钟形罩是汽车驱动轴传递扭矩动力的关键零件之一。通过对钟形罩锻造成形过程金属流动规律的分析,改进了原有的锻造工艺及模具结构。解决了锻件内外杯形面同轴度超差问题,提高了锻件尺寸精度,对类似锻件的工艺及模具设计有借鉴作用。 Bell covers are one of the key components that power the drive shaft of a car to transmit torque. Through the bell shape forging process metal flow analysis, improved the original forging process and mold structure. Which solves the problem of over-tolerance of the concentricity of the inner and the outer cup surfaces of the forging and improves the dimensional accuracy of the forgings, and can be used as a reference for the process and mold design of similar forgings.