航空学报 > 2015, Vol. 36 Issue (5): 1684-1694   doi: 10.7527/S1000-6893.2014.0182

高缠绕叶轮流道4+1轴高效分段开槽方法

韩飞燕1, 张定华1, 吴宝海1, 罗明1, 张晓东1,2   

  1. 1. 西北工业大学 现代设计与集成制造技术教育部重点实验室, 西安 710072;
    2. 西安航空动力控制科技有限公司, 西安 710077
  • 收稿日期:2014-06-27 修回日期:2014-08-08 出版日期:2015-05-15 发布日期:2014-08-25
  • 通讯作者: 吴宝海Tel.: 029-88493232-411 E-mail: wubaohai@nwpu.edu.cn E-mail:wubaohai@nwpu.edu.cn
  • 作者简介:韩飞燕 女, 博士研究生。主要研究方向: 复杂曲面的计算机辅助几何设计及多坐标数控加工理论。 E-mail: hanfeiyan@126.com;张定华 男, 博士, 教授, 博士生导师。主要研究方向: 高速切削工艺、多坐标数控加工理论、叶片叶盘类零件的高效精密数控加工及无损检测。 Tel.: 029-88493009 E-mail: dhzhang@nwpu.edu.cn;吴宝海 男,博士, 副教授, 硕士生导师。主要研究方向: 自由曲面多轴加工、智能加工。 Tel.: 029-88493232-411 E-mail: wubaohai@nwpu.edu.cn;罗明 男, 博士, 助理研究员。主要研究方向: 复杂曲面的多坐标数控加工理论和多轴数控加工过程动力学优化。 E-mail: luoming@nwpu.edu.cn
  • 基金资助:

    国家科技重大专项(2013ZX04011031); 高等学校学科创新引智计划(B13044); 西北工业大学基础研究基金(JCY20130121)

High-efficiency section-by-section slotting method for 4+1-axis NC machining of high-wrap impeller channel

HAN Feiyan1, ZHANG Dinghua1, WU Baohai1, LUO Ming1, ZHANG Xiaodong1,2   

  1. 1. The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China;
    2. AVIC Xi'an Aero-engine (Group) Ltd., Xi'an 710077, China
  • Received:2014-06-27 Revised:2014-08-08 Online:2015-05-15 Published:2014-08-25
  • Supported by:

    National Science and Technology Major Project (2013ZX04011031); "111" Project (B13044); Basic Research Fund of Northwestern Polytechnical University(JCY20130121)

摘要:

高缠绕叶轮流道的高效粗加工是提高整个叶轮加工效率和缩短生产周期的关键。针对高缠绕叶轮流道的粗加工,提出了一种4+1轴高效分段开槽方法。首先,给出了分段开槽加工方法的基本概念,并分析了高缠绕叶轮流道加工特点;然后,结合机床结构特征,给出了五轴机床在主轴摆角固定为常值时切削点处单点最大刀具尺寸的计算方法;基于各切削点加工特征参数的分析,采用聚类算法进行了叶轮流道加工分段区域的划分;最后,确定了各分段区域的可加工刀具尺寸和4+1形式的刀轴矢量。算例分析表明,提出的4+1轴分段开槽方法得到的开槽轨迹旋转轴变化均匀,材料去除量较传统开槽方法增加了32.5%,改善了切削过程稳定性,提高了叶轮的粗加工效率。

关键词: 叶轮, 4+1轴加工, 刀轴矢量, 最大可加工刀具, 分段开槽

Abstract:

High-efficiency rough machining method for the high-wrap impeller channel is the key path to enhance the whole impeller machining efficiency and shorten the production cycle. Aiming at the rough machining of high-wrap impeller channel, a high-efficiency slotting method for 4+1-axis section-by-section NC machining of high-wrap impeller channel is proposed in this paper. Firstly, the basic concept of the method is discussed from the machining principle and the five-axis machining features of the high-wrap impeller are analyzed. Secondly, the largest available tool of each cutting point is determined according to the structural features of the machine. The division of the high-wrap impeller channel machining region is made based on the analysis of the processing characteristics of each cutting point using the clustering algorithm. Finally, the largest available tool and the tool orientation in form of 4+1-axis of each subsection are calculated. Simulation results demonstrate that the proposed method obtains linearly changed rotational coordinates along the slotting path, material removal volume increased by 32.5% than the traditional slotting method, the impeller slotting machining stability and efficiency are obviously improved.

Key words: impeller, 4+1-axis machining, tool orientation, the largest available tool, section-by-section slotting

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