摘要
针对普通磁力研磨法去除微细孔相贯线处毛刺效率低且研磨质量不均匀的问题,提出了一种振动辅助磁力研磨技术。采用振动电机产生振动辅助磁力研磨,通过改变工件及磁针的运动轨迹,实现对微细孔相贯线处毛刺的去除。对比了添加振动前后表面加工质量和材料去除量的变化,并利用单因素试验分析了振动辅助磁力研磨加工过程中振幅对表面加工质量和材料去除量的影响。试验结果表明:振动辅助磁力研磨技术实现了对微细孔相贯线处毛刺的去除;相比普通磁力研磨,振动式永磁研磨机的研磨效果更好,研磨效率更高,且当振幅为4mm左右时,更有利于加工效率和表面加工质量的同时提高;研磨后的表面残余应力由+101.5MPa拉应力转变为约-115.5MPa的压应力状态,从而获得更好的表面应力状态。
It is put forward a method of vibration assisted magnetic abrasive finishing(VAMAF)to deburring on intersection line of pinhole,because of these problems which were lower burr removal rate and uneven surface quality after polishing by magnetic abrasive finishing(MAF).Using vibration motor to produce vibration to changing the movement direction of workpiece and needles and then the curve of the micro hole burrs were removed effectively.Contrast the surface machining quality and machining efficiency change before and after applying vibration in MAF,and using the single factor experiment to analyze the influence of amplitude on the surface machining quality and efficiency in VAMAF.The results show that the vibration assisted magnetic abrasive finishing technology could be remove burrs on the intersection line of pinhole;Compared to MAF,VAMAF can received better grinding effect and higher grinding efficiency,and more conducive to improve machining efficiency and surface quality at the same time when the amplitude is about 4 mm;it changed the surface residual stress value which is reduced from+101.5 MPa to-115.5 MPa,in order to gain a better surface stress state.
作者
李阔
陈燕
周传强
LI Kuo;CHEN Yan;ZHOU Chuan-qiang(Institute of Advanced Grinding Technology,University of Science and Technology Liaoning,Anshan Liaoning 114051,China)
出处
《组合机床与自动化加工技术》
北大核心
2018年第3期26-29,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
国家自然科学基金资助项目(51105187)
辽宁科技大学研究生教育改革与科技创新创业项目(LKDYC201607)
关键词
振动辅助
磁力研磨
加工效率
毛刺
vibration-assisted
magnetic abrasive finishing
machining efficiency
burr
