通过对吊钩叉零件难加工部位叉形内挡三种不同制造加工工艺方法的描述和对其三种不同制造工艺方法在生产制造经济性的分析与讨论,阐述如何在保证零件顺利加工制造的同时其制造经济性最优、生产成本最低。对其他特形、异性等难加工件的生产制造具有积极的意义和一定的参考价值。 Through the description of three different manufacturing process methods for fork parts of fork hook parts and the analysis and discussion on the manufacturing economy of the three different manufacturing process methods, it is elaborated how to ensure the smooth manufacture of parts At the same time its manufacturing economy, the lowest cost of production. It is of positive significance and certain reference value for the manufacturing of the other special shaped and the opposite-shaped hard-to-be-worked parts.