摘要
碳纤维增强复合材料(CFRP)是一种典型的难加工材料,文章利用化学气相沉积(CVD)金刚石涂层刀具以及Kistler 9129AA型测力仪,基于单因素实验法,探索了切削参数对CFRP加工过程中切削力、工件表面质量、刀具磨损的影响。实验结果显示:提高主轴转速可有效降低CFRP加工时的切削力,但随着切削深度和进给量的增加,切削力仍显著增加;CVD金刚石涂层刀具在切削42 m后,涂层出现剥落,主要原因是刀具表面与切屑产生磨粒磨损,并且刀具硬质合金基体与涂层热膨胀系数不同,在刀具温度升高的情况下使涂层出现裂纹,加快了涂层的剥落;如果想获得较好的表面质量和更少的加工缺陷,应该选用顺铣、大转速、小进给量及小切削深度。
Carbon fiber reinforced polymer(CFRP) is a typical difficult-to-machine material. Based on the single factor experiment method, the influence of cutting parameters on cutting force, surface quality of work-piece and tool wear during CFRP machining process is explored for by chemical vapor deposition(CVD) diamond coated tool and Kistler 9129 AA dynamometer. The experimental result shows that increase of the spindle speed can effectively reduce the cutting force during CFRP machining, but with the increase of cutting depth and feed rate, the cutting force increases significantly as well. After cutting for 42 m, the coating of CVD diamond coated tool peels off, which is mainly due to the abrasive wear between the tool surface and the chip, and the different thermal expansion coefficient between the tool cemented carbide matrix and the coating layer. When the tool temperature rises, the coating layer cracks and accelerates the peeling off of the coating layer. If it is expected to obtain better surface quality and less machining defects, it is necessary to choose down milling, high speed, small feed and small cutting depth.
作者
吴春彦
徐袁洪
王康
张韬
彭广盼
薛喆
WU Chunyan;XU Yuanhong;WANG Kang;ZHANG Tao;PENG Guangpan;XUE Zhe(School of Mechanical Technology,Wuxi Vocational and Technical College,Wuxi 214122,China;Zhangjiagang Weina New Material Technology Co.,Ltd.,Suzhou 215600,China)
出处
《超硬材料工程》
CAS
2022年第4期14-20,共7页
Superhard Material Engineering
基金
江苏省自然科学基金(No.BK20201142)
国家青年自然科学基金(51605280)。
作者简介
第一作者:吴春彦(2002-),男,在读本科。E-mail:2877219662@qq.com,1040173117@wxit.edu.cn;通信作者:张韬(1984-),男,副教授,主要从事CVD金刚石的制备及应用研究。
