基于噪声信号的难加工表面损伤在线监测  

The real-time monitoring for surface damage in hard machining base on acoustic emission

作　　者：黄信[1,2] 陶华[1,3] 李茂伟[1] 

机构地区：[1]西北工业大学中法联合虚拟设计与制造研究室,西安710072 [2]上海航天技术研究院第802研究所,上海200090 [3]西北工业大学现代设计与集成制造教育部重点实验室,西安710072

出　　处：《机械设计与制造》2010年第6期205-206,共2页Machinery Design & Manufacture

摘　　要：提高难加工材料的加工效率在机械加工中有着巨大的经济价值,但是由于一些加工表面损伤的存在如白层,难加工材料的加工效率仍处于一个很低的状态。加工材料表面的白层只能在加工之后才能被发现。这对刀具磨损,加工质量等有着巨大的危害。因此在线监测难加工表面损伤具有巨大的经济意义。建立一个基于实时切削噪声信号的在线监测系统对白层,表面质量和刀具磨损进行监测分析。实验表明噪声信号均方根值,频率与白层有着极大的相关性。Hard machining is a competitive finishing process with substantial benefits in manufacturing precision mechanical components.But hard machining application have been remaining slow due to the existence of surface damage such as white layer.The white layer could be found only after machining.It has a great danger to tool wear and corresponding surface finish.Therefore,real-time monitoring of white layer formation during hard machining has significant economical.In this study,a real-time acoustic emission（AE）monitoring system was developed to investigate white layer and corresponding surface finish and tool ware.The experimental results show that AERMS,frequency have good correlation with white layer.

关 键 词：难加工 白层 在线监测 噪声信号 均方根 

分 类 号：TH16[机械工程—机械制造及自动化] TB533.1[理学—物理]