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针对麻花钻加工大长径比锭脚中孔时钻头易走偏、排屑困难、粗糙度大等问题,设计了一种流体排屑机床及自导向钻头。该专用机床配有高压油泵、液体输送管道及排屑器,加工过程中可自动排屑。自导向钻头为单边刃结构,具有自导向功能;钻头设有油孔,所通入的高压切削液冷却、润滑钻头切削刃,并通过钻头外部前后贯通的V形槽排出铁屑。自导向钻头的特殊结构,有效避免了钻头的走偏,保证了锭脚中孔与外圆的同轴度,并使孔的粗糙度由3.2μm以上降低到1.6μm。该流体排屑机床及自导向钻头克服了普通机床和麻花钻加工锭脚中孔长期以来所存在的质量缺陷,提高了生产效率,适用于纺织机械生产单位大批量、专业化加工锭脚中孔。
In order to solve the problems that the drill bit is easy to deviate, the chips are difficult to be discharged and the roughness is big when the twist drill is used to process the large aspect ratio of the spindle and the hole of the spindle, a fluid chip removal machine and a self-guide drill are designed. The special machine is equipped with high-pressure pump, liquid delivery pipe and chip conveyor, the chip can be automatically processed during processing. The self-guided drill is a single-edged blade structure with a self-guiding function. The drill bit is provided with oil holes, the high-pressure cutting fluid passed through cools and lubricates the cutting edge of the drill bit, and discharges iron filings through the V- The special structure of the self-guided drill bit effectively avoids the deviation of the drill bit, ensures the coaxiality between the middle hole and the outer circle of the ingot foot, and reduces the roughness of the hole from 3.2 μm to 1.6 μm. The fluid chip removing machine and the self-guiding drill overcome the quality defects existing in ordinary machine tools and the middle hole of a twist drill for a long time, and improve the production efficiency, and are suitable for large-volume and specialized processing of the middle hole of a textile machinery production unit .