期刊文献+

基于接触区域的球头铣刀颤振稳定域预报方法研究 被引量:8

Research on Prediction Method of Stability Lobe Diagram for Ball-end Mill Based on Engagement
原文传递
导出
摘要 运用半解析法精准搭建出球头铣刀与工件接触区域边界的投影方程,对铣削系统时滞动力学方程进行全离散时域数值求解,在单齿周期内球头铣刀视为圆弧切削的基础上,通过接触区域投影和切削刃投影不同时刻的关系,确定出数值求解方程中所需要的瞬时参与切削刀刃的实际切削部位,利用Floquet定理获得了不同转速下的临界切削深度,构建出了高精度的球头铣刀颤振稳定域叶瓣图,并在三轴数控机床上进行了试验验证,试验结果与预测结果相符合,表明了该方法的正确性。同时,与传统方法相比,这里所提供的方法拥有较高的预测精度,最后分析了不同参数对颤振稳定域的影响规律,为叶瓣图指导实际加工奠定了基础。 The equations for the boundaries of ball-end mill-workpiece engagement(BWE)are precisely established by a semi-analytical method at first.The differential dynamic equation derived from the ideal 2-Dof milling system is solved by the complete discrete method.Based on the cutter within a tooth passing period considered as arc path cutting,the instantaneous cutting positions required in the numerical solution are identified by the relationship of cutter edge and BWE.The stability lobe diagram is constructed by Floquet theory,which is subsequently verified on a three-axis NC machine tool.The experimental results are in good agreement with the predicted results,indicating the validity of this method.In contrast to traditional method,the proposed method shows higher prediction precision.The influence laws of different parameters on stability are analyzed at last,which can give a help for the actual machining.
作者 代月帮 魏兆成 李宏坤 张孟哲 DAI Yuebang;WEI Zhaocheng;LI Hongkun;ZHANG Mengzhe(School of Mechanical Engineering,Dalian University of Technology,Dalian 116024)
出处 《机械工程学报》 EI CAS CSCD 北大核心 2019年第1期52-61,共10页 Journal of Mechanical Engineering
基金 国家自然科学基金资助项目(51575075)
关键词 颤振 球头铣刀 接触区域 稳定域叶瓣图 chatter ball-end mill engagement stability lobe diagram
  • 相关文献

参考文献3

二级参考文献21

共引文献64

同被引文献20

引证文献8

二级引证文献23

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部