Pre-diverging-wedge pressing precision forming die and disc forming method

Abstract

The invention provides an extruding terrace die which is formed by assembling a pre-diverging die, a wedge pressing die and a terrace die core shaft. Firstly, the pre-diverging die is used for realizing the pre-distribution of metal plastic flow volumes, reducing the remain of forged pieces and increasing the utilization rate of materials; the wedge pressing die compels a metal to plastically flow under the action of the wedge pressing force, and as the plastic flow process of the metal is added, the influence on the mechanical properties of the formed part caused by machining is avoided and the purpose of improving the mechanical properties of the formed part is achieved; the terrace die core shaft and a concave die are combined to form a closed cavity so as to restrain the further radial flow of the deformed metal, as a result, the contact area between the terrace die and the deformed metal is reduced and the extruding forming force is reduced.

Description

technical field [0001] The invention relates to the field of mechanical processing and manufacturing, in particular to a pre-splitting-wedge pressure precision forming mold and a disc forming method. Background technique [0002] The extrusion forming process has the function of shape modification and modification, and is one of the important forming processes in the manufacture of metal structural parts. The structure of the extrusion punch directly determines the size of the extrusion forming force and forming energy consumption, the forming quality and mechanical properties of extrusion parts, the machining allowance of extrusion parts and the processing and forming efficiency. Therefore, labor-saving and efficient forming dies have always been the technical field A goal pursued by researchers and designers. [0003] figure 1 and figure 2 Shown is a schematic diagram of the structure of the disk. In the prior art, the solid bar is formed in three passes of upsetting,...

AI Technical Summary

Problems solved by technology

When the flat-bottomed punch is used for upsetting extrusion, the contact area between the punch and the round cake blank is large, the forming force is large, the tonnage of the equipment is high, and the energy consumption is large; the machining allowance of the disc parts formed by upsetting extrusion is large, and the machining cycle Long, low material utilization rate, high manufacturing cost, and mechanical processing damages the upsetting and extruding metal streamline, which affects the mechanical properties of the part

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