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主轴油的性能要求

2024-07-11

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精密切削机床的加工精密度与导轨组件的精密、刀具水平有关,且很大程度上决定于主轴的运转精度。主轴与主轴承的间隙很小,一般为0.002-0.060mm,转速在1000-3000r/min之间,用于主轴的轴承都为滑动轴承。其供油方式有的是循环式,有的是油浴式。

主轴油的性能要求如下:

(1)合适的黏度和好的黏温性能

主轴与轴承的间隙很小,油的黏度要很低才能进到间隙中建立油膜起润滑和抗磨作用,主轴油运转中油温要上升,油在油温变化时黏度变化要尽量小。

(2)良好的润滑性和一定的抗磨性

低黏度油的油膜薄,小间隙的部件高速转动时油膜易破裂,因而主轴油应保持好的油膜,即要有良好的润滑性和一定的抗磨性,以降低温升。

(3)抗氧、防锈、抗泡性这是一般润滑油的通用性要求。

(来源:网络)

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