磁力研磨加工的永磁极结构优化设计

Simulation design of permanent magnetic pole on magnetic abrasive finishing

通过分析总结磁力研磨加工机理及永磁极结构,得出磁极端面形状对空间磁场分布的影响是决定磁力研磨加工表面质量和加工效率的关键因素。利用ANSYS软件对磁极进行建模与仿真,并对比分析仿真结果中磁力线的分布和磁场强度的分布,其结果表明,去除磁极端面中心部分材料半径与端面半径之比为1∶3的材料且在磁极端面开矩形槽的深宽之比为1∶1时,加工区域产生的磁场强度值可达到0.85~1.2T,且能获得较高的磁场强度梯度。这种利用仿真软件指导磁极设计的方法,为磁极的设计改进提供了理论依据和参考方案。

Based on analysis of the magnetic grinding mechanism and the permanent magnet pole structure draw the shape of the pole surface is the key factors which impact of magnetic field distribution and magnetic abrasive quality. Magnet pole is simulated by ANSYS,and distribution of the magnetic field lines and magnetic field intensity were comparatively analyzed. It is concluded that when the ratio of the radius of removal material and bottom material is 1∶ 3 and the ratio of rectangular slot depth and width is 1∶ 1,the magnetic field strength generated by the processing area can reach 0. 85 ~ 1. 2T. This design method based on the simulation software provide a theoretical reference for design of magnet pole.