Identification of scanning errors using touch trigger probe head

• Autorzy: Sokovic M. , Cedilnik M. , Kopac J.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: Creation of a mathematical model, which combine ball tip radius error and small tilt of the stylus to determine translational motion (in two directions) of the stylus ball centre, due to the surface slope. Design/methodology/approach: First error is described on two dimensional model, thus is very simple. Second model is based on 3D-mathematical model, which is a basis to determine (and plot) translational movement of the stylus ball according to surface slope. Findings: Accurate scanning process on freeform surface with touch trigger probe head could not be performed, due to number of reasons connected to the stylus ball and trigger probe head errors. Research limitations/implications: According to nature of this problem, 4D, 5D and 6D-graphs could not be plotted, which would define translational motion of the stylus ball centre at any slope surface. Practical implications: Understanding the physical model for described error is a basis to create mathematical compensation error model. Originality/value: No such mathematical model to determine translational motion (in two directions) of the stylus ball centre was published in any paper before.

Słowa kluczowe

EN

engineering design; scanning; touch trigger probe; stylus-tilt; ball-tip errors

PL

projektowanie techniczne; skanowanie; sonda impulsowa; ostrze wychylne sondy; kulka końcówki pomiarowej; błąd wskazań

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 383--386
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Sokovic M.

autor

Cedilnik M.

autor

Kopac J.

• Laboratory for cutting, Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, SI-1000 Ljubljana, Slovenia,

Bibliografia

• [1] M. Sokovic, J. Kopac, RE (reverse engineering) as necessary phase by rapid development, Journal of Materials Processing Technology 175 (2006) 398-403.
• [2] I. Budak, J. Hodolic, M. Sokovic: Development of a programme system for data-point pre-processing in reverse engineering, Journal of Materials Processing Technology 162-163, (2005) 730-735.
• [3] В. Acko, Method for measurement uncertainty analysis of CMM's; PhD thesis, University of Maribor, Faculty of Mechanical Engineering, Maribor 1997 (in Slovene).
• [4] W.T. Estler, S.D. Philips, B. Borchardt, T. Hoop, C. Witzgall, M. Levenson, K. Eberhardt, M. McClain, Y. Shen, X. Zhang, Error compensation for CMM touch trigger probes, J. of the Int. Societies for Precision Engineering and Nanotechnology 19 (1996) 85-97.
• [5] P.A. Cauchick-Miguel, T.G. King, Factors which inflenece CMM touch trigger probe performance, Int. J. Mach. Tools Manufact. Vol. 38, No. 4 (1998) 363-374.
• [6] M. Cedilnik, A. Sluga, M. Sokovic, J. Kopac, Identification of stylus errors on Renishaw scanning device Сyclone 2, Seminar on postgraduate study, Faculty of Mechanical Engineering, University of Ljubljana, 2006.
• [7] R.S. Clark, E.J. Greivenkamp, Ball tip-stylus correction for a stylus profilometer, J. of the Int. Societies for Precision Engineering and Nanotechnology 26 (2002) 405-411.
• [8] Y.C. Lin, W.I. Sun, Probe radius compensated by the multi-cross product method in freedom surface measurement with touch trigger probe CMM, J. of Advan. Manufact. Techn., Vol. 21, No. 10-11 (2003).
• [9] Y.L. Shen, X. Zhang, Modelling of pretravel for touch trigger probes on indexable probe heads on CMMs, J. of Advan. Manufact. Techn., Vol. 13, No. 3 (1997).
• [10] W.P. van Vliet, P.H. Schellekens, Accuracy limitations of fast mechanical probing, Vol. 45, No. 1 (1996) 483—486.