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The forging is a kind of plastic working , it is the use of the plasticity of the material , with the action of external forces undergo plastic deformation , to obtain the desired shape, dimensions and certain organizational performance forging molding process is very complex . Unreasonable process design in the forging process , often resulting in some defects , such as wrinkling , filling dissatisfaction , partial rupture . The traditional process analysis and mold design , mainly rely on engineering analogy and design experience , mold after repeated tryout repair , and adjusting the process parameters , the elimination of these defects in the forming process . The forging process numerical simulation technology in recent years has become prevent defects , process optimization as a powerful tool to improve the quality of forging products . In this paper, the spline forming process , summarizes the characteristics of the various processing methods , machining accuracy and scope of application . On this basis , combined with a micro cars Axle splined cold extrusion molding process , Axle rod portion in the extrusion stability , calculated boot length , blank diameter and extrusion pressure in the extrusion important process parameters to explore the impact of the the extrusion segment length and the die into the mold angle of the forming process , to guide the process parameters of length , squeeze the length of the rough size and die into the mold angle with DEFORM3D analog optimization . By calculation , analysis , design and computer simulation of extrusion die . End-use the software on the spline cold DEFORM3D extrusion process simulation and analysis of stress , equivalent strain and the distribution of the velocity field , to grasp the changes in the law , and provide guidance to the actual production of the miniature car Axle spline .
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