High-speed nail shooting connecting device and connecting method

Abstract

The invention relates to a high-speed nail shooting connecting device and a connecting method. The high-speed nail shooting connecting device comprises a shell and a barrel body arranged in the shell;the barrel body is vertically disposed; the upper end of the barrel body is connected with the inner top of the shell; a coil, a driving sheet and a puncher pin are arranged in the barrel body in sequence from top to bottom; the lower end of the coil is closely fitted to the driving sheet; the puncher pin comprises a punch rod; the upper end of the punch rod is provided with a circular table coaxial with the punch rod; the circular table presses against the driving sheet; the lower end of the punch rod passes through the middle part of the lower end of the barrel body; a magnetic medium is arranged on the lower end face of the punch rod; a punch hole for enabling the lower end of the punch rod to pass through is formed in the lower part of the shell; a spring is arranged on the punch rodin a sleeving manner; the upper end of the spring presses against the circular table; and the lower end of the spring presses against the barrel body. By adoption of an electromagnetic force driving mode, the device is short in forming time; a connecting force and connecting energy can be precisely controlled through single-parameter adjustment, and realizes self-piercing riveting under differentconditions; the process is simple; and automatic production is easy to implement.

Description

technical field [0001] The invention relates to a high-speed nail-shooting connection device and a connection method, and relates to the technical field of automobile mechanical connection. Background technique [0002] With the rapid development of the automobile industry and the emphasis on energy consumption and exhaust emissions of automobiles all over the world, automobile lightweight has become the future development trend. The proportion of the body-in-white to the total weight of the vehicle has greatly increased. Therefore, the application of various new lightweight materials, such as high-strength steel, aluminum alloy, and fiber composite materials, has become an important means of lightweighting the body. Traditional connection methods such as resistance spot welding and MIG welding are difficult to guarantee the connection quality of light metals or dissimilar metals. As a kind of car body connection technology, high-speed nail riveting has the characteristics ...

AI Technical Summary

Problems solved by technology

[0003] Although the existing high-speed nail riveting equipment can complete high-speed nail riveting under different conditions, the power source of the equipment is still mainly the traditional air pressure, so the room for improving the performance of the riveted joint after the rivet is formed is limited, and the forming process has certain limitations. limitation

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