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单刃枪钻(下称枪钻)用于加工直径Φ1～35mm、长径比达100～250倍的深孔,是目前加工Φl～6mm小直径深孔的唯一方法。加工孔的精度可稳定在IT 8～10级,个别的可达IT6～7级;表面粗糙度可稳定在Ra12.5～3.2μm(▽3～▽5),个别的可达Ra0.8～0.4μm(▽7～▽8),孔的直线度可达0.05mm/m。枪钻的应用范围很广,除适用于加工普通钢料与铸件外,还能加工软金属、合金钢、不锈钢和耐热钢等。
Single-blade gun drill (hereinafter referred to as gun drill) for the processing of Φ1 ~ 35mm diameter, length to diameter ratio of 100 to 250 times deep holes, is the current processing Φ1 ~ 6mm small diameter deep hole the only way. The precision of the machined hole can be stabilized at IT 8 ~ 10, and the individual can reach IT6 ~ 7; the surface roughness can be stabilized at Ra12.5 ~ 3.2μm (▽ 3 ~ ▽ 5), some of which can reach Ra0.8 ~ 0.4μm (▽ 7 ~ ▽ 8), the hole straightness of up to 0.05mm / m. Gun drill a wide range of applications, except for the processing of ordinary steel and castings, but also processing of soft metals, alloy steel, stainless steel and heat-resistant steel.