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拉刀夹头的优劣对孔的加工质量和生产效率有着十分重要的影响。我厂自行设计制造了一种快换拉刀夹头,经使用,取得了明显的经济效益。快换拉头由拉头体1,定位螺栓2,弹簧3、5,卡套4,T 形楔块6,定位螺帽7等组成(见附图)。使用时,将拉刀8插入拉头体的孔中,拉刀的轴向位置由定位螺栓确定。向右推动卡套(图示位置),两个 T 形楔块沉入刀柄颈部,楔紧拉刀。工作完毕,只要将卡套往左一拉,T 形楔块在弹簧5的作用下,自动张开抬起,拉刀便可退出,实现快速换刀。卡套及定位螺帽上止口的作用是在拔出拉刀时,挡住楔
Broach chuck the pros and cons of the hole processing quality and production efficiency has a very important impact. I plant designed and manufactured a quick-change broach, after use, and achieved significant economic benefits. Quick-change slider by the slider body 1, 2 bolt positioning, spring 3, 5, sleeve 4, T-shaped wedge 6, positioning nut 7 and other components (see photo). In use, the broach 8 is inserted into the hole of the slider body, the broach axial position determined by the positioning bolt. Push the ferrule to the right (pictured) and the two T-shaped wedges sink into the neck of the shank and wedge the broach. Work is completed, as long as the card to a left pull, T-shaped wedge in the spring 5, automatically open lift, broach can exit, to achieve rapid tool change. The function of the upper end of the sleeve and the positioning nut is to block the wedge when the broach is pulled out