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微细铣削振动信号非线性特征的试验研究
  • ISSN号：1000-1093
  • 期刊名称：兵工学报
  • 时间：2010.1.1
  • 页码：84-87
  • 分类：TG501[金属学及工艺—金属切削加工及机床]
  • 作者机构：[1]北京理工大学先进加工技术国防重点学科实验室,北京100081
  • 相关基金：国家自然科学基金（50935001,50875026）;“十一五”总装备部预先研究项目
  • 相关项目：微细切削刀具设计理论与微铣钻刀具制造技术基础
作者： 刘志兵|王西彬|
关键词： 机械制造工艺与设备, 微细铣削, 非线性, 失稳, 振动信号, 时域参数, 频域参数, technology and equipment for mechanical manufacturing, micro-end-milling, non-linear, un-stabilized, vibration signal, time-domain parameter, frequency-domain parameter
中文摘要：

微细铣削具有很强的三维微细加工能力,是目前微细切削最主要的一种应用方式。与常规尺度铣削相比,微细铣削的工艺效果与工艺参数之间更容易失去确定性关系而表现出非线性特征。为此,利用压电式高阻抗三向加速度计分别采集了获得正常铣削表面和宏观振纹表面时的微细铣削振动信号。应用均方根值（RMS）和峭度K等时域特征参数,以及重心频率（FC）、均方根频率（RMSF）和频率标准差（RVF）等频域特征参数描述了振动信号能量、差异程度、功率谱主频带、能量分散程度的变化历程。研究表明：失稳是微细铣削过程中非线性现象的主要原因;振动信号主频带对于铣刀进给运动方向状态的变化最为敏感,其次是铣削深度方向,最后是铣刀安装轴向方向。

英文摘要：

Micro-end-milling is a dominant method of micro-cutting because of its three dimensional micro-machining ability.Compared to conventional macro-scale milling,the relationship between machining effect and machining parameter inclines to more un-corresponding which can be described as non-linear in micro scale end-milling.Based on this,the vibration signals,under which normal surface and surface with macroscopic ripple are obtained,were sampled with high impedance tri-axial accelerometer respectively.The fluctuation processes of vibration signal characteristics such as energy,deviation,power spectrum frequency band and energy distribution in micro-end-milling were described by parameters such as root mean square（RMS） and kurtosis K in time-domain,spectral frequency center（FC）,root mean square frequency（RMSF） and root variance frequency（RVF） in frequency-domain.The investigated results show that non-linear phenomenon in micro-end-milling process is mainly caused by the unstability;the main frequency band is most sensitive to status change of the feed direction of milling cutter,the direction of milling depth is second and the axial direction is the most inertia.

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期刊信息
  • 《兵工学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学技术协会
  • 主办单位:中国兵工学会
  • 主编：许毅达
  • 地址：北京2431信箱
  • 邮编：100089
  • 邮箱：acta@cn-bgxh.cn
  • 电话：010-68962718 68963060
  • 国际标准刊号：ISSN：1000-1093
  • 国内统一刊号：ISSN：11-2176/TJ
  • 邮发代号:82-144
  • 获奖情况:
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:15352