Method for machining anti-side-rolling torsion bar shaft of railway vehicle and floating grinding device thereof

Abstract

The invention relates to a method for machining an anti-side-rolling torsion bar shaft of a railway vehicle and a floating grinding device thereof. The method comprises the following steps of: blanking a polished raw material according to a length required by an anti-side-rolling torsion bar shaft, wherein the polished raw material is directly adopted; horizontally placing the polished raw material on a horizontal upsetting and molding machine and clamping the polished raw material by a die on the horizontal upsetting and molding machine; upsetting two ends of the material through a horizontal upsetting hammer on the horizontal upsetting and molding machine to change the material into a dumbbell-shaped structure; carrying out heat treatment on the upsetting anti-side-rolling torsion bar shaft upset into the dumbbell-shaped structure, wherein a well type furnace is adopted to heat in the heat treatment, and the product is guaranteed to be in a vertical state all the time in the processes of heating and quenching; carrying out fine machining on the torsion bar shaft subjected to the heat treatment through floating grinding; and finally, carrying out blasting surface strengthening treatment on the grounded anti-rolling torsion bar shaft. In the invention, the elastic floating grinding device is connected with a lathe saddle through a mounting base, and an abrasive belt is a foldable circumferential band-shaped structure and supported through three rollers.

Description

technical field [0001] The invention belongs to a processing method and a processing device for rail transit vehicle parts, in particular to a processing method for a rail transit vehicle anti-roll torsion bar shaft installed on a rail vehicle body or a bogie and a floating grinding device thereof . Background technique [0002] Due to the characteristics of small vertical stiffness and large equivalent deflection, air springs are very suitable for the development of secondary suspension of rail vehicles, and have been increasingly widely used in recent years. However, due to the small vertical stiffness of the air spring, the roll angle of the vehicle will increase during the operation of the vehicle, resulting in a small roll stiffness of the vehicle, and even the phenomenon of roll instability, resulting in a decrease in the safety and smooth running performance of the vehicle. It is necessary to increase the roll stiffness of the vehicle separately to limit its roll ang...

AI Technical Summary

Problems solved by technology

The main disadvantage of this kind of processing is that the streamline of the metal fibrils is damaged, and in addition, the better material of the surface layer is processed during the turning process, which makes the fatigue performance of the torsion bar shaft poor and the waste of raw materials is serious.

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