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US 2020/0398453 A1Published application
Die cutting insert and method for cutting sheet metals
OwnerStephen John PAULinventor
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Abstract
The present invention relates to a die cutting insert comprising a punch shoe having an angled guide surface. The die cutting assembly further comprises a trim punch arranged at least partly along the angled guide surface, such that the trim punch is movable along the angled guide surface between a first, extended position and a second, retracted position. In further aspects, the invention relates to a die cutting assembly and a method of cutting sheet metals.
Claims20
A die cutting insert comprising:
- a punch shoe having an angled guide surface;
- a trim punch arranged at least partly along the angled guide surface, such that the trim punch is movable along the angled guide surface between a first, extended position and a second, retracted position.
A method of cutting sheet metals comprising:
- providing a die block having a die block cutting edge;
- providing a trim punch with a punch edge movable with respect to the die block;
- arranging a sheet metal on the die block, such that a part of the sheet metal protrudes over the die cutting edge;
- moving the trim punch into contact with the protruding part of the sheet metal and past the die block cutting edge so as to create a shearing force on the sheet metal and, at the same time, moving the trim punch such that a clearance between the punch edge, the die block cutting edge and the workpiece increases as the trim punch moves past the block cutting edge.
1 more element
Dependencies are inferred from the claim text.