C650车床是很多工厂使用的一种中型设备,原主轴瓦是锡青铜动压轴承,修理、刮研十分费力,修后精度下降快。为此我们对其进行了改造。具体方法如下:1)利用双列向心短柱滚子轴承代替原轴瓦。这样结构简单,不需要大批换件;2)在齿轮箱内一个活塞油泵和一个偏心轮,供主轴润滑用;3)另? C650 lathe is a medium-sized equipment used in many factories, the main bearing is tin bronze dynamic pressure bearings, repair, scraping is very laborious, the accuracy of repair decreased rapidly. To this end we have transformed it. Specific methods are as follows: 1) The use of double row to the heart short cylindrical roller bearings instead of the original bearing. This structure is simple, do not need a large number of replacement parts; 2) a piston in the gearbox pump and an eccentric wheel for spindle lubrication; 3)