最小量润滑在振动钻削中的应用

Application of Minimum Quantity Lubricant in Vibration Drilling

为了有效地发挥最小量润滑(Minimum quantity lubrication,MQL)在钻削加工中的冷却和润滑性能,把MQL和振动钻削技术结合起来,对MQL在钻削加工(尤其是振动钻削)中的作用效果进行理论分析和试验研究,并对加工中的最大轴向力和表面粗糙度进行测量。研究结果表明,与普通钻削相比,振动钻削能够有效改善MQL的作用效果,通过合理选择参数,能使最大轴向力明显减小,表面粗糙度显著改善;增大振幅是提高MQL作用效果的有效途径,能够降低表面粗糙度,提高加工质量。

In order to make full use of good cooling and lubricating performance of minimum quantity lubrication （MQL） cutting fluid in drilling, MQL is combined with vibration drilling and its application effect is studied theoretically and experimentally. The maximum thrust force and surface roughness in the machining process is measured. The results show that, contrast with common drilling, vibration drilling can improve the action effect of MQL effectively. Through rational selection of parameters, vibration drilling can make maximum thrust force decrease evidently and improve surface roughness significantly. Moreover, increasing amplitude is a good way for improving the action effect of MQL, which can reduce surface roughness and improve machining quality.