Abstract
To solve the problems of the low use rate of magnetic fields and weak magnetic field intensity caused by the use of only a one-sided magnetic pole in the design of the magnetic field device based on permanent magnets in the usual magnetorheological polishing process, a design method and a mathematical model of the dynamic magnetic field device based on the Halbach array are set up in this paper. Through the simulation and experimental research of two different array forms, the ideal magnetic field layout scheme is determined in the form of a circularly symmetrical array, and the effects of process parameters such as the magnetic field speed, the workpiece speed, and the workpiece immersion depth in the polishing pad on the surface roughness of the workpiece after polishing are studied. The orthogonal experimental results show that when the magnetic field is at a low speed of 40r/min, the workpiece is at a medium speed of 650r/min, and the workpiece is immersed in the upper and middle depth of the polishing pad, in which the workpiece can obtain better surface roughness. The research results also show that the dynamic magnetic field device based on the Halbach array can achieve greater changes in magnetic field intensity and gradient with fewer magnets, which provides a reference method for the small and lightweight design of magnetic field devices in magnetorheological polishing.
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Funding
This study is supported by the postgraduate innovation funding project of Hebei province (CXZZBS2022130) and Education and Teaching Reform Project of Yanshan University (2020SJJG07).
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Mingli Xie: writing and content analysis; Zijun An: supervising and proof-reading; Jin Zhuang: experiment and data analysis.
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Xie, M., An, Z. & Zhuang, J. Design and experimental research of dynamic magnetic field device based on Halbach array in magnetorheological polishing. Int J Adv Manuf Technol 120, 5807–5822 (2022). https://doi.org/10.1007/s00170-022-09134-y
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DOI: https://doi.org/10.1007/s00170-022-09134-y