许多机床上用的刀杆装刀孔多数是方孔或长方孔，有着较高的尺寸精度、形状精度以及有对称度、垂直度等位置精度要求。对这些较精密的方孔、长方孔的加工，中小型机械加工厂可采用以下方法进行。图１圆刀杆上方孔加工１．如图１所示，加工出刀杆，刀杆外圆柱要经粗车、精车... Many machine tool used arbor mounting holes are square or rectangular hole, with high dimensional accuracy, shape accuracy and symmetry, verticality and other position accuracy requirements. For these more sophisticated square hole, rectangular hole processing, small and medium-sized mechanical processing plant can be used the following method. Figure 1 round knife bar above the hole processing 1. Shown in Figure 1, the processing of arbor, arbor through the rough car, fine car ...