Front and rear longitudinal beam welding device for automobile and welding method thereof

Abstract

The invention relates to a front and rear longitudinal beam welding device for an automobile and a welding method thereof. The front and rear longitudinal beam welding device includes a solder sheet positioning device and a weld seam control device. The solder sheet positioning device comprises a positioning platform, a first placement groove and a second placement groove, and the weld seam control device is disposed on the positioning platform; a first solder sheet is placed in the first placement groove, and the second solder sheet is placed in the second placement groove; the left side of the first solder sheet is provided with a first positioning rod for abutting against the first solder sheet, and the right side of the second solder sheet is provided with a second positioning rod forabutting against the second solder sheet. The weld seam control device comprises a plurality of pressure wheels located at the center of the end of a workpiece to be welded, a plurality of motors connected with the pressure wheels are arranged on both sides of the workpiece to be welded, and a sensor is arranged at the weld joint of the workpiece to be welded. The front and rear longitudinal beamwelding device has the advantages that two material sheets to be welded are reinforced and positioned from the left side and the right side respectively, thereby reducing the welding burden over workers and ensuring the smooth progress of the laser welding.

Description

technical field [0001] The invention relates to the technical field of welding front and rear longitudinal beams of automobiles, in particular to a tailor welding device and a tailor welding method for front and rear longitudinal beams of automobiles. Background technique [0002] The front and rear longitudinal beams of the automobile are the beams arranged along the axial direction of the bridge and supported on the beams in the upper structure of the automobile. They have the function of supporting objects on the beams, and are generally low-carbon alloy structural steel. In terms of car structure and safety, the front and rear longitudinal beams of the car play an important role, which are arranged longitudinally along the body, usually left and right symmetrically. The front and rear longitudinal beams need to meet the stringent strength requirements for frontal and side collisions, and at the same time, they must also serve as important components of the car body, conn...

AI Technical Summary

Problems solved by technology

The front and rear longitudinal beams need to meet the stringent strength requirements for frontal and side collisions, and at the same time, they must also serve as important components of the car body, connecting components related to their layout, and as the most critical structural parts for vehicle offset collisions. The strength of the front and rear longitudinal beams, In particular, the strength of the sinking area of ​​the rear section of the front longitudinal beam is crucial to the vehicle's offset performance. For a 40% offset collision, since less than half of the vehicle's structure participates in the collision, the vehicle body is relatively soft, and the vehicle body is relatively soft. The deformation is serious during the collision, and the large intrusion of the car body will result in insufficient living space for the occupants in the car, especially the large intrusion of the front panel of the vehicle, resulting in greater calf injury

The front and rear longitudinal beam structures are mostly tailor-welded parts, the structure and function are relatively simple, and there are many welding parts, which makes welding inconvenient, low welding efficiency, and poor welding stability.

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