枞树型轮槽加工刀具的设计优化与制造工艺研究  

Research on Design Optimization and Manufacturing Technologyof Fir-tree Type Wheel Slot Cutting Tool

作　　者：李晓宇 唐清春[1] 杨宇航 陈汉阳 乔鹏 周乐安 Li Xiaoyu;Tang Qingchun;Yang Yuhang;Chen Hanyang;Qiao Peng;Zhou Lean(School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou,Guangxi 545006,China;不详)

机构地区：[1]广西科技大学机械与汽车工程学院,广西壮族自治区柳州市545006 [2]德阳杰创科技有限公司

出　　处：《工具技术》2024年第12期61-69,共9页Tool Engineering

基　　金：国家自然科学基金(52165054);广西自然科学基金(2020GXNSFAA159142)。

摘　　要：针对大型汽轮机转子轮槽加工中传统拉削和线切割后再铣削存在零件成型轮廓精度低、粗糙度高、刀具寿命短的情况,提出了一种可行的多刀轮槽加工方案。利用NUMROTOplus软件对刀具进行设计,初步验证刀具芯厚、前角等参数的合理性;采用ANSYS软件建立成型铣刀的有限元模型,以半精铣刀为典型案例对切削过程中的受力和受热情况进行分析,对轮槽铣刀结构进行优化;使用NUMROTOplus软件对刀具进行精加工路径规划与仿真模拟验证;通过Saacke UWIF五轴工具磨床完成刀具的试制,对试制后的刀具进行检测及轮槽切削试验。结果表明,该方案可以提高轮槽与刀具的精度与寿命,该工艺方案切实可行。Aiming at the problems of low forming contour accuracy,high roughness and short tool life in the traditional broaching and wire cutting and then milling in the machining of large steam turbine rotor grooves,this paper proposes a feasible multi-tool wheel groove processing scheme.Firstly,the tool is designed by NUMROTOplus software,and the rationality of the parameters such as the core thickness and the rake angle of the tool is preliminarily verified.Secondly,the finite element model of the forming milling cutter is established by ANSYS software.The force and heat in the cutting process are analyzed by taking the semi-finishing milling cutter as a typical case,and the structure of the wheel groove milling cutter is optimized.Thirdly,NUMROTOplus software is used to carry out finishing path planning and simulation verification of the tool.Finally,the trial production of the tool is completed by the Saacke UWIF five-axis tool grinder,and the tool after trial production is tested and the wheel groove cutting test is carried out.The results show that the scheme can improve the accuracy and life of the wheel groove and tool,and verify that the process scheme is feasible.

关 键 词：轮槽加工 五轴磨床 虚拟仿真 成型铣刀 

分 类 号：TG702[金属学及工艺—刀具与模具] TH162.1[机械工程—机械制造及自动化]