活塞销冷挤压成形工艺研究
Study of Cold Extrusion Forming Process for Piston Pin
王德俊， 姚志英， 李艳红， 刘 洁
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作者单位：鹤壁职业技术学院 机电工程学院，河南 鹤壁 458030
中文关键字：活塞销；冷挤压；凸模；热处理
英文关键字：piston pin；cold extrusion；punch；heat treatment
中文摘要：通过对活塞销结构工艺性分析，制定了活塞销的冷挤压工艺方案并设计了挤压件图，确定了组合凹模直径及径向过盈量与轴向压合量等工艺尺寸；设计了便于调整及更换的组合凸模，保证了挤压件的同心度；根据凸模工作特点采取合适的热处理工艺，提高了模具的使用寿命。
英文摘要：On the basis of the analysis of piston pin structure, the cold extrusion process plan and extrusion map were designed, the die diameter and the combined sizes were determined; the combined punch die which facilitates adjustment and replacement was designed to ensure the extrusion concentricity. According to the working characteristics of the punch die, taking the appropriate heat treatment process, the use life of the die can be lengthened.