用于深孔加工的刀具有特长麻花钻、带冷却孔麻花钻、枪钻、BTA深孔钻、自导式喷射钻等。本文介绍的是一种特殊的高速钢深孔麻花钻,用它一次进刀可加工出孔深与孔径之比为30的深孔。它适用于铸铁。碳钢、高锰、高铬、高镍等合金钢,尤其适用于奥氏体不锈钢的钻削。 Knives for deep hole machining feature twist drills, twist drills with cooling holes, gun drills, BTA deep hole drills, self-guided jet drills and more. This article describes a special high-speed steel deep-hole twist drill, with one pass it can be machined into the hole depth and aperture ratio of 30 deep holes. It is suitable for cast iron. Carbon steel, high manganese, high chromium, high nickel and other alloy steel, especially for austenitic stainless steel drilling.