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在镗排上,如采用推压螺钉不能从镗刀杆侧面压紧镗刀时,可采用如图示的结构。把镗刀杆2装入带有内圆锥螺母1和锥套钻夹7的镗排3内,镗刀杆的尾部内装有带粗细牙螺纹的螺栓4,这样可一边调节刀头的轴向位置,一边达到压紧目的。镗刀杆上设置一个定位键,使镗刀杆不能在镗排孔内旋转。镗刀杆尾端加工出一个粗牙螺孔6,转动和该螺孔相啮合的螺栓时,由于螺栓头部是细牙螺纹5,可利用粗、细牙螺距差,使镗刀杆在轴线方向进行微动,从而使刀尖起到微调作用。
In the boring row, such as the use of push screws can not be boring boring bar side boring tool, the structure can be used as shown. The boring bar 2 into the boring row with an inner conical nut 1 and the drill chuck 7 boring row 3 boring bar tail bolt 4 with a thick thread, which can be adjusted while adjusting the axial position , While achieving the purpose of compression. Boring bar set a positioning key, so that boring bar can not rotate in the boring row of holes. Boring bar end machined out of a coarse tooth screw hole 6, turning and the screw meshing bolt, the bolt head is a fine thread 5, the coarse and fine pitch difference can be used to make the boring bar in the axis The direction of fretting, so that the tip play a role in fine-tuning.