JPH0234255(B2) 申请公布日期 1990.08.02
申请号 JP19850131310 申请日期 1985.06.17
申请人 TOKAI RIKA CO LTD 发明人 NISHIKAWA TAKEHIKO;ITO YASUO;HISAMATSU YOSHUKI;TANI NAOKI
分类号 B21D28/00;B21D28/24;B21D53/42;B26F1/04 主分类号 B21D28/00
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