一体后从板座是货车中梁上的一个铸钢零件,它用2G25号钢铸造,重37.7公斤,其外形和加工面如图1所示。一体后从板座在普通机床上加工时,需经过划线、加工两侧面、端部小平面和钻孔等工序。产品的质量、生产效率和工人的劳动强度都不能和日益发展的生产相适应。我厂转向架 One after the plate from the truck is a cast steel truck parts, it is cast with 2G25 steel, weighing 37.7 kg, its shape and processing surface shown in Figure 1. One after the plate from the ordinary machine processing, to go through scribing, processing both sides, the end facet and drilling and other processes. Neither the quality of products nor the efficiency of production nor the labor intensity of workers can be adapted to the ever-evolving production. I plant bogies