关键词: 早期故障；汽车传动轴；万向节十字轴总成装配；装配工装；改进方案

Abstract: In order to ensure that the universal cross shaft assembly can achieve the state specified in the transmission shaft assembly design when working, when the universal cross shaft assembly in the transmission shaft assembly, we must avoid the assembly quality problems such as needle tilt, bearing pressure, cross shaft, needle surface scratch, oil seal extrusion deformation, and reduce the early failure of the universal joint assembly in the working state. The paper first expounds the common failure mode of universal axial cross shaft assembly, then analyzes the influence of the old and new equipment process on the universal axial cross shaft assembly, finally discusses the universal axial cross shaft assembly in the transmission shaft assembly, the comparative analysis of failure data before and after improvement proved the effectiveness of the new design process tooling.

Key words: Early failure; Automobile propeller shaft; Assembly of universal joint cross assembly; Assembly scheme; Improvement scheme