我厂在制造SZ-250注塑机齿轮箱时,用镗模镗各档轴承孔;在镗Φ75×2.7卡簧槽时(见图1),我们设计了卡簧槽切槽刀排,其结构见图2。使用时,先将刀杆6塞进原镗模内回转衬套中,装上切刀3和切刀座1,用螺钉固定。依靠垫圈4调整切刀和齿轮箱的相对位置(齿轮箱和模板间用靠板定位,图上未标出)。切刀径向送进杆12用万向节和镗床主轴连接,切刀径向进给量由调节垫圈10来控制。工作时,镗床主轴一边回转,一边送进,依靠键5和镗模衬套配合,使刀杆轴6和镗杆内衬回转。由于切向刀杆的送进,使切刀沿斜面上升。当调节螺母11使 I plant in the manufacture of SZ-250 injection molding machine gearbox, the boring mold boring each file bearing hole; boring φ75 × 2.7 card spring groove (see Figure 1), we designed the card spring slot grooving knife row, the structure See Figure 2. When using, firstly insert the arbor 6 into the rotary bushing in the original boring mold, install the cutter 3 and the cutter holder 1, and fix it with the screw. Rely on washer 4 to adjust cutter and gear box relative position (gear box and the template with the board positioning, not shown). The cutter radial feed rod 12 is connected with the spindle of the boring machine by a universal joint. The radial feed of the cutter is controlled by the adjusting washer 10. Work, the boring spindle while rotating, while feeding, relying on the key 5 and the boring bushing with the tool shaft 6 and the boring bar liner rotation. Due to the tangential bar feed, so that the knife along the ramp up. When the adjustment nut 11 makes