基于振动信号过程特征的批量钻削工序质量检测  

New Approach to Inspection of Batch Drilling Quality Based on the Vibration Signal Mapping Model

作　　者：周友行[1] 张建勋[1] 董银松[1] 张海华[1] 

机构地区：[1]湘潭大学机械工程学院,湘潭411105

出　　处：《机械工程学报》2011年第7期171-177,共7页Journal of Mechanical Engineering

基　　金：湖南省高校创新平台开放基金(10K063);国家自然科学基金(50975243);教育部留学回国人员科研启动基金(2009-1590)资助项目

摘　　要：为实现批量钻削质量的快速检测分析,采用振动传感器监控钻削过程,提出一种基于振动信号处理的批量钻削质量监测分析方法。基于钻刃与工件接触位置变化状况,在钻削过程中提炼出与钻削加工质量密切相关的三个阶段:引钻、钻孔和出钻三阶段。采用正交包络法求解振动信号的瞬时频率及瞬时幅值,定位这三个阶段初始时刻的瞬态时间点。利用这些瞬态时间点对振动信号进行分割,获得与每一个钻削过程中引钻、钻孔和出钻三阶段对应的钻削过程振动信号数据。采用主成分分析方法,综合此三个阶段内振动信号的统计特征对批量钻孔质量分布进行分析。计算和分析结果证明,可在3%的误差内提取瞬态特征点,分析和评估批量钻削质量准确度高。To inspect the quality of batch drilling quickly,a new approach is introduced based on the analysis of the vibration sensors＇ signals.From the whole drilling process,three stages closely related to the drilling quality is extracted based on the contact conditions between drilling blades and workpiece,these stages are called the stage of guiding drilling,the stage of drilling and the stage of ending drilling.The instantaneous amplitude and instantaneous frequency of the vibration sensors＇ signals are solved by using the orthogonal envelope method,and the instantaneous mutation points of the mentioned three stages can be located,then the signals of the mentioned three stages are extracted from the vibration sensors＇ signals.Utilizing the principal component analysis to analyze the statistical attribute of three stage signals,the batch drilling quality can be classified.The results show that the instantaneous points can be extracted under the error of three Percent,and the batch drilling quality can be evaluated accurately.

关 键 词：钻削质量 振动信号 瞬时特征 映射模型 主成分分析方法 

分 类 号：TH165.4[机械工程—机械制造及自动化]