关键词: 量产阶段；转向管柱；原因分析；改善措施

Abstract: During the mass production stage of vehicle model, the imported steering column component experienced faults such as lack of power steering, abnormal steering noise, and jamming. The three issues have a relatively high priority level. Lack of assistance in steering involves driving safety, and the abnormal noise and jamming during steering affect the driver's experience, all of which need to be improved. This article analyzes the causes of steering column problems and formulates improvement measures through the use of A-B-A exchange method, 5Why factor analysis, and control experiments in quality improvement methods. This case provides a reference for automotive original equipment manufacturers and automotive component suppliers, and provides a solution for similar issues.

Key words: Mass production stage; Steering column; Cause analysis; Improvement measures