基于正交试验的麻花钻钻削钛合金的刃磨参数选择

摘要

麻花钻是孔加工的重要工具之一,钻头的快速磨损制约着孔的加工质量和加工效率.基于产品抽样钻孔试验和正交试验,对高速钢麻花钻钻削钛合金的刃磨参数进行了综合分析,探讨了在不同顶角下切屑槽的有无对钻削过程的影响.试验结果表明,切屑随着顶角的增大,断屑越容易；在横刃两端开切屑槽能够减小轴向力,并有利于防止刃带的磨损,提高加工效率.%Twist drill is one of the important hole machining tools,however,the rapid wear of the drill restricting the hole processing quality and efficiency.Based on product sampling drilling and orthogonal experiment,a comprehensive analysis of the grinding parameters of high-speed steel twist drill drilling titanium alloy is conducted,flute in different vertex angle has the impact on the drilling process is discussed.The results show that the chips as the vertex angle increases,chips break more easily; open flute at both ends of the chisel edge,axial force can be reduced,and is conductive to prevent the wear of the blade band,improving the processing efficiency.