Abstract
During the working of portable flexible CMM, the mechanical arm’s gravity and operating load generate dynamic strain, the thermal distortion also results in its length change. The caused errors would severely deteriorate the measuring accuracy. An error compensating system of the mechanical arm is designed in this paper, based on the monitor of dynamic strain and environmental temperature. The mathematical model of portable flexible coordinate measuring machine (CMM) was established.For the dynamic strain, four resistance strain gauges are sticked symmetrically on the root of each mechanical arm to monitor the dynamic strain. Then length error caused by the measuring arm’s gravity or external operation load can be calculated through the analysis of stress. Strain compensation can be realized, when they are fed back to the measurement procedures. For thermal distortion, the temperature values acquired by the single-linear digital thermometer are substituted in the correction formula to calculate the relevant compensation dosage. Finally, these compensation dosages are feedbacked to the measuring program to have these errors compensated continually. The integrated error compensation system can improve the measurement accuracy of portable flexible CMM effectively.
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Ye, D., Huang, Q. C., Che, R. S.: Error modeling for multi-joint coordinate measuring machine. J. Optics and Precision Engineering 7(2), 92–96 (1999)
Ye, D., Che, R.S.: Modeling and error analysis for Human-simulating multi-joint coordinate measuring machine. Journal of Harbin Institude of Technology 31(2), 28–32 (1999)
Wang, X.Y., Liu, S.G., Zhang, G.X.: Mathematical Model and error Analysis of the Articulated Arm Flexible CMM. J. Nanotechnology and Precission Engineering 3(4), 262–267 (2005)
Xu, J.X.: The develop of portable Articulated Arm CMM. D. Research institute of mechanical science, Beijing, (2007)
Li, Z.W., Wang, C.J., Zhou, X.H.: Mathematical Model and Parameter Calibration of the multi-joint coordinate measuring machine. J. Mechanical Processing Technology and Equipment (6), 35–36 (2006)
Denavit, J., Hartenberg, R.: A kinematic notation for lower pair mechanism based on matrices. J. ASME Journal of Applied Mechnics 22(6), 215–221 (1955)
Chen, T.: Application of Single Chip Processor and C language programming. China Machine Press, Beijing (2008)
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© 2011 IFIP International Federation for Information Processing
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Cao, QS., Zhu, J., Gao, ZF., Xiong, GL. (2011). Design of Integrated Error Compensating System for the Portable Flexible CMMs. In: Li, D., Liu, Y., Chen, Y. (eds) Computer and Computing Technologies in Agriculture IV. CCTA 2010. IFIP Advances in Information and Communication Technology, vol 347. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18369-0_48
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DOI: https://doi.org/10.1007/978-3-642-18369-0_48
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-18368-3
Online ISBN: 978-3-642-18369-0
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