Saint Petersburg Mining University, Saint Petersburg, Russia:

V. V. Maksarov, Dean of the Mechanical Engineering Faculty, Professor, Doctor of Technical Sciences, e-mail: maks78.54@mail.ru
D. D. Maksimov, Postgraduate Student at the Department of Mechanical Engineering, e-mail: imwacako@gmail.com
M. S. Sinyukov, Master’s Student at the Department of Mechanical Engineering, e-mail: sms-0305@yandex.ru

This paper examines the problem of monitoring and ensuring the surface quality of complex geometry items made of aluminium alloys. The authors describe the process features related to the manufacturing of complex geometry items and analyze negative factors associated with edge cutting machining of aluminium alloys. This research aimed at developing such a technique that would ensure uniformity and quality along the entire contour of the machined surface. The object of research is the process of magnetic abrasive finishing of complex contour surfaces in aluminium alloy items, whereas the subject of research is the roughness of the machined complex contour surface. The paper describes a process of magnetic abrasive finishing designed for complex contour surfaces when the magnetic surfaces follow the contour of the machined surface. To prove the practicability of the proposed process, the authors built a comprehensive model of the process. Thus, a model of the magnetic field in the working gap and a graph showing the distribution of magnetic induction along the center line of the working gap were built. The authors analyzed the dynamics of the magnetic-abrasive mass during magnetic abrasive finishing of a complex contour surface. The results of the conducted study can be used to analyze the relationship between the dynamics of the magnetic-abrasive mass and the roughness of the machined surface. The required quality was achieved on those areas of the complex contour surface where the dynamics of the magnetic-abrasive mass was higher.

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