大长宽比薄壁滤波器腔体加工工艺方案优化

Optimization of process plan for the filter cavity with large aspect ratio and thin wall

某航天项目中的滤波器腔体具有长宽比大、壁薄的结构特点,以及尺寸公差、形位公差精度要求高的工艺特点,加工难度大.介绍了一种大长宽比航天薄壁腔体的结构和工艺特点,分析了腔体截面结构对零件尺寸公差和形位公差精度的影响,改进了加工工艺方案.最后运用此工艺方案进行加工试验,结果满足要求.

The filter cavity in some space projects is with large aspect ratio,thin wall of the structure and high tolerance of form and position.It is difficult to be machined.The structure and process of a filter cavity,which is of a space project with large aspect ratio and thin wall,are introduced.The influence about tolerance of form and position is analyzed from cavity cross-section.On the basis of it improves process plan of the part.At last,the plan is applied and the result showed that it meets demand.