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肘杆式挤压机是冷挤压机中的一种类型，其加工精度的高低以及设备和模具的使用寿命与冲头的工作速度的平稳性密切相关．在对机构进行了运动分析的基础上，采用优化设计的方法，以提高冲头工作速度的平稳性．并对拉力肘杆挤压机的机构进行了优化．
Elbow bar extruder is a type of cold extrusion machine, the level of its precision and equipment and mold life is closely related to the stability of the working speed of the punch. Based on the analysis of the mechanism, the optimization design method was adopted to improve the stability of the working speed of punch. The mechanism of the pull-toggle joint extruder was optimized.