QC方法在提高箭载仪器支架装配合格率上的应用研究

Research on the Application of QC Methods in Improving the Assembly Pass Rate of Rocket-Borne Instrument Brackets

托板自锁螺母的高效合理安装对提高箭载仪器支架的装配质量和效率起决定性作用。针对当前箭载仪器支架托板螺母一次装配合格率低的问题,本文采用QC质量工具对其装配过程开展质量控制。基于分层筛选法发掘关键故障现象,从人、机、料、法、环五个方面深入分析,找到产生关键故障的两个要因;遵循5W1H的原则制定对策,通过试验改进定位工具、优化防护方法等,使支架铆接托板螺母一次合格率提高到99%,为后续类似结构铆接提供了借鉴依据和参考经验。

The efficient and reasonable installation of the self-locking nut of the support plate plays a decisive role in improving the assembly quality and efficiency of the rocket-borne instrument bracket. In this paper, in order to solve the current problem of low pass rate of one-time assembly of the rocket-borne instrument bracket support plate nut, QC quality tools are used to carry out quality control on the assembly process. Based on the hierarchical screening method, key fault phenomena were discovered, and the two main causes of key faults were found through in-depth analysis from the five aspects of human, machine, material, method, and environment. Countermeasures were formulated following the 5W1H principle, and through experiments, positioning tools were improved and protection methods were optimized, the one-time pass rate of bracket riveting support plate nuts was increased to 99%, providing a reference basis and reference experience for subsequent riveting of similar structures.