TiAlN 涂层钻头钻削钛合金的实验研究
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湖南科技大学机电工程学院

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TH16

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Investigation on Drilling Performance of Titanium Alloy by TiAlN Coated Drills
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    摘要:

    采用TiAlN 涂层硬质合金麻花钻对钛合金(TC4)进行钻削试验,研究了切削用量对轴向力、加工
    孔壁表面粗糙度和切屑形态的影响。结果表明:轴向力随着进给量的增加而增加,轴向力随着转速的增加而减
    小。运用指数公式模型对轴向力实验结果进行回归分析,得到轴向力与转速以及进给量之间的关系式,并对该
    方程进行了检验验证误差均小于7%;随着进给量的增加断屑能力逐渐增加,切屑长度逐渐变短。在低转速和
    进给量为50 mm/ min 时切屑形态为短螺旋形切屑,此时排屑和孔壁粗糙度均为最佳。

    Abstract:

    The drilling on titanium alloy (TC4) performance of TiAlN coated carbide twist drill was investigated
    focusing on the influence of cutting parameterson drilling axial force, surface roughness of hole wall and chip shape.
    The results showed that drilling axial force increases with the increase of feed rate. Drilling axial force increase with
    the decrease of speed. The exponential formula models of drilling force were obtained through regression analysis meth鄄
    od and the regulation of the drilling force about TC4 influenced by the feed and cutting speedwas obtained. The error of
    the equation has been tested less than 7%. With the increase of feed rate,chip breakability increase and chip length
    get shorter gradually. When feed rate is 50mm/ min and speed is low,chip morphology is short spiral chips, and chip
    removal and hole side roughness are the best

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胡立湘 李鹏南 陈明 邱新义. TiAlN 涂层钻头钻削钛合金的实验研究[J].宇航材料工艺,2016,46(2).

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  • 在线发布日期: 2016-11-28
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