我厂生产的活塞销系一圆筒状零件,在160吨金属冷挤压机上冷挤成型.以前,上、下料由二人操作,劳动强度大且不安全. 一九七三年下半年,我厂广大革命职工在无产阶级文化大革命及批林批孔运动推动下,大搞技术革新和技术改造运动,在不变动挤压机原结构的前提下,根据人工上、下料的动作 The piston pin produced by our factory is a cylindrical part, which is cold-extruded on a 160-ton metal cold extrusion machine. Previously, the upper and lower materials were operated by two people and the labor intensity was high and unsafe. In the second half of 1973 , The vast majority of our revolutionary workers in the proletarian cultural revolution and approved by the pro-Lin hole movement, vigorously promote technological innovation and technological transformation exercise, without changing the original structure of the extruder under the premise, according to manual, unloading the action