用磨花钻加工PCrNiMo 钢φ40×500毫米深孔时,由于材质硬而粘,钻头磨损厉害、排屑困难、生产效率低,且常出现卡紧或折断钻头现象,满足不了生产需要。为此,我们改用枪钻钻头,用压缩空气抽吸切屑和喷射冷却液,使排屑通畅,切削顺利、钻头寿命增长,生产效率大大提高。这种深孔钻结构简单、操作灵便、成本低、上马快,不需要高压油泵。 When grinding PCrNiMo steel with φ40 × 500mm deep hole, it is hard and sticky because of hard material. The drill bit is worn badly, the chips are difficult to be produced, the production efficiency is low, and the phenomenon of clamping or breaking bit often appears, which can not meet the production needs. To this end, we use the gun drill bit, the use of compressed air suction chip and jet coolant, so chip unobstructed, smooth cutting, drill bit life expectancy, greatly improving production efficiency. This deep hole drilling structure is simple, flexible operation, low cost, quick start, do not need high pressure pump.