A novel orientation and position measuring system for large & medium scale precision assembly

Abstract In the field of precision assembly of large & medium scale, the orientation and position measurement system is quite demanding. In this paper a novel measuring system, consisting of four motorized stages, a laser rangefinder, an autocollimator and a camera is proposed to assist precision assembly. Through the design of coaxial optical system, the autocollimator is integrated with a laser rangefinder into a collimation rangefinder, which is used for measuring orientation and position synchronously. The laser spot is adopted to guide autocollimation over a large space and assist the camera in finding collimated measurand. The mathematical models and practical calibration methods for measurement are elaborated. The preliminary experimental results agree with the methods currently being used for orientation and position measurement. The measuring method provides an alternative choice for the metrology in precision assembly.

[1]  William T. Estler,et al.  Large-Scale Metrology – An Update , 2002 .

[2]  Hari Balakrishnan,et al.  6th ACM/IEEE International Conference on on Mobile Computing and Networking (ACM MOBICOM ’00) The Cricket Location-Support System , 2022 .

[3]  Jörg Krüger,et al.  Intelligent Assist Systems for Flexible Assembly , 2006 .

[4]  Fiorenzo Franceschini,et al.  Mobile Spatial coordinate Measuring System (MScMS) – introduction to the system , 2007 .

[5]  Soohyun Kim,et al.  Design methods for six-degree-of-freedom displacement measurement systems using cooperative targets , 2002 .

[6]  Jigui Zhu,et al.  A single-station multi-tasking 3D coordinate measurement method for large-scale metrology based on rotary-laser scanning , 2013 .

[7]  D P Loukianov,et al.  Precision angle measurement in a diffractional spectrometer by means of a ring laser , 1998 .

[8]  W L Eichhorn.  Optical alignment measurements at Goddard Space Flight Center. , 1982, Applied optics.

[9]  Qifeng Yu,et al.  A universal and flexible theodolite-camera system for making accurate measurements over large volumes , 2012 .

[10]  Raymond G. Ohl,et al.  Methods for correlating autocollimation of theodolites and coordinate metrology in spacecraft systems , 2006, SPIE Astronomical Telescopes + Instrumentation.

[11]  Vytautas Giniotis,et al.  Creation of a multi-reference-angle comparator , 2009 .

[12]  Fengzhou Fang,et al.  Large-scale space angle measurement , 2008 .

[13]  Takamasa Suzuki,et al.  Two-dimensional small-rotation-angle measurement using an imaging method , 2006 .

[14]  Andreas Just,et al.  Calibration of high-resolution electronic autocollimators against an angle comparator , 2003 .

[15]  P. Maropoulos,et al.  Modelling and optimization of novel laser multilateration schemes for high-precision applications , 2005 .

[16]  Hyungsuck Cho,et al.  Measurement of 6-DOF displacement of rigid bodies through splitting a laser beam: experimental investigation , 2001, SPIE Optics East.

[17]  Markus Vincze,et al.  Real-time contactless measurement of robot pose in six degrees of freedom , 1995 .

[18]  Masroor Ikram,et al.  Optical measurements of angle and axis of rotation. , 2008, Optics letters.

[19]  Stephen Kyle,et al.  Large‐Scale Metrology , 2005 .

[20]  Measurement of position and orientation of optical elements in interferometric gravity wave detectors , 1997 .

[21]  R Probst,et al.  Dynamic angle measurement by means of a ring laser , 1997 .

[22]  Antony R Mileham,et al.  A comparison of two distributed large-volume measurement systems: The mobile spatial co-ordinate measuring system and the indoor global positioning system , 2009 .

[23]  Tom L. Zobrist,et al.  Measurements of large optical surfaces with a laser tracker , 2008, Astronomical Telescopes + Instrumentation.

[24]  L. Cai,et al.  Interferometer for small-angle measurement based on total internal reflection. , 1998, Applied optics.

[25]  André Voet,et al.  Optical measurement techniques for mobile and large scale dimensional metrology , 2007 .