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在1981年9月的第四届EMO展览会上,展出了英国的一种新产品——用于机床主轴的角面接触滚珠轴承。该轴承不仅能调整预加负荷来适应各种工况,而且还确保可靠性和可预测性。目前,机床(如计算机数控车床、加工中心和铣床)的主轴转速已达4000转/分,而且还在继续提高,预计不久将可高达6000转/分。此外,某些机械加工工艺,还要求主轴有低转速。可见,随着机械加工的发展,主轴的速度范围也在扩大。在频繁改变主轴转速和回转方向,陡然加、减
At the 4th EMO Exhibition in September 1981, a new British product, the Angular Contact Ball Bearings for machine tool spindles, was on display. The bearings can not only adjust the pre-load to adapt to a variety of conditions, but also ensure reliability and predictability. At present, the spindle speed of machine tools (such as CNC lathes, machining centers and milling machines) has reached 4,000 rpm, and continues to increase, which is expected to reach as high as 6,000 rpm in the near future. In addition, some machining processes, but also requires the spindle speed. Visible, with the development of machining, the spindle speed range is also expanding. In the frequent changes in spindle speed and direction of rotation, abrupt increase and decrease