发明名称 MULTIPLE PUNCH AND DIE ASSEMBLY PROVIDING HAND DISASSEMBLY, PUNCH LENGTH ADJUSTMENT AND REPLACEMENT
摘要 <p>A multiple punch and multiple die assembly has a workpiece protector comp rising a punch lifter that is operatively associated with each punch for sup porting each of the punches in an inactive position as an active punch is mo ved by the ram to the active, i.e. operating position to thereby eliminate s coring or marking of the sheet material or other workpiece that is being pun ched. To eliminate the need for hand tools and hand assembly or disassembly, a manually moveable retainer on the punch assembly is provided that can be moved by hand between a punch-releasing and punch-retaining position for hol ding the punches within the multi-punch assembly during operation. To preven t stress fractures that formerly occurred in die carriers, support of each d ie is distributed between two different die components thereby reducing impa ct stress on the carrier as the ram drives the punch through the workpiece.< /SDOAB></p>
申请公布号 CA2664784(A1) 申请公布日期 2008.04.24
申请号 CA20072664784 申请日期 2007.06.07
申请人 MATE PRECISION TOOLING, INC. 发明人 THIELGES, BRUCE M.;SCHNEIDER, JOSEPH C.
分类号 B26D5/08 主分类号 B26D5/08
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