High-precision punching die for inclined seam silicon steel sheet

The high-precision punching die comprises a lower die block, an upper die block and an auxiliary positioning mechanism, and materials are arranged between the lower die block and the upper die block. The upper die block comprises a punching part fixedly arranged on an upper die plate, the punching part is provided with a punching face in the feeding direction, the punching face is formed by splicing symmetrical side diagonal planes at an included angle, and the punching part and the female die part of the lower die block are correspondingly arranged in an embedded mode. The upper die block further comprises a pressing part elastically connected to the upper die plate, and a pressing block of the pressing part is attached to the punching face in a sliding mode. The material penetrates through the auxiliary positioning mechanism and then is right opposite to the punching face. The right-angle punching surfaces are symmetrically arranged on the two sides of the punching part, so that right-angle trimming is comp