2自由度砂轮廓面修形机械手及其误差补偿  

Two-degree-of-freedom Grinding Wheel Profile Modification Manipulator and Its Error Compensation

作　　者：杨斌 黄小娣 黄永程 Yang Bin;Huang Xiaodi;Huang Yongcheng(Department of Industrial Automation,Guangdong Polytechnic College,Zhaoqing 526100,China)

机构地区：[1]广东理工学院工业自动化系,广东肇庆526100

出　　处：《机械传动》2021年第10期72-76,共5页Journal of Mechanical Transmission

基　　金：2017年广东普通高校特色创新类项目(自然科学)(2017KTSCX203)。

摘　　要：沟槽砂轮相对于传统砂轮具有许多优势,但其砂轮轮廓的误差对加工精度存在一定的影响。因此,提出了一种用于数控磨床的砂轮廓面修形机械手,并设计了一种简单、经济的机械手对准测量与静态误差补偿方法。该机械手由水平导轨和垂直导轨两个直线导轨组成;导轨由一个高精度滚珠丝杠驱动,该滚珠丝杠与带有光学编码器反馈的直流伺服马达相连;垂直导轨上装有单点金刚石修整刀具。对准测量方法采用了一个千分表和磨床的数字读数。通过测量机械手形成的轮廓误差,对该误差补偿方法进行了实验验证。结果表明,静态误差补偿方法可将砂轮廓形的轮廓误差减少40%,降低到±10μm的范围内。Compared with traditional grinding wheels,grooved grinding wheels have many advantages,butthe error of grinding wheel profile has certain influence on machining accuracy.Therefore,a grinding wheel pro-file modification manipulator for CNC grinding machine is proposed,and a simple and economical method foralignment measurement and static error compensation of the manipulator is designed.The modification manipu-lator consists of two linear rails of the horizontal guideway and the vertical guideway.The guides are driven by ahigh-precision ball screw connected to a DC servo motor with optical encoder feedback.A single point diamonddressing tool is installed on the vertical guide rail.The alignment measurement method used a micrometer and adigital reading of the grinder.By measuring the contour error formed by the manipulator,the motion error com-pensation method is verified experimentally.The results show that the static error compensation method reducesthe profile error of the grinding wheel by 40%,to the range of ±10μm.

关 键 词：数控磨床 廓面修形 误差补偿 沟槽砂轮 砂轮廓形 

分 类 号：TG743[金属学及工艺—刀具与模具] TP241[自动化与计算机技术—检测技术与自动化装置]