一、研究目的通过对测量装置的系统几何误差(导向误差、位置误差和垂直度误差)全进行数字修正,可提高 CNC 座标测量机的准确度。这种方法可称为 CAA 法,即计算机辅助准确度方法。PTB 为此目的已建立了一个普遍有效的数学理论模型,并已作为软件储存在座标测量机的计算机内,用于测量时的在线修正。可靠地应用 First, the purpose of the study by measuring the geometric error of the device (guidance error, position error and verticality error) all the figures for correction, can improve the accuracy of CNC coordinate measuring machine. This method can be called the CAA method, that is, computer-aided accuracy method. PTB has established a universally valid mathematical theoretical model for this purpose and has been stored as software in the CMM computer for on-line correction of measurements. Reliable application