东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (10): 1465-1468.DOI: -

• 机械工程 • 上一篇    下一篇

数控铣削加工中心加工精度分布规律

范智广,巩亚东,王超,吕威   

  1. (东北大学机械工程与自动化学院,辽宁沈阳110819)
  • 收稿日期:2013-04-23 修回日期:2013-04-23 出版日期:2013-10-15 发布日期:2013-05-24
  • 通讯作者: 范智广
  • 作者简介:范智广(1974-),女,河北张家口人,东北大学博士研究生;巩亚东(1958-),男,辽宁本溪人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51075064).

Machining Accuracy Distribution Regularities of CNC Milling Machining Center

FAN Zhiguang, GONG Yadong, WANG Chao, LYU Wei   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2013-04-23 Revised:2013-04-23 Online:2013-10-15 Published:2013-05-24
  • Contact: FAN Zhiguang
  • About author:-
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摘要: 以正交试验设计理论为依据,结合数控加工技术的特点,给出了数控铣削加工中心加工精度分布规律的正交试验设计方案,进行变直径凸轮铣削加工试验.根据试验数据用Matlab对凸轮的线轮廓进行模拟,验证了数控铣削加工的线轮廓度误差符合正态分布规律;用极差分析法对加工误差较大的两处轮廓R2和R5进行线轮廓度误差分析,研究加工参数对其影响的显著性差异.在设计同一零件的不同弧段的轮廓度公差时所选定的值应该是不同的.

关键词: 正交试验, 数控铣削加工中心, 线轮廓度, Matlab, 正态分布

Abstract: To test the machining accuracy distribution of CNC milling machining center, an orthogonal experimental scheme was presented on the basis of the orthogonal test design theory and the characteristics of CNC machining technology. The scheme was used to machine variable diameter cams and then the line profiles of the cams were simulated using Matlab. The results showed that the line profile accuracy has a normal distribution. The relatively larger line profile errors, R2 and R5, were analyzed using the extreme difference analysis method in order to study the influence of machining parameters. The profile tolerance value should be different for every arc of the same part.

Key words: orthogonal test, CNC milling machining center, line profile, Matlab, normal distribution

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