闭式整体叶盘五轴数控加工技术的研究

发布时间：2018-01-08 11:39

本文关键词：闭式整体叶盘五轴数控加工技术的研究　出处：《西京学院》2016年硕士论文　论文类型：学位论文

【摘要】：闭式整体叶盘作为航空发动机的关键零件,其结构复杂,加工精度要求高,通常使用难切削材料,如钛合金或高温合金等,加工难度大,在实际生产过程中通常采用多轴数控加工。为了使闭式整体叶盘的生产水平得以提高,本文结合企业的具体生产情况,以WZ-122A型航空发动机压气机二级静子(一种闭式整体叶盘)为研究对象,对这类零件的五轴联动数控加工技术展开研究。本文根据闭式叶盘的结构特点,完成闭式叶盘参数化建模。结合五轴联动数控加工特点,研究了闭式叶盘的加工工艺,其中包括:闭式叶盘的加工难点、工艺内容、毛坯选择、切削参数选择、刀具选择等。根据闭式叶盘结构特点,确定闭式叶盘数控加工的刀轴矢量,基于UG/CAM平台,对闭式叶盘整个加工过程进行了编制,得到了刀位轨迹文件。针对实际加工使用的Hermle C22U五轴数控机床,后置处理文件采用UG/Post Builder创建,并将UG所得的刀位轨迹文件转化为数控程序。闭式叶盘数控加工过程的仿真利用Vericut软件完成,本文规划刀具轨迹的可行性得以验证。
[Abstract]:As the key part of aero-engine, the closed integral impeller is difficult to process because of its complex structure and high machining precision. It is usually difficult to be machined by hard cutting materials, such as titanium alloy or superalloy. In the actual production process, the multi-axis NC machining is usually used. In order to improve the production level of the closed integral disk, this paper combines the specific production situation of the enterprise. In this paper, the two-stage stator of WZ-122A aeroengine compressor (a kind of closed integral impeller) is taken as the research object. According to the structural characteristics of the closed blade disk, the parametric modeling of the closed blade disk is completed, and the characteristics of the five-axis linkage NC machining are combined with the research on the five-axis linkage NC machining technology of this kind of parts. The machining technology of the closed leaf disk is studied, including the machining difficulty, the process content, the blank selection, the cutting parameter selection, the tool selection and so on, according to the structure characteristic of the closed blade disk. Based on the UG/CAM platform, the whole machining process of the closed blade disk is programmed based on the tool axis vector of the NC machining of the closed blade disk. For the Hermle C22U five-axis NC machine tool used in practical machining, the post-processing file is created by UG/Post Builder. The NC machining process of closed blade disk is simulated by Vericut software, and the feasibility of tool path planning in this paper is verified.
【学位授予单位】：西京学院
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V263

【参考文献】