Investigation of cBN Electroplated End-Mill Shape for CFRP Machining
Investigation of cBN Electroplated End-Mill Shape for CFRP Machining
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CFRP 加工用 cBN 电镀立铣刀形状研究
DOI：
10.4028/www.scientific.net/msf.874.463
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
K. Fujiwara
中科院分区：
文献类型：
--
作者：
T. Furuki;T. Hirogaki;E. Aoyama;K. Ogawa;Kiyofumi Inaba;K. Fujiwara
目前，碳纤维增强塑料(CFRP)正越来越多地被应用于各个领域。因此，要求加工高精度、高效率的碳纤维复合材料。此外，还需要加工由碳纤维复合材料和钛合金组成的烟囱材料。因此，在本研究中，提出了一种新型的电镀立方氮化硼(CBN)磨料的端铣刀，该磨料具有较高的耐热性。为了评价所提出的立铣刀母材形状对加工过程的影响，制造了几种不同前倾角或倒角的CBN电镀立铣刀，并将其用于切割CFRP。此外，为了评价磨料的形状，还在立铣刀上电镀了一层块状磨料。结果表明，负前倾角有利于抑制刀具磨损的发展。然而，为了获得切割和磨削的元素，要求前倾角为正。此外，合理的倒角宽度可以有效地抑制CFRP温度的升高。此外，与块状磨料相比，锋利形状的磨料可以更有效地产生具有锋利边缘的CFRP。
Currently, carbon fiber reinforced plastics (CFRP) are being increasingly adopted in various fields. Thus, machining CFRP with high accuracy and high efficiency is required. In addition, machining stack materials composed of CFRP and titanium alloys is required. Therefore, in this study, a novel end-mill electroplated with a cubic boron nitride (cBN) abrasive, which has high thermal resistance, is proposed. In order to evaluate the influence of the base metal shape of the proposed end-mill on the machining process, several cBN-electroplated end-mills with different rake angles or chamfers were fabricated and used to cut CFRP. In addition, in order to evaluate the abrasive shape, a blocky abrasive was also electroplated on the end-mill. The results indicate that the negative rake angle is useful to restrain the progression of tool wear. However, in order to obtain the element of cutting and grinding, it is required that the rake angle should be positive. Moreover, the reasonable width of chamfer is effective for restraining the increase in CFRP temperature. Further, a sharp shaped abrasive can more effectively generate a CFRP with a sharp edge compared with a blocky shape abrasive.