南京航空航天大学学报（英文版）2025，Vol.42Issue(3)：310-321,12.DOI:10.16356/j.1005-1120.2025.03.004
金刚石涂层钻头微孔啄钻氧化锆陶瓷试验研究
Experimental Study on Peck Drilling of Micro-holes in Fully Sintered Zirconia Ceramics Using Diamond-Coated Drill Bits
摘要
Abstract
Zirconia(ZrO2)ceramic material has been widely applied to various fields due to its unique properties of high strength,high hardness,and excessive temperature resistance.However,the high-quality micro-hole machining of zirconia ceramic material remains a significant challenge at present.In this study,experiments on peck drilling of Ø0.2 mm and Ø0.5 mm micro-holes in zirconia ceramics using diamond-coated drills are conducted.The characteristics of the force signal during the drilling process,the influence of drilling parameters on the drilling force and the chipping size at the hole exit,and features of the tool wear stages of the diamond coated drill are analyzed.Experimental results suggest that when machining micro-holes in zirconia ceramics,there is a positive correlation between the axial force and the size of the chipping at the exit.The axial force increases with the increase of the feed rate and the step distance,and it shows a trend of first increasing and next decreasing with the increase of the spindle speed.The wear of the drill bit has a significant impact on the quality of the hole exit.It is found that with the continuous drilling of seven holes,the axial force increases by 144.2％,and the size of edge chipping at the exit increases from about 20 μm to more than 130 μm.This study can provide some valuable references for improving the micro-hole processing quality of material.关键词
氧化锆陶瓷/金刚石涂层/啄钻/崩边/刀具磨损Key words
zirconia ceramics/diamond-coated/peck drilling/chipping/tool wear分类
矿业与冶金引用本文复制引用
卞荣,周君威,丁文政,KHAN Aqib Mashood,徐有峰,陈妮..金刚石涂层钻头微孔啄钻氧化锆陶瓷试验研究[J].南京航空航天大学学报（英文版）,2025,42(3):310-321,12.基金项目
This work was supported by the Na-tional Natural Science Foundation of China(Nos.51805242,52475463).The authors would like to acknowledge the fol-lowing people for their assistance:HU Jinlong,LI Siying and TANG Xiao. （Nos.51805242,52475463）
