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螺纹磨床广泛用于工具生产中较高精度的螺纹的加工。机床的热变形是导致加工误差的因素，因此在设计这种精密机床时有必要测定机床各零部件热变形的大小和方向、机床达热平衡所需要的时间以及机床温度场的情况，以了解各热源的影响。为了分别了解各热源对热变形大小的影响，应依次对各热源作单独试验。 本文在S7620型螺纹磨床的床身、砂轮架、工作台运动曲线、工件头架、传动链精度、磨削试验等项热变形试验的基础上，提出了导致加工误差的主要因素和减少发热对加工精度的影响的一些措施。
Thread grinders are widely used in the production of high-precision thread machining. Machine tool thermal deformation is the cause of processing errors, so in the design of this precision machine tool is necessary to determine the size and direction of the thermal deformation of various parts of the machine tool heat balance time and machine temperature field conditions to understand each Effect of heat source. In order to understand the influence of each heat source on the thermal deformation size separately, each heat source should be tested separately. Based on the hot deformation tests of the bed, the wheel carrier, the movement curve of the workbench, the headstock of the workbench, the accuracy of the transmission chain and the grinding test of the S7620 threaded grinder, the main factors leading to the machining error and the countermeasures to reduce the heat generation Some measures of the impact of processing accuracy.