多参量在线反馈的大型筒体-端框精确对装方法

针对几何尺寸大、结构刚度小、误差终端累积效应显著等制造特征引起的大型筒体-端框对接装配问题，提出一种基于过程参量在线反馈的精确对装新方法，设计筒体和端框的圆跳动、对装缝隙等多参量同步在线测量方案，研制多传感组合测量装置，并将其集成于对装系统，从而优化对装工艺，提高对装效率和精度稳定性。经检测，采用所提出的方法，大尺寸复合材料筒体与铝合金端框对装缝隙误差可有效控制在0.15mm范围内，满足对装精度要求，验证了所研制的多参量在线测量系统对提高对装精度的有效性。

Precise Butt Assembly Method of Large Cylinder and End Frame Based on Multi Parameter Online Feedback

To improve butt assembly accuracy and efficiency of large cylinder and end-frame under consideration of large size, low stiffness and significant error terminal cumulative effect, a novel precise butt assembly method based on process parameter online feedback is presented. A multi-parameter synchronous online measurement scheme including circular run-out and butt assembly gap of cylinder and end-frame is designed. Moreover, a multi-sensor measurement device integrated to the butt assembly system is designed. Further, the butt assembly process is optimized. According to the test results, the butt assembly gap error of large composite material cylinder and aluminum alloy end-frame is controlled in the range of 0.15mm effectively, thus satisfying the butt assembly accuracy requirements. Therefore, the validity of the multi-parameter online measurement system developed to improve butt assembly accuracy has been verified.