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要获得高精度和高光洁度的薄壁套零件内孔,采用超精磨削无疑是一种比较经济的加工方法。当然,其中提高机床头架主轴-磨具系统的刚度和旋转精度固然是一个主要的方面。但是,正确的夹紧方式和合理的磨削规范,对提高工件磨削质量也起到极为重要的作用。本文主要结合实践,就在改装的普通型内圆磨床上对薄壁套内孔超精磨削,所使用的夹具以及磨削规范中有别于一般内圆磨削的特点作一介绍。一、工件安装 1.夹紧形式当采用三瓜卡盘夹紧薄壁套外径对内孔进行磨削时,往往由于夹紧力集中和导热不均,而引起工件的弹性变形和变形,使加工后的薄壁
To obtain high-precision and high-finish thin-walled parts bore hole, the use of super-precision grinding is undoubtedly a more economical method of processing. Of course, which improve the rigidity of the machine headstock spindle grinding system and rotation accuracy is a major aspect. However, the correct clamping method and reasonable grinding specifications, to improve the quality of workpiece grinding also plays an extremely important role. In this paper, mainly with practice, on the modified common type internal grinder on the thin-walled sleeve hole ultra-precision grinding, the use of the fixture and the grinding specifications are different from the general features of the internal grinding for an introduction. First, the workpiece installation 1. Clamping When the use of three melon chuck clamping thin-walled outer diameter of the hole for grinding, often due to the clamping force concentration and uneven heat, which caused the workpiece elastic deformation and deformation, After processing the thin wall