针对阀门壳体零件生产准备时间消耗严重、加工过程中装夹定位困难以及多次装夹易造成误差传递和累计的问题。通过对某阀门壳体工件加工工艺分析,设计了一种航天阀门壳体工件加工专用夹具,包括连接板、分度盘、垫板、螺栓、定位销等部件。改善了阀门壳体工件的加工工艺性,提高了加工精度与效率。 For valve shell parts production preparation time consuming, clamping difficulties in the process of positioning and multiple clamping easily lead to error transfer and accumulation problems. Through analyzing the machining process of a valve shell workpiece, a special fixture for the machining of the aerospace valve shell workpiece is designed, including the connecting plate, the index plate, the plate, the bolt, the positioning pin and other components. Improve the valve shell workpiece processing technology and improve the processing accuracy and efficiency.