一种涡轮盘榫槽的组合加工刀具设计研究  

Design and research of a combination machining tool for turbine disc mortise groove

作　　者：陈汉阳 唐清春[1] 杨宇航 李晓宇 乔鹏 周乐安 CHEN Hanyang;TANG Qingchun;YANG Yuhang;LI Xiaoyu;QIAO Peng;ZHOU Lean(School of Mechanical and Automotive Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China;Deyang Jiechuang Technology Co.,Ltd.,Deyang 618000,China)

机构地区：[1]广西科技大学机械与汽车工程学院,柳州545006 [2]德阳杰创科技有限公司,德阳618000

出　　处：《现代制造工程》2024年第4期109-122,共14页Modern Manufacturing Engineering

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

摘　　要：汽轮机涡轮盘连接叶片的位置通常采用榫槽结构。针对小型燕尾型榫槽,目前常采用一种成型刀具一次加工成型,导致被加工零件精度低、表面粗糙度差且刀具成本高。为解决目前制造工艺的局限性,提出了一种组合刀具设计思路。首先,根据燕尾槽型榫槽的结构特点,设计出4把刀的刀具型线和尺寸参数,通过UG等建模软件建立模型,利用ANSYS软件进行有限元分析;然后,制定组合刀具的制造工艺方案,通过NUMROTO刀具编程软件进行路径规划和程序编制;最后在SAACKE五轴工具磨床上磨削加工出合格的组合刀具。通过仿真及实际切削试验验证了该方案切实可行,相较于传统加工方法,有着加工精度高、表面粗糙度低、切削热低且成本低等优点。The position of the turbine disc connecting blade of the steam turbine is usually a mortise groove structure.For small dovetail type mortise groove,a molding tool is often used for one-time processing,which leads to low precision of machined parts,poor surface roughness and high tool cost.In order to solve the limitation of the present manufacturing process,a design idea of combined cutting tools was proposed.Firstly,according to the structural characteristics of dovetail type mortise groove,the tool shape line and size parameters of four knives were designed.The model was built by UG modeling software,and the finite element analysis was carried out by ANSYS software.Then the manufacturing process of the combination tool was developed,and the path planning and programming were carried out by NUMROTO tool programming software.Finally,the qualified combined tool was grinded on the SAACKE five-axis tool grinder.Through simulation and practical verification,this scheme is feasible.Compared with traditional machining methods,it has the advantages of high machining accuracy,low surface roughness,low cutting heat and low cost.

关 键 词：榫槽 成型刀具 型线 磨削 五轴磨床 

分 类 号：TG723[金属学及工艺—刀具与模具]