在以精加工为主的高精度座标镗床上,切削力并不大,而由于移动部件自重引起的弹性变形,照例是在装配机床中用刮研导轨的办法来补偿。引起弹性变形的主要原因是装在可移工作台上的工件的重量。当工作台装上工件后的位置改变,龙门框架相对工作台的倾角也随之而变。在加工高大而又沉重的工件时,由于倾角的变化而产生角误差与 In the high-precision finishing boring jig boring machine, the cutting force is not large, but due to the elastic deformation of the moving parts due to their own weight, as usual, in the assembly of machine tools to scratch the way with the guide to compensate. The main cause of elastic deformation is the weight of the workpiece mounted on the movable table. When the workbench mounted on the workpiece after the position change, gantry frame relative to the table inclination also will change. In the processing of tall and heavy workpieces, due to changes in tilt angle and error