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以轴向力和扭矩为判据比较分析了三种涂层高速钢钻头钻削不锈钢时的切削性能。试验结果表明 :TiN表面多层涂层钻头钻削效果最好 ,TiCN表面多层涂层钻头次之 ,TiN单层涂层钻头钻削效果最差。同时发现 :不同涂层钻头钻削不锈钢时产生的轴向力和扭矩值随进给速度的增加而增大 ,但在固定进给速度 (0 .12mm/r)、改变转速时 ,三种涂层钻头的轴向力与扭矩值在转速为 1.4r/s时最小 ;转速增加至 2 .0r/s时轴向力和扭矩增至最大 ;转速继续增加至 2 .6r/s时轴向力与扭矩值开始下降
Based on the axial force and torque, the cutting performance of three kinds of coated HSS drill bits is compared and analyzed. The experimental results show that the TiN surface multi-layer coating drill has the best drilling performance, the TiCN surface multi-layer coating drill followed, and the TiN single layer coating drill has the worst drilling effect. At the same time, it is found that the axial force and torque value of stainless steel with different coating drills increase with the increase of feed rate, but when the feed speed is fixed (0.12mm / r) and the speed is changed, The axial force and torque value of the layer drill bit are the minimum when the rotation speed is 1.4r / s; the axial force and torque increase to the maximum when the rotation speed increases to 2.0r / s; the rotation speed continues to increase to 2.6r / s when the axial force And the torque value begins to drop