节点文献

通过轴向力监测预报微钻头折断的研究

Prediction of micro drill break through thrust monitoring

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 杨兆军杨永海贾庆祥王伟国

【Author】 YANG Zhao-jun, YANG Yong-hai, JIA Qing-xiang,WANG Wei-guo(College of Mechanical Science and Engineering,Jilin University, Changchun 130025,China)

【机构】 吉林大学机械科学与工程学院吉林大学机械科学与工程学院 吉林长春130025吉林长春130025吉林长春130025

【摘要】 对以轴向钻削力为监测对象的微孔钻削在线监测进行了研究。以50支直径为0.4mm的高速钢麻花钻为样本,在数控高速精密微孔钻床上,对钻削45#碳素钢时微钻头折断的轴向钻削力极限值进行了检测。经参数估计和统计检验,得到轴向钻削力极限值服从对数正态分布的结论,并建立了基于可靠性的轴向钻削力监测阈值的确定方法。在此基础上选取不同可靠度水平进行了在线监测实验,与普通钻削比较,当选取可靠度水平为0.999时,在钻头利用率相同的情况下,10支钻头的折断率由30%下降到0,为避免发生微钻头折断这一长期困扰微孔加工的技术问题提供了一种良好的工艺方法。

【Abstract】 With 50 HSS twist drills of 0.4 mm in diameter used as samples on a CNC high speed precise drilling machine, limit thrust values of micro drill breaks were examined while No.45 carbon steel was drilled. It is concluded from parameter evaluation and statistics that the limit thrust values obey the logarithm normal distribution law. The way of monitoring the threshold of thrust was also developed using the reliability theory. Experimental on-line monitoring was run at different reliable levels. When the reliable level selected was 0.999 and the drill utilization ratio was the same as that of in ordinary drills, the drill break ratio of 10 drills decreased from 30% to 0.

【关键词】 微钻头轴向钻削力在线监测
【Key words】 micro drilldrilling thruston-line monitoring
【基金】 吉林省自然科学基金资助项目(No.20010574)
  • 【文献出处】 光学精密工程 ,Optics and Precision Engineering , 编辑部邮箱 ,2003年05期
  • 【分类号】TG52
  • 【被引频次】15
  • 【下载频次】150
节点文献中: 

本文链接的文献网络图示:

本文的引文网络