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围绕常规正挤压与缩径挤压原理相同但特点各异进行两种挤压工艺及模具的详细比较,给出了两种挤压的变形规律及常规正挤压工件前端出现“外凸”和缩径挤压工件前端出现“内凹”的形成机理;提出采用经验与理论相结合的两种挤压工艺的设计方法;以变速器输入轴为实例,进行多工步缩径挤压工艺试验,验证了理论研究结果的可行性,为两种挤压工艺的推广及应用提供了参考。
Around the normal extrusion and shrinkage of the same principle of extrusion but different characteristics of the two extrusion process and a detailed comparison of the mold is given two kinds of extrusion deformation laws and conventional positive extrusion front “ ”And reducing the diameter of the front end of the workpiece “ concave ”formation mechanism; the combination of experience and theory proposed two kinds of extrusion process design method; the input shaft of the transmission as an example, Extrusion process test to verify the feasibility of theoretical research results for the promotion and application of two kinds of extrusion process provides a reference.