【摘要】 针对钛合金切削加工面临的技术难题,提出一种新的Ti6Al4V加工冷却润滑介质即纳米磁性切削液,并设计了一种实验装置形成外界梯度磁场,使磁性液体持续进入切削区。这样就在金属新生表面形成边界膜,从而有效地改善切削部位的冷却和润滑效果,减少了摩擦。通过电流法分析了Ti6Al4V加工时采用一般切削液与纳米磁性切削液的铣削力情况。实验结果表明,在梯度磁场作用下使用纳米磁性切削液时,刀具与工件之间的铣削力较小并且较稳定。更多还原

【Abstract】 For technical problems of titanium alloy machining,a new cooling and lubrication medium named nanomagnetic is proposed for Ti6A14V machining,and design an experimental apparatus which can form the external magnetic field gradient that make the magnetic liquid continuously go to the cutting zone. By this way,the boundary film of new surface of the metal is formed which greatly improves the cooling and lubricating effect of the cutting portion to reduce friction. The force conditions have been analyzed by current detecting during Ti6A14V milling with general cutting fluid and nano-magnetic coolant. The results show that the nono-magnetic coolant combined with gradient magnetic field can significantly reduce force between the tool and workpiece,and make it more stable.更多还原