摘要
滚珠丝杠副是数控机床的关键功能部件,返向器是提供滚珠循环的通道,滚珠进入返向器时的碰撞力会引起较大的噪声。通过分析影响滚珠丝杠副中滚珠与返向器碰撞力的因素,寻找降低该碰撞力的方法,对返向器结构进行改进,并对两种结构丝杠副进行噪声对比试验。研究表明通过减小返向器滚道与丝杠滚道切线的夹角,采用弹性模量较小的工程塑料制作返向器,可以达到降低滚珠与返向器的碰撞力,进而降低滚珠丝杠副噪声的目的。
Ball screw pair is a key functional component of digit lathes, in which the re-circulating mechanism provides a channel for steel balls rolling in screw grooves. As the driven shaft in the mechanism operates at a high rotating speed, forces caused by the impact between the steel balls and re-circulating mechanism may induce great noise. In this paper, the method to reduce the impact force is studied through analyzing the influence factor of the impact forces of the ball screw pair. Design of the re-circulating mechanism is improved by reducing the angle between the re-circulating mechanism groove and the shaft groove. Furthermore, engineering plastics are used to make the re-circulating mechanism. The noise of the two types of ball screw pairs is measured and the data is analyzed using spectrum analysis. The experimental results indicate that this method can reduce the impact noise effectively.
出处
《噪声与振动控制》
CSCD
2014年第3期215-218,共4页
Noise and Vibration Control
基金
国家自然基金资助项目(编号:51105232)
关键词
声学
噪声
高速滚珠丝杠副
返向器
控制
vibration and wave
noise
high-speed ball screw pair
re-circulating mechanism
control
