Investigation of combined vibratory-abrasive treatment in vibratory mixing system with an active working element

The article presents the results of the experimental study of the vibratory-abrasive processing of decorative elements carried out in the combined-action machine that simultaneously generates controllable vibrational and rotational effects on the medium within the working chamber. This processing approach enables optimization of interaction conditions between free abrasive media and processed parts by increasing contact interaction forces through the additional force generated by rotation of the active working element.To perform the experimental investigation, a new design of the combined vibratory machine was specially developed and manufactured. The shape, material, and quantitative ratio of tumbling media and processed parts within the working medium were selected and optimized. The main variable factors of the process were identified as the amplitude of vibration, the rota-tional speed of the working chamber, and the mass of the media loaded into the chamber.To study the impact of these factors on the efficiency of the processing, the second-order three-factor experiment was designed and conducted, with systematic variation in the levels of each factor according to the experimental plan. The specific material removal rate from the surface of the parts was adopted as the quantitative efficiency criterion.The experimental data were processed using statistical methods, and a regression model was constructed to define func-tional dependence of the specific material removal rate on the key process parameters. This enables predictive evaluation of process performance. Available optimal operating modes of the machine has been confirmed, which ensure the highest process efficiency with optimal energy consumption.The experimental methodology presented in this article can be applied to optimize technological regimes of newly devel-oped or modernized vibratory equipment designs with active working elements, aimed at creating energy-efficient solutions in the field of vibratory-abrasive surface treatment.