三坐标测量机是一种新型的、现代化的测量仪器,它的特点是仪器具有三维、四维、甚至五维的位移坐标,因此可实现全方位测量。影响三坐标测量机精度的误差有以下9个因素。 1.导轨运动的直线度造成的误差。导轨运动的直线度包括角值和线值两部分,设导轨运动直线度的角度差为Sxa、Sya、Sza;线值误差为S_(XL)、S_(YL)、S_(ZL)。由于三坐标测量机无法使基准尺跟踪测量线,常常是不符 CMM is a new type of modern measuring instrument, which is characterized by the instrument has a three-dimensional, four-dimensional, or even five-dimensional displacement coordinates, it can achieve a full range of measurements. The error that affects the accuracy of CMM has the following 9 factors. 1. Rail movement caused by the error of straightness. The straightness of the rail movement includes two parts: the angle value and the line value. The angular difference of the straightness of the rail movement is Sxa, Sya and Sza. The line error is S XL, S YL and S ZL. Because CMMs can not make the ruler follow the measurement line, it is often not true