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    Wyświetlanie 1-3 z 3
    Tytuł:
    Application of the FARO laser tracker to the study of selected functional characteristics of a Kawasaki ZD130 industrial robot
    Autorzy:
    Ćwiąkała, P.
    Cisińska, A.
    Szotek, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/114228.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    industrial robots
    laser tracker
    accuracy
    precision
    Opis:
    The paper presents the test results of the following functional characteristics of a Kawasaki ZD130 industrial robot: the accuracy and repeatability of unidirectional positioning, the variance of multidirectional positioning and the accuracy and repeatability of distance. The influence of the speed of movement and load on the values of aforementioned functional characteristics was also examined. Measurements were made with the FARO Laser Tracker Vantage coordinate measuring machine. The research was conducted in accordance with the PN-EN ISO 9283:2003 standard.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 10; 475-479
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rotation error modeling and identification for Robot kinematic calibration by circle point method
    Autorzy:
    Santolaria, J.
    Conte, J.
    Pueo, M.
    Javierre, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/221417.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    circle point
    robot calibration
    laser tracker
    mathematical optimization
    Opis:
    Screw axis measurement methods obtain a precise identification of the physical reality of the industrial robots’ geometry. However, these methods are in a clear disadvantage compared to mathematical optimisation processes for kinematical parameters. That’s because mathematical processes obtain kinematical parameters which best reduce the robot errors, despite not necessarily representing the real geometry of the robot. This paper takes the next step at the identification of a robot’s movement from the identification of its real kinematical parameters for the later study of every articulation’s rotation. We then obtain a combination of real kinematic and dynamic parameters which describe the robot’s movement, improving its precision with a physical understanding of the errors.
    Źródło:
    Metrology and Measurement Systems; 2014, 21, 1; 85-98
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Uncertainty evaluation of multilateration-based geometric error measurement considering the repeatibility of positioning of the machine tool
    Autorzy:
    Liu, Xingbao
    Xia, Yangqiu
    Rui, Xiaoting
    Powiązania:
    https://bibliotekanauki.pl/articles/2206791.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sequential-multilateration
    laser tracker
    machine tool
    geometric error
    measurement uncertainty
    Opis:
    The sequential multilateration principle is often adopted in geometric error measurement of CNC machine tools. To identify the geometric errors, a single laser tracker is placed at different positions to measure the length between the target point and the laser tracker. However, the measurement of each laser tracker position is not simultaneous and measurement accuracy is mainly subject to positioning repeatability of the machine tool. This paper attempts to evaluate the measurement uncertainty of geometric errors caused by the positioning repeatability of the machine tool and the laser tracker spatial length measurement error based on the Monte Carlo method. Firstly, a direct identification method for geometric errors of CNC machine tools based on geometric error evaluation constraints is introduced, combined with the geometric error model of a three-axis machine tool. Moreover, uncertainty contributors caused by the repeatability of positioning of numerically controlled axes of the machine tool and the laser length measurement error are analyzed. The measurement uncertainty of the geometric error and the volumetric positioning error is evaluated with the Monte Carlo method. Finally, geometric error measurement and verification experiments are conducted. The results show that the maximum volumetric positioning error of the machine tool is 84.1 μm and the expanded uncertainty is 5.8 μm ( = 2). The correctness of the geometric error measurement and uncertainty evaluation method proposed in this paper is verified compared with the direct geometric error measurement methods.
    Źródło:
    Metrology and Measurement Systems; 2023, 30, 1; 49--63
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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