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1 一般的螺旋装置在机械装置中,螺旋传动是一个很重要的机构,螺旋装置有各种形式,因而被广泛采用。其中滑动螺旋结构简单,加工方便,但采用这种传动机构时,由于内、外螺纹滑动摩擦而产生的阻力大,因而传动效率低。为弥补这一缺点,把刚体之间的滑动改变成滚动的滚珠螺旋机构,为防止刚体接触,在
1 General spiral device In the mechanical device, the spiral transmission is a very important organization, the spiral device has the various forms, therefore has been widely used. Among them, the sliding spiral structure is simple and the processing is convenient. However, when the transmission mechanism is adopted, the drag caused by the sliding friction between the inner and the outer threads is large, and therefore the transmission efficiency is low. To make up for this shortcoming, the sliding between the rigid body into a rolling ball screw mechanism, in order to prevent rigid body contact, in