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Method for press punching a hole in sheet metal and press die
Method for press punching a hole in sheet metal and press die
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机译:在钣金上冲压孔的方法和冲压模具
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摘要
A punch unit for a press die is provided for punching a hole in sheet metal. The punch unit includes a piercing punch provided with a sharp projection, a plunger for pressing the piercing punch, a cylinder for supporting the piercing punch and the plunger slidably in a punching direction, and a coil spring for retracting the piercing punch and the plunger. Also disclosed is a press die for punching a hole in sheet metal using the punch unit.
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