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一、引言内孔研磨是设备修理中常用的加工方法之一。对于轻微磨损的孔,可直接通过研磨加以修复;对于磨损比较严重的孔,须先通过机械加工提高其精度和光洁度,然后进行研磨,使孔的精度和光洁度进一步提高。然而,我们在生产实践中,例如修研C620-1B型普通车床用来移动顶尖套的尾架通孔,孔径φ72mm、长度375mm,发现经过修镗的内孔在研磨后,其几何形状误差反而加大了。我们通过反复的试验
I. Introduction Inner hole grinding is one of the commonly used processing methods in equipment repair. For slightly worn holes, it can be repaired directly by grinding. For holes with more severe abrasion, the accuracy and finish of the holes must be machined first, and then the grinding is performed to further improve the precision and finish of the holes. However, in our production practice, for example, the research on the C620-1B lathe is used to move the tailstock through hole with the diameter of φ72mm and the length of 375mm. It is found that the geometric errors of the repaired inner hole after grinding are reversed Increased. We passed the test repeatedly