关键词: 多轴 EC 拧紧机；螺纹失效；拧紧参数优化

Abstract: Thread connection is a common way of connecting parts in the process of automobile assembling and adjusting. With the gradual improvement of enterprise intelligent automation level, automatic tightening machine has been widely used in the production line, at the same time the tightening quality of tightening machine has become the key to product quality assurance. This paper optimizes the process parameters of the multi-axis electric servo control (EC) tightening machine through the process investigation, process analysis, rectification and verification of the screw thread failure mode in the tightening process, the consistency of the tightening quality and the tightening result is ensured.

Key words: Multi-axis EC tightening machine; Thread failure; Tightening parameters optimization