三坐标测量机测头系统的误差分析与修正  

Error Analysis and Modification on the Probe System of Coordinate Measuring Machine

作　　者：杜翠翠[1] 徐强[1] 冯旭刚[1] 章家岩[1] 

机构地区：[1]安徽工业大学电气与信息工程学院,安徽马鞍山243032

出　　处：《常州工学院学报》2016年第3期33-37,共5页Journal of Changzhou Institute of Technology

基　　金：安徽省教育厅自然科学重点项目(KJ2015A058)

摘　　要：测头是三坐标测量机的关键部分,其动态性能对测量机最终测量结果有直接的影响。为了提高三坐标测量机测头的测量精度,以触发式测头系统为主,研究了测头系统动态误差的构成,分析了测头预行程误差来源及影响因素,提出了将测头直径动态标定与微平面补偿法相结合的方法对测头直径进行补偿。通过对凹轮轮廓进行测量,并在逆向工程软件中对测头直径补偿前后进行对比。结果表明,该方法对测量机测头直径有较好的补偿效果,具有一定的应用价值。As probe is the key component of coordinate measuring machine （CMM） ,its dynamic performance has direct influence on the final measurements. In order to enhance the accuracy of CMM, composition of the probe dynamic error system was studied with focus on introducing the touch trigger probe. Probe pre-travel error sources and influencing factors were analyzed. The method combining dynamic calibration of probe radius and micro plane compensation was put forward to make compensation for the probe radius. After measuring the outline of a concave wheel and comparing probe radius before and after the compensation in reverse engineering software, the results showed that the method made better compensation for the probe radius and was worth more applications.

关 键 词：三坐标测量机 测头系统 预行程误差 测头直径 

分 类 号：TH-9[机械工程]