Self-piercing adhesive riveting connection device and adhesive riveting method

Abstract

A self-piercing adhesive riveting connection device, comprising: a composite die, on which an annular groove is arranged; a composite blank holder, which is vertically opposite to the composite die, and the composite blank holder can move in the vertical direction , used to press the parts to be riveted; the number of heat-conducting electrodes is multiple, which are respectively arranged at the bottom of the composite blank holder and the upper part of the composite die; the heat-conducting electrodes can independently heat different parts to be riveted; punches, which are solid The ring-shaped structural part is arranged inside the center hole of the composite blank holder and can slide up and down axially along the center hole; the ductility of the ultra-high-strength steel near the riveting point is greatly improved, and the difficulty of deformation of the ultra-high-strength steel is solved. The problem that effective joints cannot be formed and a self-piercing adhesive riveting connection method is provided. By precisely controlling the punching speed of the punch, the requirements for the strength of the rivet, the punching ability of the equipment, and the rigidity of the C-frame of the riveting gun are reduced, and the production is reduced. cost.

Description

technical field [0001] The invention relates to the technical field of high-strength steel riveting, in particular to a self-piercing adhesive riveting connection device and a method for realizing punching adhesive riveting. Background technique [0002] The development of the automobile industry has brought enormous pressure on energy, climate, and the environment. Reducing fuel consumption, energy conservation and emission reduction has become an urgent problem for Chinese automobiles, and automobile lightweight has become an important means to solve this problem. [0003] Lightweight materials such as high-strength steel plates, aluminum alloys, and magnesium alloys have replaced traditional steel plates and become the main method for achieving lightweight automobiles, while the application of new materials poses a huge challenge to automotive connection technology. When traditional resistance spot welding is used to connect high-strength steel and aluminum alloy, due to ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of this invention is to design and develop a self-piercing sticky riveting connection device based on the semi-hollow self-piercing riveting connection technology. By introducing the tempering and annealing characteristics of metal materials, local tempering heat treatment is performed on ultra-high-strength steel, and the riveting is properly reduced. The strength of the ultra-high-strength steel near the riveting point greatly improves the ductility of the ultra-high-strength steel near the riveting point, and solves the problem that the ultra-high-strength steel is difficult to deform and cannot form an effective joint

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