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1、普通固定式铰刀铰孔是孔加工中应用十分广泛的一种精加工方法,不仅在钻床上使用,也在车床上使用。在大批量生产中,把铰孔工序排入组合机床和自动机床的多工位自动线的工作循环中,就要求刀具能在具有足够耐用度的情况下稳定地加工出几何形状精度高,尺寸精度高和表面光洁度高的孔。实现这个要求往往是相当困难的,人们必须把很大的注意力放到所使用刀具的选择,设计和制造上。最常用的铰刀是直齿或螺旋齿高速钢(HSS)铰刀。刀齿顶部很窄的圆柱导向棱带
1, ordinary fixed reamers reaming hole processing is widely used in a finishing method, not only used in the drilling, but also on the lathe. In mass production, the reaming process into the combination of machine tools and automatic machine multi-station automatic line of work cycle, requires the tool can have sufficient durability in the case of stable geometry with high precision, dimensional accuracy High and surface finish high hole. It is often quite difficult to meet this requirement, and one must devote a great deal of attention to the choice, design and manufacture of the tools used. The most commonly used reamers are spur or helical high speed steel (HSS) reamers. A very narrow cylindrical guide rib at the tip of the tooth