摘要
圆柱滚子凸度超精导辊理论辊形是复杂轴对称曲面,目前通常在普通外圆磨床上用多级锥面逼近的方法进行磨削加工,磨削质量对人工依赖性强,效率低。根据磨削时常见的圆弧形滚子贯穿轨迹,研究辊形曲面的包络法数控磨削。分析了理论辊形特征、包络磨削原理和方法,给出了磨削实例,实际测量了磨削后的辊形,并用包络法磨削的导辊进行了圆柱滚子凸度超精试验。结果表明:理论磨削后辊形曲线是光滑连续曲线,形状总体比较平缓;用大圆弧廓形砂轮进行包络法磨削,辊形形状精度不存在原理性加工误差,而且砂轮利用率比较高,有利于保证磨削质量和效率;包络法磨削导辊辊形精度和效率都比较高,导辊用于圆柱滚子超精获得的滚子凸度曲线形状良好。
The theoretical shape of guiding rollers for superfinishing convexity of cylindrical rollers is a complex axisymmetric surface.At present,grinding guiding rollers is usually carried out in ordinary cylindrical grinder by method of multi-stage conical surface approximation.The grinding quality is highly dependent on manual work,resulting in low efficiency.Based on common arc-shaped roller penetration trajectory during grinding,the enveloping NC grinding of guiding roller surface is studied.The theoretical shape characteristics of guiding rollers,principle and method for envelop grinding are analyzed,and the grinding example is given.The shape of guiding rollers after grinding is measured in practice,and the superfinishing test of convexity of cylindrical rollers is carried out with guiding rollers after enveloping grinding.The results show that:the theoretical shape curve of guiding rollers ground is a smooth and continuous curve with a generally gentle shape;when a large arc profile grinding wheel is used for enveloping grinding,there is no principle processing error in shape accuracy of guiding rollers,and the utilization rate of grinding wheel is relatively high,which is conducive to ensure the grinding quality and efficiency;the shape accuracy of guiding rollers and enveloping grinding efficiency are high,and the guiding rollers are used for superfinishing of cylindrical rollers to obtain a good shape of roller convexity curve.
作者
马长春
高作斌
王瑞琨
曹阳
郭卫杰
MA Changchun;GAO Zuobin;WANG Ruikun;CAO Yang;GUO Weijie(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,China;Jing-Jin Electric Technologies Co.,Ltd.,Beijing 100102,China)
出处
《轴承》
北大核心
2023年第7期24-31,共8页
Bearing
基金
2021年产业基础再造与制造业高质量发展专项(TC210H02Q)。
关键词
滚动轴承
圆柱滚子
凸度
超精加工
导辊
包络法加工
rolling bearing
cylindrical roller
convexity
superfinishing
guiding roller
envelope processing
