关键词: 汽车制造；扭矩；角度监控；扭矩监控

Abstract: Torque is an important technological parameter in the process of automobile development and manufacturing, which has a great influence on the quality. During the tightening process of threaded fasteners, not only the final torque should be controlled, but also the torque and angle in the process should be monitored. Avoid the occurrence of qualified final torque, actually internal abnormalities, such as stuck, screw loose and other hidden dangers. By monitoring the torque and angle of the tightening process, the abnormal problems in the tightening process can be better found and the screw thread fastening quality can be further improved. The tightening result data was statistically analyzed, the tightening point of torque control method was statistically analyzed, and the monitoring range was set. Torque and angle control method is used to analyze torque statistics and set the monitoring range. Check and analyze the out-of-tolerance samples to find out the problem points and solve them, so as to improve the quality of thread connection.

Key words: Automobile manufacturing; Torque; Angle monitoring; Torque monitoring