Study Of Body In White Flow Drill Screwdriving Process And Joint Mechanical Properties

As one of the main joining methods of automobile body in white,Flow Drill Screwdriving has been got attention of the auto manufacturers since it entered China.The objects joined by the Flow Drill Screwdriving are generally aluminum alloy plates,There is no systematic literature on this process.This paper mainly uses the method of mechanical experiment to explore the mechanical properties of Flow Drill Screwdriving and its join point.In this paper,the theoretical research and elaboration of Flow Drill Screwdriving are carried out.The classification and forming mechanism of Flow Drill Screwdriving are introduced.After the analysis and classification of the failure modes of the joints,the indexes of the joint quality are put forward,and the parameters affecting the quality of the joints are preliminarily expounded.Secondly,the basic equations and heat conduction problems of metal plastic forming are described,and the equation of acceptance in the process of friction heating and thread forming is derived.The mechanical properties of Flow Drill Screwdriving joint were analyzed.Through the response surface method for the behind the best drive equipment process parameters combination,comparison and analysis the plate materials effect of the joint mechanical properties and upper plate hole effect on joint mechanical properties.In the end,the angle problems of screw and plate in the process of Flow Drill Screwdriving are investigated.This paper introduces the Flow Drill Screwdriving system of the production site,and finds out the problem from the robot calibration in the field,and studies the influence of the Angle of deviation on the mechanical properties of the joints.