基于金刚石固结磨具的圆柱滚子高效研磨工艺研究  

Research on high efficiency lapping process of cylindrical roller based on consolidated diamond abrasive tool

作　　者：雷阳 杨晓光[2] 冯凯萍 周兆忠[3] 袁巨龙 LEI Yang;YANG Xiaoguang;FENG Kaiping;ZHOU Zhaozhong;YUAN Julong(College of Special Equipment, Hangzhou Vocational and Technology College, Hangzhou 310018, China;Publicity Department of Party Committee, Hangzhou Vocational and Technology College, Hangzhou 310018, China;College of Mechanical Engineering, Quzhou University, Quzhou 324002, Zhejiang, China;Key Laboratory of Special Purpose Equipment and Advanced Processing Precision Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China)

机构地区：[1]杭州职业技术学院特种设备学院,杭州310018 [2]杭州职业技术学院党委学工部,杭州310018 [3]衢州学院机械工程学院,浙江衢州324002 [4]浙江工业大学,特种装备制造与先进加工技术教育部重点实验室,杭州310014

出　　处：《金刚石与磨料磨具工程》2021年第3期74-81,共8页Diamond & Abrasives Engineering

基　　金：浙江省自然科学基金项目(LZY21E050004);衢州市科技项目(2019K10)。

摘　　要：针对圆柱滚子高精密研磨加工过程中效率低下的问题,在双平面偏心盘式圆柱滚子抛光方法基础上,提出基于金刚石固结磨料磨具的圆柱滚子研磨方法。自制金刚石丸片,用上下盘黏附的金刚石丸片对圆柱滚子进行超精密研磨加工,研究丸片中不同金刚石微粉粒度代号、砂结比及研磨液黏度对圆柱滚子表面粗糙度、材料去除率、平均圆度误差及批直径变动量的影响。结果表明:圆柱滚子的材料去除率和表面粗糙度均随金刚石微粉粒度代号增大而增大;金刚石丸片的砂结比太大或太小都会导致圆柱滚子材料去除率下降,进而影响其表面粗糙度;合适的研磨液黏度,可以改善研磨时的润滑性能,防止大颗粒磨粒划伤工件表面。当金刚石微粉粒度代号为M2/4,丸片砂结比为1.6,研磨液黏度为5.380 mPa·s时,圆柱滚子的材料去除率达1.70μm/min,表面粗糙度Ra从0.081μm下降到0.025μm,平均圆度误差从1.085μm下降为0.553μm,批直径变动量RDWL从6μm下降为2μm,圆柱滚子研磨效率和精度显著提高。To solve the problem of low efficiency in the high precision grinding process of cylindrical roller,on the basis of double plane eccentric disc polishing method,the lapping method of cylindrical roller based on diamond consolidated abrasive tool is proposed.In order to study the influences of different diamond powder size code,ratio of sand to binder and slurry viscosity on the surface roughness,the material removal rate,the average roundness error and the batch diameter variation of cylindrical roller,the ultra precision lapping of cylindrical roller was carried out by using self-made diamond pellets attached to the upper and lower plates.The results show that the material removal rate and the surface roughness of cylindrical roller increase with the increase of diamond powder size code.If the ratio of sand to binder of diamond pellet is too large or too small,the material removal rate of cylindrical roller will decreases,and then the surface roughness will be affected.The proper viscosity of the lapping fluid can improve the lubrication performance and prevent large particles from scratching the surface of the workpiece.When the size code of diamond powder is M2/4,the pellet ratio of sand to binder is 1.6,and the viscosity of the lapping liquid is 5.380 mPa·s,the material removal rate of cylindrical roller is 1.70μm/min,the surface roughness Ra decreases from 0.081μm to 0.025μm,the average roundness error decreases from 1.085μm to 0.553μm,the batch diameter variation RDWL decreases from 6μm to 2μm,and the lapping efficiency and precision of cylindrical roller are significantly improved.

关 键 词：圆柱滚子轴承 金刚石丸片 表面粗糙度 偏心盘式研磨 

分 类 号：TG58[金属学及工艺—金属切削加工及机床] TG74