Browse > Article

Research on Machineability in NURBS Interpolator Considering Constant Material Removal Rate  

Ko Tae Jo (영남대학교 기계공학부)
Kim Hee Sul (영남대학교 기계공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.21, no.12, 2004 , pp. 60-66 More about this Journal
Abstract
Increasing demands on precision machining of 3D free-form surface have necessitated the tool to move smoothly with varying feedrate. To this regard, parametric interpolators such as NURBS (Non-Uniform Rational B-Spline) interpolator have been introduced in CNC machining system. Such interpolators reduce the data burden in NC code, increase data transfer rate into NC controller, and finally give smooth motion while machining. In this research, a new concept to control cutting load in NURBS Interpolator was tried based on the curvature of curve. This is to protect cutting tool, and to have good machinability. For proof of the system, cutting force and surface topography were evaluated. From the experimental results. the interpolator is good enough for machining a free-form surface.
Keywords
Interpolator; NURBS; Material removal rate; Machinability;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Kim, M. J., Song, J. I., Kwon, D. S., 2000, 'NURBS interpolation algorithm for CNC machining with high speed and high precision,' Journal of KSPE, Vol. 17, No. 1, pp. 192-197   과학기술학회마을
2 Hong, W. P., Yang, M. Y., 2000, 'NURBS interpolation algorithm for CNC machines,' Journal of KSPE, Vol. 17, No. 12, pp. 115-120   과학기술학회마을
3 Farouki, R. T., Manni, C., Sestini, A., 'Real-time interpolators for Bezier conics,' Computer-Aided Geometric Design, Vol. 18, pp. 639-655, 2001   DOI   ScienceOn
4 Lartigue, C., Thiebaut, F., Maekawa, T., 'CNC tool path in terms of B-spline curves,' Computer-Aided Design, Vol. 33, pp. 307-319, 2001   DOI   ScienceOn
5 Bahr, B., Xiao, X., Krishnan, K., 'A real time scheme of cubic parametric curve interpolations for CNC systems,' Computers in Industry, Vol. 45, pp. 309-317, 2001   DOI   ScienceOn
6 Farouki, R., Manjunathaiah, J., Yuan, G. F., 'G code for the specification of Pythagorean-hodograph tool paths and associated federate functions on open-architecture CNC machines,' International Journal of Machine Tools & Manufacture, Vol. 39, pp. 123-142, 1999   DOI   ScienceOn
7 Yeh, S., Hsu, P., 'Adaptive-feedrate interpolation for parametric curves with a confined chord error,' Computer-Aided Design, Vol. 34, pp. 229-237, 2002   DOI   ScienceOn
8 Shpitalni, M., Koren, Y., Lo, C. C., 'Realtime curve interpolator,' Computer-Aided Design, Vol. 26, No. 11, pp. 832-838, 1994   DOI   ScienceOn
9 Yang, D. C. H., Kong, T., 'Parametric interpolator versus linear interpolator for precision CNC machining,' Computer - Aided Design, Vol. 26, No. 3, pp. 225-234, 1994   DOI   ScienceOn
10 Huang, J. T., Yang, D. C. H., 'A generalized interpolator for command generation of parametric curves in computer-controlled machines,' Japan/USA Symposium on Flexible Automation- Vol. 1, pp. 393-399, 1992
11 Chou, J. J., Yang, D. C. H., 'Command generation for three axis CNC machining,' Journal of Engineering for Industry, Vol. 113, pp. 305-310, 1991   DOI
12 Kim, S. J., Jung, T. S., Yang, M. Y., 'Feedrate optimization using CL syrface,' Journal of KSPE, Vol. 21, No. 4, pp. 39-47, 2004   과학기술학회마을
13 Farouki, R. T., Manjunathaiah, J., Nicholas, D., Yuan, G. F., Jee, S., 'Variable-feedrate CNC interpolators for constant material removal rates along Pythagorean-hodograph curves,' Computer- Aided Design, Vol. 30, No. 8, pp. 631-640, 1998   DOI   ScienceOn
14 Tikhon, M., Ko, T. J., Kim, H. S., Kim, J. H., 'Variable feedrate interpolator for NURBS curve considering material removal rate,' Journal of KSMTE, Vol. 12, No. 2, pp. 1-8, 2003   과학기술학회마을
15 Piegl, L., Tiller, W., The NURBS book, Berlin, Springer, 1997
16 Cheng, M.-Y., Tsai, M.-C., Kuo, J.-C., 'Real-time NURBS command generators for CNC servo controllers,' International Journal of Machine Tools & Manufacture, Vol. 42, pp. 801-813, 2002   DOI   ScienceOn
17 Krishnan, K. K., Kappen, J., Bahr, B., 'Calculation of variable federate and spindle speed for NURBS based CNC machining,' Transactions of NAMRI/SME, Vol. 24, pp. 429-435, 2001