目前,对于中小直径内孔的精加工,铰削仍然不失为一种有效的工艺手段在机械加工中广泛地应用。但是,铰刀存在一个很大的缺点,即决定铰刀直径的刀齿顶部很窄的圆柱导向刃带,在切削过程中极易磨损。而通常所使用的标准铰刀又大都是固定式的。所以一旦导向刃带的磨损超出了规定的公差值,铰刀的直径就相应减小而只能报废。为此,我们结合生产实际,设计了一种扩胀式硬质合金铰刀。这样,刀具在磨损后,就可 At present, for the small diameter bore finishing, reaming is still an effective tool in the mechanical processing widely used. However, the reamer has the big disadvantage of having a narrow, narrow, cylindrical guide land that defines the diameter of the reamer and is extremely susceptible to wear during the cutting process. And usually the standard reamers are mostly fixed. So once the leading edge of the wear and tear beyond the specified tolerance, the diameter of the reamer reduced accordingly and can only be scrapped. To this end, we combine the actual production, designed an expansion carbide reamers. In this way, the tool after wear, you can