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Punch Mechanism

IP.com Disclosure Number: IPCOM000081738D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Powell, C: AUTHOR

Abstract

Holes are difficult to form in polymeric material having metal reinforcing wires embedded therein, because conventional drills or punches tend to cause shifting of the wires during formation of the hole. This slippage can be overcome by using a die 1 and movable stripper 2, each having an annular boss 3 thereon and aligned opposite each other. Thus, when the punch 4 is to be actuated, the stripper 2 moves down and the reinforced material 5 is tightly gripped around the entire circumference of the punch, thereby substantially reducing or eliminating the tendency of the reinforcing wires 6 to move to one side.

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Punch Mechanism

Holes are difficult to form in polymeric material having metal reinforcing wires embedded therein, because conventional drills or punches tend to cause shifting of the wires during formation of the hole. This slippage can be overcome by using a die 1 and movable stripper 2, each having an annular boss 3 thereon and aligned opposite each other. Thus, when the punch 4 is to be actuated, the stripper 2 moves down and the reinforced material 5 is tightly gripped around the entire circumference of the punch, thereby substantially reducing or eliminating the tendency of the reinforcing wires 6 to move to one side.

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