磁力光整加工永磁极结构参数设计及仿真  

Design and Simulation Research of the Magnetic Poles' Structure Parameters on Magnetic Abrasive Finishing System

作　　者：赵文聪[1] 张桂香[1] 陈春增[1] 

机构地区：[1]山东理工大学机械工程学院,淄博255049

出　　处：《机械设计与研究》2016年第6期106-109,共4页Machine Design And Research

基　　金：山东省自然科学基金(ZR2015EL029);国家自然科学基金(51375285)

摘　　要：在磁力研磨加工中,磁极结构形状和参数是影响其加工效率的主要因素之一。本文以XK7136C数控铣床为加工平台,将主轴头头部更换为永磁研磨磁极,对磁极结构形状和参数进行研究。设计符合加工使用的两种不同形状的磁极,利用Ansys仿真软件对其磁场进行有限元分析。通过仿真分析及试验验证发现,两种不同形状的磁极与普通磁极相比都能提高磁力光整加工的效率,同时开槽后的锥形磁极比球形磁极的端面在磁力线分布上更加密集,聚磁能力更好。试验研究发现,镍基高温合金Inconel 718的表面粗糙度在21分钟内由Ra0.502μm下降到Ra0.059μm,表面显微硬度和残余应力也有所改善,设计的磁极结构参数更有利于磁力光整加工。In magnetic abrasive finishing , the structure shape and parameters of the magnetic pole is one of the main factors affecting its processing. In this article taking the XK7136C CNC milling machine as the processing platform, the spindle head is replaced by a permanent grinding pole and the structure shape and parameters of the magnetic pole are researched Two different shapes of poles used in processing is designed, and the finite element analysis of its magnetic field is analyzed by Ansys simulation software. It is discovered by simulation analysis and experimental verification that two different shapes of the magnetic poles could improve the efficiency of finishing more than the common pole. At the same time, it is also found that the distribution of magnetic field lines on the surface of the tapered magnetic pole is more dense than that of the spherical magnetic pole, the magnetic flux capability of the tapered magnetic pole is more well than that of the spherical magnetic pole and the surface roughness of the Nickel- based superalloy Inconel 718 was reduced from 0. 502μm to 0. 059 μm within 21 minutes. The structure shape and parameters of the magnetic pole designed in this paper are more favorable for magnetic abrasive finishing.

关 键 词：磁力研磨 磁极仿真 锥形磁极 球形磁极 

分 类 号：TH16[机械工程—机械制造及自动化]