在中职机械加工专业中主要对刀具和夹具引起的误差进行了重点讲解与分析,对工艺系统的机床、受力变形、受热变形、工件残余内应力等方面因素引起的误差内容只是作了简单的介绍,而在实际生产中这些误差又不可避免,直接影响到产品的精度;因此本文只对工艺系统中机床、受力变形、受热变形、工件残余内应力引起的误差进行重点分析。 In the professional machining professional in the main tool and fixture caused by the error was the focus of explanation and analysis of the process system of machine tools, stress deformation, thermal deformation, the workpiece residual stress and other factors caused by the error content is made simple In the actual production of these errors are inevitable, a direct impact on the accuracy of the product; Therefore, this article only on the process system machine tools, stress deformation, thermal deformation, the workpiece residual stress caused by stress analysis.