33results about How to "Reduce lateral friction" patented technology

This utility model provides a punching die, including: an upper die assembly and a lower die assembly, which are mounted on a stamping machine; the lower die assembly has a placement position on which a metal part is placed; a plurality of cutting elements are inserted into the upper die assembly; in use, the metal part on the placement position is punched; and an extension plate is provided on the cutting elements; the lower die assembly has a plurality of sliding grooves, which are adjacent to the placement position and opposite to the plurality of cutting elements; the punching die proposed by this utility model does not produce burrs when punching the metal part through the cutting elements, and at the same time reduces the lateral friction between the metal part and the cutting elements, thereby eliminating the need for frequent machine stops for grinding of the cutting elements and further improving production efficiency.