Bionic surface design of cemented carbide drill bit

作     者：YANG XiaoFeng XIA Re ZHOU HongWei GUO Lu ZHANG LiJun 

作者机构：School of Mechanics and Civil EngineeringChina University of Mining and Technology(Beijing)Beijing 100083China Suzhou Institute of Wuhan UniversitySuzhou 215123China School of Power and Mechanical EngineeringWuhan UniversityWuhan 430072China State Key Laboratory of Shield Machine and Boring TechnologyZhengzhou 450001China 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51204122&51134018) the Natural Science Foundation of Jiangsu Province(Grant No.BK20140411) State Key Laboratory of Mechanics and Control of Mechanical Structures(Nanjing University of Aeronautics and Astronautics MCMS-0414Y01) the National Basic Research Program of China(“973”Project)(Grant No.2014CB239203) the 111 Project(Grant No.B14006) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2016年第59卷第1期

页      码：175-182页

摘      要：The development of a high-performance cemented carbide drill bit is of great significance to the reduction of rock drilling-cost. The non-smooth features of a biological surface provide an insight into how they can obtain low friction and good wear resistance with evolving surface morphology. By analyzing the mechanism of the surface of a dung beetle for reducing soil wear and adherence, we design a cemented carbide drill bit with a bionic surface, which is expected to have superior anti-wearing and anti-sticking properties for drilling the soft coal seam. Inspired from the characteristics of the head and pronotum surface of the dung beetle, optimized non-smooth surface of the drill bit was constructed. The working performance of this innovative drill was experimentally tested. With comparative experiments under the identical drilling conditions, the wear rates, drilling times of conventional drills and bionic drills were measured. Compared with the conventional counterpart, the drill designed exhibits better performance in reducing wear and sticking drilling-breaks, therefore achieving higher levels of efficiency. The diameter of the dome and pit on the bit surface is in the range of 0.8–1.2 mm, and the bionic drill bits could get better performance with preferable drilling speeds and wear rates.

主 题 词：cemented carbide drill bit surface bionic design dung beetle friction 

学科分类：1305[艺术学-设计学类] 13[艺术学] 08[工学] 0802[工学-机械学] 080201[080201] 

核心收录：

D　O　I：10.1007/s11431-015-5942-9

馆 藏 号：203119746...