The welding device and process of the front window frame of the driver's cab and the welding process of the frame of the driver's cab

Abstract

The invention relates to a driver's cab front window frame welding device and process and a driver's cab frame welding process, including a welding platform on which the front window frame is placed, and several rigid restraint devices are arranged on the welding platform. The constraint device compresses and positions the front window frame, and sets the amount of anti-deformation for each constraint position of the front window frame through the rigid constraint device. The invention adopts a modular design concept and adjusts the amount of anti-deformation at different positions of the front window frame in a targeted manner before welding, so as to effectively control welding deformation, improve welding precision, and ensure the quality of finished products after welding. Improve work efficiency and save production cost.

Description

technical field [0001] The invention relates to a welding process for a frame of a cab front window of a rail vehicle, in particular to a welding process and a device for a frame of a cab front window and a welding process for the frame of the cab, belonging to the technical field of rail vehicle body manufacturing. Background technique [0002] The aluminum alloy body of the high-speed EMU is mainly composed of the bottom frame, side wall, end wall, roof and driver's cab to form an integral welded structure. Among them, the driver's cab is not only an important factor to increase the speed of the high-speed EMU, but also a perfect embodiment of the speed and beauty of the EMU. Therefore, the manufacturing quality of the front window frame of the driver's cab is very important. [0003] like figure 1 As shown in the figure, the front window frame 1 of the driver's cab is a three-dimensional irregular structure, which adopts a nearly Z-shaped section profile, and the profile...

AI Technical Summary

Problems solved by technology

[0005] The existing welding process is difficult to form, and the welding deformation after forming is not easy to control. The outline of the front window frame 1 is seriously deformed after welding, which affects the installation of the front window glass and the overall shape of the driver's cab. The details are as follows:

[0006] (1) The front window frame 1 of the driver's cab is tailor-welded from multiple profiles, the welding heat input is large, and the front window frame 1 itself deforms greatly after welding

[0007] (2) The driver's cab frame 2 and the front window frame 1 are assembled and welded at the same time. The driver's cab frame 2 is assembled by inserting and assembling plates and profiles. There are many joints, and the welding heat input is large. The welding shrinkage of the driver's cab frame 2 ( Tensile stress) leads to welding deformation of the front window frame 1 connected to it

[0008] (3) The front window frame 1 is a three-dimensional curved surface structure, and the welding process lacks effective rigid restraint measures. After the welding of the front window frame 1, the contour changes irregularly and the deformation is large

[0009] (4) The connection position of each module of the front window frame 1 is circumferential welding. After the front window frame 1 and the driver's cab frame 2 are assembled, the connection welds of the modules inside the car body can only be welded in the overhead welding position. The welding space is limited and the construction is inconvenient. , welding quality is difficult to guarantee

[0010] (5) The amount of repairs after welding deformation of the front window frame 1 is relatively large, and the rules are not uniform, which seriously affects the quality and production efficiency

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