激光跟踪仪是目前最新型的便携式空间大尺寸坐标测量系统,其坐标测量精度的校准目前常用标准件进行评定,但标准件的加工制造困难且易变形。因此本文利用高精度三坐标测量机及标准球,在三坐标测量机上建立虚拟三维网格标准球板,并通过移站对激光跟踪仪坐标测量精度进行实验研究。虚拟三维网格标准球板消除了由于标准件变形给坐标测量精度带来的影响,移站测量可以从不同的角度和位置全方位地测量工件各部位待测点的坐标,避免了外界环境的影响,也改善通视条件,实验结果证明该方法具有理论正确性和实际可行性。
Laser tracker system (LTS) is one of the latest portable three dimensional large size coordinate measuring machines (CMMs). The major calibrating method of LTS coordinate measuring accuracy is using standard gauge, but the gauge manufacturing is more difficulty and expensive. In order to resolve the above problem, a novel method of using virtual standard ball plate grid to calibrate LTS coordinate measuring accuracy is proposed. The virtual 3D grid established by high accuracy CMM can eliminate the effect o...