Vibration deformation residual stress reduction device

Abstract

The invention relates to a vibration deformation residual stress reduction device, which comprises a vibration aging bracket, a vibration stress relief device, a vibration stress relief device and a vibration stress relief device, wherein a bracket for fixing a workpiece is arranged on the vibration stress relief bracket; the tension mechanism is fixed on the vibration aging bracket and is used for applying tension to the workpiece; and the excitation mechanism is arranged on one side of the vibration aging bracket and is used for carrying out aging vibration on the workpiece and reducing residual stress. A workpiece is fixed through the vibration aging bracket; the tension mechanism applies tension to the workpiece; and the excitation mechanism carries out aging vibration on the workpiece to reduce residual stress. Dynamic stress is transmitted through an excitation head installed on a vibration experiment table, when the internal stress of a material exceeds the yield strength of the material under the combined action of the residual stress of the component, the dynamic stress and applied tension, a high-stress area of the component can generate plastic yield, so that the residual stress is reduced and homogenized, and the yield strength of the component is improved. Compared with a traditional vibration aging process, the method has the advantages that the applied tension action is added, so that the residual stress reduction effect is more obvious.

Description

technical field [0001] The present application relates to the technical field of machining, in particular to a device for reducing residual stress through vibration deformation. Background technique [0002] At present, traditional methods such as natural aging and thermal aging are usually used in engineering to reduce residual stress. [0003] Among them, natural aging (NSR) is simple and easy to implement, but the aging period is too long and the efficiency is low, which cannot meet the needs of rapid production; thermal aging (TSR), as the most widely used traditional treatment method, has a good aging effect, but needs It consumes a lot of energy, and also causes defects such as oxidation and decarbonization. Under the influence of increasingly perfect vibration theory and testing technology, the method of eliminating residual stress through vibration treatment, also known as Vibratory Stress Relief (VSR) technology, is gradually replacing natural aging and thermal agi...

AI Technical Summary

Problems solved by technology

[0005] (1) The size of the target workpiece is limited, and it is not friendly to the clamping of small and medium-sized parts and flexible bodies such as steel plates;

[0006] (2) For flexible bodies such as small and medium-sized parts and steel plates, it cannot achieve a good residual stress reduction effect

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