基于球面磨削纹理的球度误差原位判别评估方法  

Sphericity Error Estimation Method Based on Spherical Grinding Marks

作　　者：单俊[1] 许黎明[1] 胡德金[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200030

出　　处：《上海交通大学学报》2016年第5期654-659,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(51075273)

摘　　要：对高硬度球面磨床中存在的几何误差进行了数学建模并分析其对球度误差的影响规律.建立了几何误差条件下磨粒运动轨迹的数学模型,定义了磨纹交错度这一特征量并用于评定机床几何误差的大小,提出通过视觉检测球体表面磨纹的交错度,进而判断球体球度的新方法.该方法可以在加工中对球体的球度误差进行原位评估,对球体球度的在线检测和误差补偿具有重要意义.A mathematical model was established and analysis of geometric deviation was conducted based on spherical grinder to study the influence of the grinder on sphericity error.The grain trajectory considering geometric deviation was studied and the relevant model was built.The grossed ratio of grinding marks was defined as a statistic feature to evaluate the geometric deviation.A novel vision detection-based method was proposed to estimate the sphericity error based on the crossed ratio of grinding marks.The proposed method enables in-situ evaluation of sphericity error and is meaningful for further in-situ sphericity error compensation.

关 键 词：球面磨削 球度误差 磨削纹理 几何误差 

分 类 号：TH161.1[机械工程—机械制造及自动化]