高精度碳纤维复合材料副反射面天线制备工艺

文摘分析了模具选材、装配工艺过程及机加工工艺对高精度CFC副反射面天线制备的影响,研究了高精度CFC副反射面制备工艺的关键技术,进行了模具材料比较、装配工艺优化及机加工验证试验。结果表明,殷钢是制备高精度CFC副反射面天线的较理想模具材料;在夹层结构装配时采用外蒙皮原位装配技术并单独适配过渡区的蜂窝可有效避免天线型面精度超差;机加工辅助工装与三维摄影测量系统相结合的措施可有效确保装配基准点的高形位精度并大幅缩短天线加工周期。

Preparationof High Precision Carbon Fiber Composite (CFC) Secondary Reflector Antenna

The effects of selection of mold materials, processing of assembly and machining on the manufacturing of high precision CFC-made secondary reflector antenna were analyzed through researching the key assembly techniques, compared mold material, optimized assembly process and machining verification experiment.The results show that invar is an ideal mold material for the manufacturing of high precision CFC-made secondary reflector antenna. When the sandwich structure is assembled, adopting the in situ assembly technique for the external covering and individual adoption of the cellular around transitional region of the antenna covering can effectively avoid the poor surface accuracy of the antenna. A comprehensive application of an auxiliary mould for the machining and the 3D image measurement system can effectively ensure the high positional accuracy of the assembly reference point and significantly shorten the manufacturing period of the antenna.