摘要
以主轴改造后的XK7136C数控铣床为平台,以AZ31系镁合金与7075-T651铝合金为研究对象,通过理论计算与磁场仿真,设计出适用于加工铝镁合金结构材料平面的强永磁材料磁极,并采用雾化快凝球形磁性磨粒进行试验,以验证该种光整加工方法的可行性及球形磨粒性能。使用"米字槽"与"田字槽"两种磁极分别对两种材料进行研磨实验。实验结果表明:两种端面开槽方式均可防止磨料的局部堆积,保证磨料的流动性,并使端面磁通密度增大,磁场强度梯度增大,提高研磨效率。两种磁极所研磨表面粗糙度分别为0.126μm和0.148μm,端面拥有更大磁通密度的"田字槽"磁极前期研磨效率更佳。
Based on the XK7136 C CNC milling machine with spindle modification,the AZ31 seriesmagnesium alloy and 7075-T651 aluminum alloy were used as the research objects. The theoreticalcalculation and magnetic field simulation were used to design the strong permanent magnet material for themachining of aluminum-magnesium alloy structural material magnetic poles, and the use of atomizedfast-rolling spherical abrasive particles was tested to verify the feasibility of the finishing method and sphericalabrasive performance.＂Tian word slot＂and＂Mi word slot＂magnetic poles were used to test the two kinds ofmaterials respectively. The experimental results show that two kinds of end slotting methods may prevent thelocal accumulations of abrasives,ensure the abrasive flowability,and increase the magnetic flux density andimprove the grinding efficiency. The surface roughness of the two poles are as 0.126 μm and 0.148 μmrespectively. The end faces with a stronger magnetic flux density of the＂ Tian word slot＂magnetic pole aremore efficient in the prophase polishing processes.
作者
张鹏
张桂香
梁伟
秦璞
姜林志
ZHANGPeng;ZHANG Guixiang;LIANGWei QIN;Pu JIANG;Linzhi(School of Mechanical Engineering, Shandong University of Technology, Zibo, Shandong, 25504)
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2018年第11期1324-1328,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51675316)
关键词
磁极设计
磁场仿真
磁力光整加工
表面质量
magnetic pole design
magnetic field simulation
magnetic abrasive finishing
surface quality
