如图1所示的立方体上,每一个面都开有一个方孔,即共有a、b、c、d、e、f六个方孔,可与不同规格的丝攻或铰刀尾部的方榫配合使用。在车床上攻丝或铰孔时,不管何种规格的丝攻或铰刀,只要将其尾部的方榫装入立方体相应的方孔内,再将立方体装入如图2所示的夹具内,就可在车床上进行攻丝或铰孔 As shown in Figure 1 on the cube, each side has a square hole opened, that is a total of a, b, c, d, e, f six square hole, with different specifications of wire tapping or reamer tail of the square Tenon with the use. In the tapping or reaming lathe, no matter what the specifications of the wire tapping or reamer, as long as the tail of the mortise and tenons into the cube corresponding square hole, then the cube into the fixture shown in Figure 2 , You can tapping or reaming in the lathe