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The Displacement Minimization of the tool Center Point by the Crossrail Structure Improvement of the Portal Machine  

Lee, Myung-Gyu (한국생산기술연구원)
Song, Ki-Hyeong (한국생산기술연구원)
Choi, Hag-Bong ((주)기흥기계)
Lee, Dong-Yoon (한국생산기술연구원)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.20, no.3, 2011 , pp. 310-315 More about this Journal
Abstract
General portal machine represents a distinct weak spot concerning their structural behavior because of long protruding structure components, such as saddles and rams. The weak point causes the deformation of the machine tool and consequently rises a severe machining error. The purpose of this study is to improve the structural design of crossrail in order to minimize it's distortion. Tool Center Point (TCP) was chosen as a reference point for evaluating the distortion effect of a crossrail and topological optimization was adopted as a method of structural design improvement. The displacements of TCP according to the machining positions were investigated by structural analyses for both of original crossrail design and the improved one. The comparing results showed that the displacement of TCP could be reduced about 55% maximum.
Keywords
Portal machine; TCP(Tool center point); Structural Analysis; Topology optimization;
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  • Reference
1 Brecher. C., Manoharan. D., and Klein. W., 2010, "Active Compensation for Portal Machines," Production Engineering, Vol. 4, No. 2-3, pp. 255-260.   DOI
2 Brecher. C., Manoharan. D., and Stephan Witt. E. W. E., 2008, "Structure Integrated Adaptronical Systems for Machine Tools," Production Engineering, Vol. 2, No. 2, pp. 219-223.   DOI
3 Choi. Y. H., Jang. S. H., Kim. I. S., Cho. Y. J., and Oh. C. W., 2006, "Structural Layout Design Alternative of a 5-Axes Multi-tasking Machine Considering Loop Stiffness," Proceedings of the KSMTE Spring Conference, pp. 226-231.
4 Lee. M. K., Park. J. B., Kim. N. S., Min. D. L., and Lee. E. S., 2010, "Deflection Measurement and Analysis of the Cross Rail for Gantry type Machine Tools," Proceedings of the KSMTE Autumn Conference, pp. 78-82.
5 Optistruct, 2010, Optistruct 10.0 Reference, Altair Engineering Inc.