Technological effect of vibroprocessing by flows of organic granular media

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Lebedev, V.A.^1 ; Shishkina, A.P.^1 ; Davydova, I.V.^1 ; Morozova, A.V.^2

Donskoy State Technical University, Gagarina Sq. 1, Rostov-on Don

344000, Russia^1

Bryansk State Technical University, Boulevard of 50 let Oktyabrya 7, Bryansk

241035, Russia^2

关键词: Amplitude frequency characteristics;    Frequency of oscillation;    Granular media;    Granular medium;    Physical meanings;    Removal of metals;    Threshold amplitude;    Working chambers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/4/042061/pdf
DOI  :  10.1088/1757-899X/327/4/042061

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The analysis of approaches to modeling of vibrational processing by granulated media is carried out. The vibroprocessing model which provides effective finishing of the surfaces of the parts due to the stone fruit organic media granules is developed. The model is based on the granule flow energy impact on the surface being treated. As the main characteristic of the organic media processing, a specific volumetric metal scrap is used, the physical meaning of which is the increase rate in the thickness of the material removed from the surface at a given velocity and pressure of the medium. It is shown that the metal scrap depends on the medium flow velocity, the height of the loading column of the granular medium, and the conditions for the formation of a medium stationary circulation motion. Based on the analysis of the results of experimental studies of the influence of amplitude-frequency characteristics on the removal of metal in the process of vibroprocessing with abrasive granules, the dependence of the specific volume metal removal is proposed for organic media processing, taking into account the threshold amplitude and frequency of oscillations of the working chamber, at which the effect of surface treatment is observed. The established set of relationships describing the effective conditions for vibroprocessing with stone organic media was obtained using experimental data, which allows us to assume that the model obtained is valid.