复合材料舱体零件数控定位技术

Technology of NC Positioning for Parts in Composite Case

文摘复合材料壳体采用手工划线定位零件的装配方式,精度低、重复性差,对工人的操作水平要求较高,而且利用金属划针会造成复合材料壳体表面损伤,为改变手工划线定位现状,提出利用数控设备结合喷涂设备完成零件位置线标记,为保证零件位置轮廓准确性,开展等距喷涂技术研究,构建数控定位轨迹方程,通过数控系统硬件连接组建零件定位系统,通过数控设备结合喷码装置实现复合材料壳体表面零件轮廓位置的喷涂标记,零件定位精度可以满足±0.1 mm的要求,实现了数控定位代替手工操作方式,提升了复合材料壳体零件定位精度和一致性。

The assembly mode of composite case is hand crossed positioning method. It＇s low precision,poor repeatability,high level requirements for the operators and using the metal marking needle can cause surface damage of the composite shell. In order to change the status of hand crossed positioning,the method of NC equipment combined with the spraying equipment for the parts positioning was proposed. For making sure the accuracy of parts contour and position,equidistant spraying was researched. NC positioning trajectory equating was built. Through connecting spraying equipment with CNC system to build up NC positioning system for parts. The contour and position of parts on composite case was marked. The positioning accuracy of parts can reach ±0.1 mm,NC positioning replacing handicraft method was realized. The technology improves the positioning accuracy and consistency of parts in composite case.