滚轮轴线空间夹角检测方法探讨  

Detecting Measures of axes position in rolling drive

作　　者：王国民[1] 姚正秋[1] 李国平[1] 马礼胜[1] 王建涛[2] 

机构地区：[1]中国科学院国家天文台南京天文光学技术研究所 [2]中国科学技术大学工程科学学院,安徽合肥230026

出　　处：《机械传动》2005年第5期29-31,共3页Journal of Mechanical Transmission

摘　　要：滚动摩擦传动中,主、从动轮旋转轴线在空间的理想位置是平行的。但由于安装等原因旋转轴线之间存在夹角。夹角的存在影响传动精度。本文针对这一问题,提出了适用于不同场合的三种检测方法:光学检测法;轴向位移检测法和直接调整法。这些方法经过实验证明效果很好。前两种方法能够保证主、从动轮的扭转夹角控制在30″以内。摩擦传动试验装置采用光学检测法调整后,长时间平稳运行的低速可达0.2″/s,运动位置精度RMS值为0.01″左右。30分钟内低速可达0.05″/s,位置精度RMS值为0.009″左右。本文提出的调整方法虽然针对滚动摩擦传动的,但对其他的精密机械和精密仪器的调整也有一定的参考价值。The ideal position of axes of roll and disk is parallel to each other in rolling drive.But,in fact,there is a skew angle between axes of roller and disk due to the mounting errors.The skew angle will infect the drive precision.For this reason,three detecting methods are proposed in this paper.They are optical-mechanical method,displacement detecting method and direct adjustment method.All these methods are applied in the experiment and the results are very well.With the help of first two methods,the skew angle between roller and disk axes is controlled under 30 arcseconds.After applying the first method,experiments show that the friction drive can achieve high precision in the ultra slow speed.The lowest long-steady velocity of the experiment drive system is 0.2″/s with corresponding precision 0.01 arcsend(RMS),and during 30 minutes the lowest steady velocity is 0.05″/s with corresponding precision 0.009 arcsend(RMS).All these methods given in this paper are useful for other drive system and precision mechanics.

关 键 词：摩擦传动 检测 调整 天文望远镜 传动精度 

分 类 号：TH132.21[机械工程—机械制造及自动化]