Connecting structure and connecting method of automobile parts

Abstract

The automobile part connecting structure includes a first cylindrical connecting piece and a second cylindrical connecting piece. The first cylindrical connecting piece has an inner wall, the second cylindrical connecting piece is arranged in the first cylindrical connecting piece and has an outer wall, and the outer wall of the second cylindrical connecting piece interferes with the inner wall of the first cylindrical connecting piece Cooperate. The invention also relates to a connecting method of automobile parts, which assembles the cooled second cylindrical connecting piece into the heated first cylindrical connecting piece, so as to realize the connection between the outer wall of the second cylindrical connecting piece and the first cylindrical connecting piece The interference fit of the inner wall of the part. The automobile part connection structure is simple and stable, and the steps of the automobile part connection method are simple and easy to operate, which is beneficial to effectively shortening the product production cycle and reducing the production cost.

Description

Technical field [0001] The invention relates to the technical field of automobile manufacturing, and in particular to an automobile part connection structure and a connection method thereof. Background technique [0002] The mixed structure of multiple materials has become the development trend of lightweight automobile body, such as steel / aluminum structure, steel / composite material structure, aluminum / carbon fiber composite material structure, etc. are all common mixed material structures of automobile body. In order to realize the connection between parts of different materials, conventional spot welding, arc welding, riveting, bolt connection, gluing, friction stir welding, snap, micro snap structure and their mixed connection methods are all optional processes. However, when the above-mentioned conventional process is used to connect parts of different materials, the greater the performance difference of the connected materials, the more complicated the connection proce...

AI Technical Summary

Problems solved by technology

However, when the above-mentioned conventional process is used to connect parts of different materials, the greater the performance difference of the connected materials, the more complicated the connection process, the higher the corresponding processing and manufacturing costs, and even lead to the performance of the connected materials. decline

Take the connection between aluminum pipes and steel pipes (such as the connection between aluminum alloy crash boxes and steel front longitudinal beams of automobiles) as an example, although bolted connections, riveting, bonding or special laser tailor welding technologies are currently available Connection process, but bolt connection will increase the number and weight of parts, the connection strength of riveting and bonding is difficult to guarantee, special laser tailor welding has higher requirements on process parameters and higher welding cost

Images