首页|业界动态|文献园地|科技期刊|文献翻译|科技论坛|会员中心|网站功能

English 旧版网站 邮箱

中检索

  首页《机械工程学报(英文版)》2008年3期目录EQUIVALENT NORMAL CURVATURE APPROACH MILLING MODEL OF MACHINING FREEFORM SURFACES

YI Xianzhong

MA Weiguo
School of Mechanical Engineering,
Yangtze University,
Jingzhou 434023, China

QI Haiying
Key Laboratory for Thermal Science and
Power Engineering of
Ministry of Education,
Tsinghua University,
Beijing 100084, China

YAN Zesheng
Tianjin Pipe (Group) Corporation Ltd.,
Tianjin 300301, China

GAO Deli
Key Laboratory for Petroleum Engineering of Ministry of Education,
China University of Petroleum,
Beijing 102249, China

 

 

EQUIVALENT NORMAL CURVATURE APPROACH MILLING MODEL OF MACHINING FREEFORM SURFACES*

 

Abstract: A new milling methodology with the equivalent normal curvature milling model machining freeform surfaces is proposed based on the normal curvature theorems on differential geometry. Moreover, a specialized whirlwind milling tool and a 5-axis CNC horizontal milling machine are introduced. This new milling model can efficiently enlarge the material removal volume at the tip of the whirlwind milling tool and improve the producing capacity. The machining strategy of this model is to regulate the orientation of the whirlwind milling tool relatively to the principal directions of the workpiece surface at the point of contact, so as to create a full match with collision avoidance between the workpiece surface and the symmetric rotational surface of the milling tool. The practical results show that this new milling model is an effective method in machining complex three- dimensional surfaces. This model has a good improvement on finishing machining time and scallop height in machining the freeform surfaces over other milling processes. Some actual examples for manufacturing the freeform surfaces with this new model are given.

Key words: Equivalent normal curvature milling model Whirlwind milling method Freeform surfaces 5-axis CNC machine Differential geometry

 


* This project is supported by China Postdoctoral Science Foundation (No. 2005037348) and Science and Technology Research Program of Hubei Province, Ministry of Education, China (No. D2006 12003). Received June 20, 2007; received in revised form November 25, 2007; accepted January 24, 2008

浏览(下载)论文全文(PDF格式)

 

Biographical notes

YI Xianzhong is a professor in Yangtze University, China. He received his PhD degree from China University of Petroleum in 2004. He earned a BS degree in mechanical engineering from Daqing Petroleum Institute, China, in 1983 and an MS degree from Southwest Petroleum University, China, in 1986. Currently his research interests include advanced manufacturing, CAD/CNC/CAE and petroleum drilling machinery.
Tel: +86-71-68060475; E-mail: yxz@yangtzeu.edu.cn, yixzhong@gmail.com

MA Weiguo is a senior engineer in Yangtze University, China. He earned his MS degree from China University of Petroleum in 1995, China. He held a BS from Jianghan Petroleum Instutite in 1983, China. His current research interests include petroleum mechanical engineering and CAD/CAM.
Tel: +86-71-68062621; E-mail: mwg-jh@vip.sina.com

QI Haiying is a professor in Tsinghua University, China. He earned his PhD degree from Aachen University of Technology in 1997, Germany. He held a BS and MS degrees in thermal engineering from Tsinghua University, China, in 1982 and in 1985, respectively. His current research interests include advanced manufacturing, thermal engineering and multiphase fluid mechanics.
Tel: +86-10-62796036; E-mail: hyqi@mail.tsinghua.edu.cn

YAN Zesheng is a senior engineer in Tianjin Pipe (Group) Corporation Ltd., China. He received his PhD degree from China University of Petroleum, in 2005. His current research interests include press-working method and metallurgical machinery.
Tel: +86-22-24801360; E-mail: yanzs@tpco.com.cn

GAO Deli is currently a professor in China University of Petroleum, and the director in Key Laboratory for Petroleum Engineering of Ministry of Education, China. He received his PhD degree from China University of Petroleum, in 1990. His current research interests include petroleum drilling machinery, oil and gas drilling engineering.
Tel: +86-10-89733281; E-mail: gaodeli@cast.org.cn


References


[1] CHEN Z C, VICKERS G W, DONG Z M. A new principle of CNC tool path planning for three-axis sculptured part machining— a steepest- ascending tool path[J]. Journal of Manufacturing Science and Engineering, 2004, 126(3): 515-523.
[2] PARK S C. Sculptured surface machining using triangular mesh slicing[J]. Computer-Aided Design, 2004, 36(3): 279-288.
[3] DRAGOMATZ D, MANN S. A classified bibliography of literature on NC milling path generation[J]. Computer-Aided Design, 1997, 29(3): 239-247.
[4] YIN Z. Rough and finish tool-path generation for NC machining of freeform surfaces based on a multi-resolution method[J]. Computer-Aided Design, 2004, 36(12): 1 231-1 239.
[5] TUTUNEA-FATAN R O, FENG H Y. Determination of geometry-based errors for interpolated tool paths in five-axis surface machining[J]. Journal of Manufacturing Science and Engineering, 2005, 127(1): 60-67.
[6] CHO H D, JUN Y T, YANG M Y. Five-axis CNC milling for effective machining of sculptured surfaces[J]. International Journal of Production Research, 1993, 31(11): 2 559-2 573.
[7] ELBER G. Freeform surface region optimization for 3-axis and 5-axis milling[J]. Computer-Aided Design, 1995, 27(6): 465-469.
[8] OMIROU S L. A locus tracing algorithm for cutter offsetting in CNC machining[J]. Robotics and Computer-Integrated Manufacturing, 2004, 20(1): 49-55.
[9] RAO N, ISMAIL F, BEDI S. Tool path planning for five-axis machining using the principal axis method[J]. Int. J. Mach. Tools Manufact., 1997, 37(7): 1 025-1 040.
[10] PI J X, RED E, JENSEN G. Grind-free tool path generation for five-axis surface machining[J]. Computer Integrated Manufacturing System, 1998, 11(4): 337-350.
[11] BEDI S, GRAVELLE S, CHEN Y H. Principal curvature alignment technique for machining complex surfaces[J]. Journal of Manufacturing Science and Engineering, 1997, 119(6): 757-765.
[12] ZHANG Ruiqian, WANG Xiaochun, WU Xutang. Machining sculptured surfaces by curvature catering and tool trace arrangement[J]. Journal of Xi’an Jiaotong University, 1997, 31(12): 55-60. (in Chinese)
[13] YE Peiqing, CHEN Tao, WANG Jinsong. Tool path planning algorithm for five-axis NC machining of sculptured surfaces[J]. Mechanical Science and Technology, 2004, 23(8): 883-886. (in Chinese)
[14] YI Xianzhong. 5-axis CNC whirlwind milling method PDM’s rotors[C] // Proceedings of SPE International Oil and Gas Conference and Exhibition (IOGCE2000), SPE64622, November 7-10, 2000, Beijing, China, 2000: 115-121.
[15] YI Xianzhong. Tool path planning algorithm of normal curvature approach milling model for freeform surfaces[C]//Proceedings of ASME2001 International Design Engineering Technical Conference and Computers and Information in Engineering Conference (DETC’01), DETC2001/ CIE-21297, September 9-12, 2001, Pittsburgh, Pennsylvania, USA, 2001: 645-650.
[16] YI Xianzhong, GAO Deli. Normal curvature approach milling technique for machining 3D surfaces[C]// Computer-aided Production Engineering- CAPE2001, BIN H, et al, ed. England: Professional Engineering Publishing Limited, 2001: 229-233.
[17] YI Xianzhong, GAO Deli, MING Yan, et al. Tool-path planning for five-axis computer numerical control machining of helical rotors with whirlwind milling method[J]. Journal of the University of Petroleum China, 2004, 28(1): 66-69. (in Chinese)
[18] CARMO M P. Differential geometry of curves and surfaces[M]. New Jersey: Prentice-Hall, Inc., 1976.


  关于我们-联系我们-网站地图-广告服务-人才招聘-加盟合作-法律声明  

地址: 中国北京百万庄大街22号  邮编: 100037  电话: 8610-88379907  传真: 8610-68994557
E-mail: cjme@mail.machineinfo.gov.cn  http: // www.cjmenet.com.cn
©2006 版权所有《机械工程学报》编辑部