弧面凸轮二维等温挤压数值模拟与参数优化

弧面凸轮分度机构制造的关键是弧面凸轮的加工，其传统的加工方法是采用棒料切削加工，材料利用率低，生产效率低，产品成本高，难以满足社会生产的需求.弧面凸轮等温挤压成形是以净成形(Net-Shape)和近净成形(Near-Net-Shape)为目标的加工技术，用MSC.Marc软件对弧面凸轮等温挤压成形过程进行了二维模拟，分析了不同凹模型腔楔角α对坯料填充性能的影响，为实现弧面凸轮等温挤压成形和优化模具结构提供了重要依据.

Numerical Simulation and Optimization of Two-Dimensional Isothermal Extrusion for Globoidal Cams

Shaping globoidal cam is the key in manufacturing of the globoidal cam indexing device.The traditional method is bar machining,which can hardly meet the producing need for its low rate of material exploitation,low productivity and high cost.Isothermal extrusion of globoidal cam is a kind of technique aiming at Net-Shape and Near-Net-Shape.In this paper,MSC.Marc software is used to simulate numerically the globoidal cam isothermal extrusion.The influences of different model cavity concave wedge angle a on the performance of fulling billets are analyzed.The research provides an important basis for the realization of globoidal cam isothermal extrusion and model structure optimization.