The annual output of generator shaft support frame of a certain enterprise is up to 40 thousand parts per year.The space position precision demand of the parts is higher,but the machining efficiency is low,and the products quality is not stable.In order to improve the situation,the process of the parts was optimized and a fixture was designed to complete all processes,so as to improve the production efficiency and product quality.The practice proves using the optimized processing technology,product accuracy has reached the requirements of the drawings,and the processing efficiency has been greatly improved.It provides reference for similar products processing.