座标镗床、座标磨床、座标电火花加工机床主轴套筒由于上下运动引起的磨损和拉毛问题,直接影响着该类机床使用寿命和质量的提高。 套筒引起磨损和拉毛的主要原因是: 1.套筒在箱体孔中常处于垂直安装位置,间隙很小(只有 3～5μm),润滑油贮存条件差;同时,套筒运动使之处于半干摩 Coordinate boring machine, coordinate grinder, coordinate EDM spindle wear and tear caused by the up and down movement of the spindle sleeve, a direct impact on the type of machine tool life and quality improvement. Sleeves cause wear and tear of the main reasons are: 1. Sleeve in the box hole is often in the vertical installation position, the gap is small (only 3 ~ 5μm), poor storage conditions of oil; the same time, the sleeve movement in half Dry Mount