Automobile Body Skeleton and Its Design Method

Abstract

The invention relates to an automobile body frame and a design method thereof. The frame of the vehicle body includes a large top frame, a left side frame, a right side frame, a front frame, a rear frame and a floor frame, a total of six large frames. Each frame includes support beams and connecting beams crossed at the ends of the support beams. The end of the supporting beam is provided with an eversion edge, and the connecting beam has a mating surface for overlapping with the eversion edge, and the supporting beam inside the large frame is lapped on the connecting beam through a spot welding process, and the connecting beam has Openings, the openings of the connecting beams of the two adjacent skeletons are arranged opposite to each other, and a closed structural member is formed by a spot welding process. The support beams and connecting beams inside the large frame are overlapped by spot welding to realize the welding of the large frame and improve the welding accuracy; the connecting beams of the two adjacent frames form a closed structural part through the spot welding process to realize the combined assembly of the large frame , can meet the strength and rigidity and other performance, and accurate positioning, high assembly precision.

Description

technical field [0001] The invention relates to an automobile body frame and a design method thereof. Background technique [0002] The car body frame is an effective guarantee for providing space and safety for passengers. A large car body is composed of a frame and metal skin parts. The Chinese patent document with the announcement number CN203727485U and the announcement date of July 23, 2014 discloses a car body frame, including a large roof frame formed by welding rectangular tubes, a left side frame, a right side frame, and a front wall. There are six large pieces of skeletons including the frame, the rear wall frame and the floor frame, and then the large pieces of frames are welded and assembled to form the vehicle body frame. This traditional body frame adopts a steel structure design method, which has certain limitations on the development and manufacture of the automobile body frame. Arc welding is used when welding rectangular pipes, which has the problems of l...

AI Technical Summary

Problems solved by technology

Arc welding is used when welding rectangular tubes, which has the problems of large welding deformation, low precision, and difficult assembly. At the same time, a large amount of smoke and arc light generated by arc welding is not conducive to human health.

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