Method for straightening cross-beam of car and apparatus thereof

Abstract

A method for straightening the deformed frame of car includes such steps as detaching, straightening the deformed parts, repairing the damaged parts by welding and redrilling, ageing, assembling with screw bolts and nuts, and cold rivetting by using rivets to replace the screw bolts and nuts. Its apparatus is also disclosed.

Description

1. Technical field [0001] The invention relates to a straightening method and equipment for automobile girders, which are suitable for straightening method and equipment for bent and deformed automobile girders. 2. Background technology [0002] At present, most of the cars are scrapped after a large amount of deformation, which causes a lot of waste. Although in some car repair stations, the frame of the deformed car is also aligned, and the overall correction is generally used. This method cannot eliminate internal defects caused by the deformation of the frame. Stress makes the corrected girder easy to break or deform under the action of stress after using for a period of time, which will easily cause the vehicle to tremble during driving, deviation and rollover accidents during braking. Some use the thermal cutting method to remove the partially deformed and scrapped rivets. After re-riveting, this method is likely to cause internal stress between the girder and other be...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the cars are scrapped after a large amount of deformation, which causes a lot of waste. Although in some car repair stations, the frame of the deformed car is also aligned, and the overall correction is generally used. This method cannot eliminate internal defects caused by the deformation of the frame. Stress, so that the corrected girder is prone to breakage or deformation under the action of stress after a period of use, which will easily cause the vehicle to tremble during driving, deviation and rollover accidents during braking.

Some use thermal cutting to remove partially deformed and scrapped rivets. After re-riveting, this method is likely to cause internal stress between the girder and other beams, resulting in a decline in the performance of the reassembled girder.

Since only the deformed or damaged parts and rivets are replaced, after reassembly, the riveting force of the new and old rivets is inconsistent, which destroys the overall design vibration frequency of the girder, and the overall vibration consistency is poor, which easily leads to the breakage of the girder

The existing straightening equipment of automobile girders cannot effectively prevent the new deformation of the girder during the straightening process, nor can it straighten the scrapped deformed girders. degree is also difficult to guarantee

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