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当磨削长轴时,由切削力而引起的弹性变形,使磨出的轴在全长上直径不同,因此用轴一个截面上的直径信息来控制纵向磨削过程是不够的。大家知道,在稳定的磨削过程中,每个行程磨下的金属量等于工作台每次行程的横向进给量t,并且轴首先在机床两顶尖支承端达到规定尺寸,因为这里的刚性大,轴的变形小。图1所示为纵向磨削时磨下余量的示意图。所以,为提高纵向截面的形状精度,在控制纵向磨削过程时必须有沿轴被磨削表面全长
When grinding the long shaft, the elastic deformation caused by the cutting force causes the diameter of the shaft to be worn to be different over the entire length. Therefore, it is not sufficient to control the longitudinal grinding process by using the diameter information of one section of the shaft. As we all know, in a stable grinding process, the amount of metal milled in each stroke is equal to the transverse feed t per stroke of the table, and the shaft first reaches the specified dimensions at the two top support ends of the machine because of its large stiffness , Shaft deformation is small. Figure 1 shows the longitudinal grinding grinding the remaining schematic. Therefore, in order to improve the longitudinal section of the shape accuracy, longitudinal grinding process in the control must be along the shaft full length of the surface to be ground