基于弧面凸轮的高精度4位置定位装置设计  

Study on a High Precision and Four Position Rotation Mechanism

作　　者：黄帅 杨微 吕向飞[2] HUANG Shuai;YANG Wei;LV Xiang-fei(Department of Mechanical Engineering,Jiujiang Vocational and Technical College, Jiujiang Jiangxi 332007,China;The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044,China)

机构地区：[1]九江职业技术学院机械工程系,江西九江332007 [2]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《组合机床与自动化加工技术》2019年第10期132-135,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：江西省教育厅重点项目(GJJ171245)

摘　　要：针对寻北仪应用领域中需要角度定位装置的问题,基于精密弧面分度凸轮技术,设计了一种四位置定位装置,以满足寻北仪使用要求。该装置采用步进电机作为动力源,通过蜗轮蜗杆传动系统驱动带偏心轴套的精密弧面分度凸轮实现转位和定位。依靠偏心轴套的调整使分度盘上两相邻精密滚针轴承与弧面分度凸轮左右槽面预压,实现零间隙分度。实验结果表明,该装置的重复定位精度优于14″,最大分度误差优于32″,设计的4位置定位装置为寻北仪产品提供了一种经济,有效的应用方案,对降低寻北仪的应用成本具有重要意义。Aiming at the need of Angle positioning device in the application field of north seeker, the paper proposes a four-position positioning device based on precision cams technology to meet the requirements of north finder. The device uses a stepping motor as the power source and drives the precision cams with eccentric shaft sleeve through the worm drive system to realize the transpotation and positioning. By means of the adjustment of eccentric shaft sleeve, the two adjacent precision needle roller bearings on the indexing disk the left and right groove surface of the camber indexing CAM are prepressed to achieve zero gap indexing. The experimental results show that the repeated positioning accuracy of the device is better than fourteen seconds, and the maximum dividing error is better than thirty two seconds. The design of four positioning device provides an economic and effective application solutions for north seeker, and is of great significance to reduce the application cost of north seeker.

关 键 词：定位机构 精密弧面分度凸轮 分度误差 重复定位精度 

分 类 号：TH122[机械工程—机械设计及理论] TG65[金属学及工艺—金属切削加工及机床]