METHOD OF PROFILING SHAPED CONTOUR OF PLANE WORKPIECE FOR WRENCH PUNCHING Russian patent published in 2024 - IPC B21K5/16 

FIELD: sheet stamping.

SUBSTANCE: invention can be used for profiling a flat piece workpiece when making a wrench forging. Shaped contour of flat piece workpiece is profiled, said workpiece having two sections in the form of bulges for head of wrench with open jaw formed by curvilinear contours of different geometry. Bulges are connected by a middle straight section. There is a branch in the form of a straight section to perform the function of a castor during manipulation of the workpiece in the process of hot die forging of a wrench. Contour of one of the bulges is formed by arcs of circles of the same radius, which are conjugated with formation of convex and concave parts of the contour. Contour of the second bulge is formed by arcs of circles of the same radius, which differs from the radius of the circular arcs of the other bulge, and the lower rectilinear section crossing them.

EFFECT: as a result, it is possible to profile a flat piece workpiece having a complex contour.

1 cl, 1 dwg, 1 ex