Auxiliary welding tool fixture of T-shaped connector laser welding robot for aluminum alloy sheets

Abstract

The invention discloses an auxiliary welding tool fixture of a T-shaped connector laser welding robot for aluminum alloy sheets. The fixture includes a framework, one end of the framework is providedwith an end plate, the other end of the framework is provided with an idler wheel type clamp, the end plate includes a switching mechanism of a first connector and a second connector, and the first connector is provided with a base, a shaft shoulder in which two grooves are distributed radially and evenly, and a connection shaft of a clamping groove; the second connector is provided with a connection plate and a connection sleeve in which two convex blocks and top screw holes are radially and evenly distributed, the connection sleeve cooperates with the connection shaft, the convex blocks cooperate with the grooves, and the top screw holes cooperate with the clamping groove; the idler wheel type clamp includes a clockwise rolling device and two wing-shaped brackets at the two sides, the clockwise rolling device includes a standard unidirectional air cylinder with double guiding rails, a wedge-shaped support with an opening facing downwards and rolling wheels, each wing-shaped support is provided with a bidirectional tightening air cylinder with a standard opening and lateral rolling clamps of two supporting plates, and the bottom of each supporting plate is provided with a pair ofrolling wheels. By adopting the auxiliary welding tool fixture of the T-shaped connector laser welding robot for the aluminum alloy sheets, the accurate control over the size and position of T-shapedconnectors and the rigid fixation of the T-shaped connectors can be achieved, and it is ensured that stringers are prevented from getting misaligned and limiting the welding deformation amount.

Description

technical field [0001] The invention belongs to the field of robot laser welding thin plate structures, in particular to a special welding fixture for robot double-beam laser welding aluminum alloy thin plate T-shaped joints. Background technique [0002] At present, the T-joints of traditional aircraft fuselage panels are usually manufactured by riveting technology. The riveting process is widely used in the field of aeronautical structures and has many advantages, such as high process stability and mature connection process. However, due to the use of a large number of rivets, riveting The structure has the characteristics of heavy structural weight and low production efficiency. At the same time, riveting requires prefabricated foundation holes on the stringers, which leads to poor structural integrity and reduced rigidity of the wall panels. In view of the limitations of the current riveting process, a dual-beam laser welding process has been developed abroad to replace ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of inaccurate auxiliary positioning and poor stability of welding parts in the process of double-beam laser welding, the invention develops a new type of follow-up tightening and fixing welding fixture, whose main function is to keep the stringers from shifting during the welding process and limit the welding process The welding deformation in the center can realize the precise control and rigid fixation of the geometric shape and size position of the T-shaped welding joint, and ensure the stability of the fillet weld welding process

In order to effectively solve the problems of low occupancy accuracy of stringers, unstable gap between skin and stringers, and low manufacturing efficiency in the laser manufacturing process of aircraft fuselage panels, the auxiliary tooling fixture of the present invention is based on the dual Based on the research on the beam laser welding process, it is proposed that with the double-beam laser welding process, the stringer tightening and positioning can be dynamically realized, and the relative position of the stringer and the skin can be flexibly installed and tightened to quickly form a T-shaped welding joint. Effectively control the gap between the skin and the stringers, improve the accuracy of the stringers, and improve the automation of panel manufacturing

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