| 摘要 |
An elongated punch arrangement for a punch press assembly for punching a sheet metal plug through a die. The punch arrangement comprises an elongated punch having a distal end and a proximal end. A bore is longitudinally arranged in the elongated punch. An elastomeric insert is securably disposed within the bore. The insert has a distal end extending distally beyond the distal end of the punch. The distal end of the insert preferably comprises at least three dome shaped extensions for pressing engagement of a plug during movement of the punch within the die during the punching operation.
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