数控机床是一个典型的多体系统 ,若干部件以不同形式连接在一起 ,可以有多个分支。对数控机床误差源的大量研究表明 ,机床几何误差、热变形误差和载荷变形误差占总误差中的比例大 ,而刀具、夹具和工件误差也可列入总误差之中。对于以上的误差处理有两种方法 :其一是误差避免 ; CNC machine tool is a typical multi-body system, several components connected together in different forms, you can have multiple branches. A large number of studies on CNC machine tool error sources show that the geometric error, thermal deformation error and load deflection error of the machine tool account for a large proportion of the total error, while the tool, fixture and workpiece errors can also be included in the total error. For the above error handling there are two ways: one is to avoid errors;