加入隔离球的滚动螺旋传动效率分析

Spacer Ball Screw Driver efficenty Analnysis

滚动螺旋传动的工作原理是在螺杆和螺母的螺纹滚道间置有钢球，当螺母或螺杆转动时，钢球沿螺纹滚道滚动，产生滚动摩擦（伴有滑动摩擦）．通常钢球尺寸相同，但如果采用一些尺寸稍小的钢滚──隔离球，从而既保证了传动精度又减少滑动摩擦，在足够的予紧条件下不使效率下降．

Ball screws are essentially a power screw with a train of ball bearing riding between the screw and nut in recirculating track. When steel ball is rolling, generite rolling friction at same time stipping friction. Deneral steel ball is of same size. If used of some ball that is smaller spacer ball, slipping is reduced but efficiency is not reduced at pre-force operation.