High-precision centering and positioning device for frame detection system

Abstract

The invention discloses a high-precision centering and positioning device for a frame detection system. The high-precision centering and positioning device comprises a front support BASE plate and a rear support BASE plate. The two ends of the front support BASE plate and the two ends of the rear support BASE plate are each provided with a vertical plate located outside frame longitudinal beams. A front vertical positioning pin and a rear vertical positioning pin are arranged at the position of the center of the front support BASE plate and the position of the center of the rear support BASE plate correspondingly. The front vertical positioning pin and the rear vertical positioning pin are matched with a first positioning hole and a second positioning hole correspondingly, wherein the first positioning hole and the second positioning hole are formed in a frame beam. A front left horizontal positioning pin, a front right horizontal positioning pin, a rear left horizontal positioning pin and a rear right horizontal positioning pin are arranged on the vertical plates at the same horizontal height correspondingly and are matched with a third positioning hole, a fourth positioning hole, a fifth positioning hole and a sixth positioning hole correspondingly, wherein the third positioning hole, the fourth positioning hole, the fifth positioning hole and the sixth positioning hole are formed in the outer side faces of the frame longitudinal beams. The high-precision centering and positioning device is simple in structure, easy to manufacture and high in positioning precision, detection data of a frame assembly can be truly reflected, and the quality control effect is improved.

Description

technical field [0001] The invention relates to the technical field of automobile assembly, in particular to a high-precision centering and positioning device for a vehicle frame detection system. Background technique [0002] The positioning device of the existing vehicle frame detection system is composed of two positioning pins as the detection reference. When performing detection, the positioning pins must first be sleeved in the circular positioning holes provided on the vehicle frame assembly for positioning. Due to various complex factors such as large amount of welding of the frame, uneven welding gaps between parts, and difficulty in fixing the welding sequence, the deformation of each part of the frame assembly is large, and the deformation is irregular, so that the coordination between the positioning pin and the positioning hole Deviations often occur. In order to ensure the smooth assembly of the two, the aperture of the positioning hole will be enlarged, which...

AI Technical Summary

Problems solved by technology

Due to various complex factors such as large amount of welding of the frame, uneven welding gaps between parts, and difficulty in fixing the welding sequence, the deformation of each part of the frame assembly is large, and the deformation is irregular, so that the coordination between the positioning pin and the positioning hole Deviations often occur

In order to ensure the smooth assembly of the two, the aperture of the positioning hole will be enlarged, which will cause deviation of the positioning reference, cause the detection data to be distorted, and cannot truly reflect the actual accuracy of the frame, which will have a great impact on quality control.

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