叶片型面曲率属性对数控铣削加工过程的影响

王明海; 李晓鹏

叶片型面曲率属性对数控铣削加工过程的影响

沈阳航空航天大学航空制造工艺数字化国防重点学科实验室,沈阳 110136

基金项目: 中航产学研创新基金(CXY2010SH29)

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出版历程
- 收稿日期: 2012-04-27
- 刊出日期: 2013-01-28

Effect of curvature attribute of free-form surface on CNC milling process

Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University,Shenyang 110136,China

摘要

摘要: 提出了一种基于曲面曲率属性分析数控铣削加工过程的方法.该方法通过在构建的自由曲面上规划走刀轨迹,建立刀位轨迹等参数曲线,来分析等参数曲线曲率属性对加工干涉和加工带宽度的影响.同时,通过对刀位轨迹和残留高度与曲面曲率属性之间关系的研究,获得了影响数控铣削加工效率、加工精度及发生干涉的一些规律.此外,研究表明通过对刀具半径、残留高度与加工表面曲率之间的吻合关系曲线合理优化,可有效提高加工带宽度.试验结果证明该曲面曲率属性分析数控铣削加工过程的方法是有效的,加工效率可提高5%~8%.
- 自由曲面 /
- 曲率属性 /
- 数控铣削 /
- 刀具轨迹 /
- 叶片
Abstract: A method was presented to analyze the computer-numerical-control (CNC) milling process based on characteristics of the curvature of curved surface. It applied differential geometry theory to CNC milling process. This method was employed to analyze the effects of the curvature attributes of isoparametric curves on the interference and cutting width during the process through planning the cutting path on the constructed free-form surface and establishing cutting path isoparametric curve. At the same time, according to the research on the relationship among the cutting path, the scallop height and the attributes of curvature of curve, some laws affecting the machining efficiency, accuracy and interference were obtained. In addition, the research shows that the cutting width can be improved effectively by optimizing the anastomosis curve of the cutting tool radius, the scallop height and machined surface's curvature. The experimental results show the effectiveness of the method in analyzing CNC milling process based on the attributes of the curvature of curves,the machining efficiency can be increased 5%~8%.
- free-form surface /
- curvature attribute /
- computer-numerical-control (CNC) milling /
- tool path /
- blade

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参考文献(15)

[1]	李海滨,余颖婷.叶片数控加工关键技术的研究[J].机床与液压,2010,38(11):14-17. LI Haibin,YU Yingting.Research on the key technologies of blade's NC machining[J].Journal of Machine Tool and Hydraulics,2010,38(11):14-17.(in Chinese)
[2]	刘维伟,张定华,史耀耀,等.航空发动机薄壁叶片精密数控加工技术研究[J] .机械科学与技术,2004,23(3):331-334. LIU Weiwei,ZHANG Dinghua,SHI Yaoyao,et al.Study on net-shape NC machinging technology of thin-balde of aeroengine[J].Journal of Mechanical Science and Technology,2004,23(3):331-334.(in Chinese)
[3]	《透平机械现代制造技术丛书》委员会.叶片制造技术[M].北京:科学出版社,2002:8-12.
[4]	李正强,陈志同,肖俊.鼓形刀宽行刀位优化纬线分割算法[J] .北京航空航天大学学报,2007,33(6):731-735. LI Zhengqiang,CHEN Zhitong,XIAO Jun.Latitude distribution algorithm of cutter position optimization on drum-like cutter for strip-maxim ization[J].Journal of Beijing University of Aeronautics and Astronautics,2007,33(6):731-735.(in Chinese)
[5]	Ding S,Mannan M A,Poo A N,et al.Adaptive iso-planar tool path generation for machining of free-form surface[J].Computer-Aided Design,2003,35(2):141-153.
[6]	金曼,张俐,陈志同.圆环面刀具五坐标加工端点误差控制刀位优化[J].北京航空航天大学学报,2006,32(9):1225-1228. JIN Man,ZHANG Li,CHEN Zhitong.End-points error controlling method for torus tool position optimization in five-axis NC machining[J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(9):1225-1228.(in Chinese)
[7]	王瑞秋,陈五一,金曼.多点切触加工中的局部干涉分析[J].北京航空航天大学学报,2006,32(5):580-584. WANG Ruiqiu,CHEN Wuyi,JIN Man.Local interference identification of multi-point machining[J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(5):580-584.(in Chinese)
[8]	陈浪,秦大同,郑小光.基于形状特征的自由曲面建模技术[J].机械工程学报,2002,38(11):105-108. CHEN Lang,QIN Datong,ZHENG Xiaoguang.Free-form surface modeling based on shape characteristic in reverse engineering[J].Journal of Mechanical Engineering,2002,38(11):105-108.(in Chinese)
[9]	丁毅,顾培夫.实现均匀照明的自由曲面反射器[J] .光学学报,2007,27(3):540-544. DING Yi,GU Peifu.Freeform reflector for uniform illumination[J].Acta Optica Sinica,2007,27(3):540-544.(in Chinese)
[10]	Erdim H,Lazoglu I,Ozturk B.Freedrate scheduling strategies for free-form surface[J].International Journal of Machine Tools and Manufacture,2006,46(7/8):747-757.
[11]	王太勇,张志强,王涛,等.复杂参数曲面高精度刀具轨迹规划算法[J] .机械工程学报,2007,43(12):109-113. WANG Taiyong,ZHANG Zhiqiang,WANG Tao,et al.High precision tool path planning algorithm for complex parametric surface[J].Journal of Mechanical Engineering,2007,43(12):109-113.(in Chinese)
[12]	谢叻,周儒荣,阮雪榆.自由曲面自适应投影法精加工刀轨生成[J] .上海交通大学学报,2000,34(10):1382-1384. XIE Le,ZHOU Rurong,RUAN Xueyu.NC tool path generation based on adaptive projection medthod for free form surface[J].Journal of Shanghai Jiaotong University,2000,34(10):1382-1384.(in Chinese)
[13]	Krimpenis A,Fousekis A,Vosniakos G.Assessment of sculptured surface milling strategies using design of experiments[J].International Journal of Advanced Manufacture Technology,2000,25(5/6):444-453.
[14]	Rao A,Sarmar R.On local gouging in five-axis sculptured surface maching using flat-end tools[J].Computer-Aided Design,2000,32(7):409-420.
[15]	刘雄伟,张定华,王增强,等.数控加工理论与编程技术[M].2版.北京:机械工业出版社,2001:115-120.