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从一面加工同轴孔。箱体零件上被加工孔的位置和尺寸关系,通常要求刀具在两个导套内导向。采用两个导向套时,刀具同主轴要用浮动卡头连接。双导向加工时,被加工孔的不同轴度△_(H·CB)取决于可换导套轴线的不重合度△_(H·CB·C)、刀具轴线在刀具和导套之间间隙内的几何偏移△_(Н·СВ·Г·И)及刀具的弹性变形△_(Н·СВ·y·И):
Coaxial holes machined from one side. The position and size of the machined hole in the box part are usually related to the orientation of the tool in the two guide bushings. When two guide sleeves are used, the tool should be connected to the spindle with a floating chuck. In dual-guided machining, the misalignment △ _ (H · CB) of the hole to be machined depends on the misalignment △ _ (H · CB · C) of the axis of the bushing. The tool axis is between the tool and the bushing Gap in the geometric deviation △ _ (Н · СВ · Γ · И) and the tool elastic deformation △ _ (Н · СВ · y · И):