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4.工艺系统弹性变形对孔轴线偏移影响的确定 在自动线或流水线的加工工位上固定的工件孔轴线与刀具轴线不重合。偏移量取决于上道加工工序之后工件孔轴线相对于其工艺基准(平面和圆柱定位销孔轴线)的偏移△_(ΠP)、机床主轴轴线相对于工位定位基准(定位块平面和圆柱定位销轴线)的位置误差△_ρ以及工件在该工位的定位误差ε(参看图51)。
4. Process system elastic deformation of the hole axis offset to determine the impact of the automatic line or pipeline processing station fixed workpiece hole axis and the tool axis does not coincide. The offset depends on the offset Δ_ (Π P) of the workpiece hole axis relative to its process datum (plane and cylinder locator hole axis) after the upper machining operation, the machine spindle axis relative to the station locating datum (locating block plane and Cylinder positioning pin axis position error △ _ρ and workpiece positioning error in the station ε (see Figure 51).