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本文介绍一种新型传动—滚珠蜗杆传动的结构及其设计中若干问题,本文着重解决这种传动的关键—滚珠返回器的结构型式,确定主要参数承载能力的计算。同阿基米德蜗杆一样,滚珠蜗杆传动也可以看成是滚珠螺旋传动的一种变态,蜗轮是螺母的一部分,蜗杆是螺杆。当蜗杆以等角速度ω_1转动时,则被动的蜗轮以相应的角速度ω_2转动。滚珠蜗杆传动由蜗杆1,蜗轮2,滚珠3,保持套4和滚珠返回装置(图1未示出)构成。如图1所示。滚珠蜗杆传动既保持了原来蜗杆传动的优点又具备了滚动摩擦的优点,而且不用有色金属制造蜗轮,故滚珠蜗杆传动研制成功,能节省动力和有色金属,对国民经济有一定的意义。
This paper introduces a new type of transmission - the structure of the ball and worm drive and some problems in its design. This paper focuses on the key of this kind of transmission - the structure of the ball return type and the calculation of the carrying capacity of the main parameters. As with Archimedes, the worm drive can also be seen as a metamorphosis of the ball screw drive, which is part of the nut and the worm screw. When the worm rotates at the equal angular velocity ω_1, the passive worm wheel rotates at the corresponding angular velocity ω_2. The ball and worm drive consists of a worm 1, a worm gear 2, a ball 3, a retaining sleeve 4 and a ball return device (not shown in FIG. 1). As shown in Figure 1. Ball and worm drive not only maintains the advantages of the original worm drive but also has the advantages of rolling friction, and without the manufacture of non-ferrous metal worm gear, so the successful development of ball screw drive, can save power and non-ferrous metals, the national economy has some significance.