Design method for covering tension mechanical device

Abstract

The invention relates to a design method for a covering tension mechanical device. The covering tension mechanical device designed according to the design method comprises a convex die (1), a concave die (2), a jack (4), a support frame (5), a guide rail (6) and a support rod, wherein the convex die (1) and the concave die (2) are integrally connected through a bolt in a corresponding concave-convex mode to form a clamping device, the bottom of the clamping device is fixedly connected at the top of the support rod (7), the bottom of the support rod (7) is arranged on the guide rail (6), the guide rail (6) is fixedly connected on a base of the support frame (5), and the jack (4) is positioned between the support frame (5) and the support rod (7). The covering tension mechanical device can guarantee good flatness of stress covering when being attached to a car body framework, improves surface quality after covering welding and powerfully guarantees paint surface flatness.

Description

Technical field [0001] The invention relates to a mechanical device, in particular to a design method of a skin tensioning mechanical device. It belongs to the field of stress skin tensioning of passenger cars. Background technique [0002] At present, for city buses and highway buses produced in small batches, one end of the skin is fixed to the body frame by welding, and the other end is stretched. The spatial tensioning work cannot guarantee the flatness of the skin, especially for wider ones. Due to gravity, the skin sags seriously, and the tension of the skin is obviously insufficient. It is difficult to ensure the smoothness and weldability of the skin. Summary of the invention [0003] The object of the present invention is to provide a design method of a mechanical device capable of stretching the side skin of a passenger car body. The mechanical device of the skin designed by this design method can ensure good flatness when the side stress skin is attached to the body f...

AI Technical Summary

Problems solved by technology

[0002] At present, for city buses and road buses produced in small batches, one end of the skin is welded and fixed on the body frame first, and the other end is stretched, and the tension work is carried out in space, which cannot guarantee the flatness of the skin, especially for wider skins. Due to gravity, the skin sags seriously, and the tension of the skin is obviously insufficient, so it is difficult to ensure the smoothness and weldability of the skin

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