薄环精密件的高精度、高效率的端面磨削  

End Grinding for Precision Thin-ring Parts with High Accuracy and Efficiency

作　　者：姚茂明[1] 孙静[1] 靖崇龙[1] 

机构地区：[1]南京电子技术研究所,江苏南京210013

出　　处：《电子机械工程》2007年第5期47-50,共4页Electro-Mechanical Engineering

摘　　要：薄环精密件的高精度磨削一直是磨削领域中重要的研究内容,薄环零件的刚性差,而且热容量小,磨削热量又比较大,极易造成较大的变形。文中介绍了该类零件加工中一种行之有效的解决方案——柔性装夹。该柔性装夹工装是一件普通的外圆磨削心轴,在心轴根部的凹槽中放置了圆环状的弹性材料,用以衬紧工件,并提供工件旋转的驱动。通过该柔性装夹方式,在外圆磨床上实现了薄壁件端面的线性磨削,很好地降低了磨削热量的产生,充分冷却还提高了散热效果。某薄壁件的直径/厚度接近18,厚度4±0.01。在该磨削实例中,常规磨削的加工时间约为180分钟/件,合格率60%,而柔性装夹的加工时间约为12分钟/件,合格率98%,取得了非常不俗的实际磨削效果。The end grinding of precision thin-ring parts with high accuracy has always been an important research subject in the grinding field. The thin-ring part is characterized by weak rigidity, low thermal capacity, and large amount of heat in grinding, all of which tend to cause deformation easily during grinding. In this paper, an effective solution-flexible clamping is introduced for grinding this kind of part. The flexible clamp is a general cylindrical grinding mandrel. The circular elastic material is put in the groove at the end of the mandrel, which helps to clamp the workpiece and drive its rotation. With such a flexible clamping, the linear grinding of the end surface of thin-walled parts is achieved in the cylindrical grinding machines, reducing the grinding heat and improving the effect of heat dispelling. The diameter thickness of one thin-walled part is about 18 mm, and the thickness is 4 ±0.01 mm. The conventional grinding time is about 180 min/piece, and the qualification rate is 60 percent ; in the case of the flexible clamping, the grinding time is shortened to about 12 min/piece, and the qualification rate is improved to 98 percent. Therefore, it is obvious that the new clamping method can help improve the grinding effect greatly.

关 键 词：薄环精密件 高效率 端面磨削 柔性装夹 

分 类 号：TG580.6[金属学及工艺—金属切削加工及机床]