Wear of One-shot Drill Bit in Drilling CFRP and Novel Method for Tool Wear Reduction

被引：1

作者：

Wang F. ^{[1
]}

Qian B. ^{[1
]}

Cheng D. ^{[1
]}

Jia Z. ^{[1
]}

Fu R. ^{[1
]}

Yin J. ^{[1
]}

机构：

[1] Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2018年 / 54卷 / 15期

关键词：

Carbon fiber reinforced plastics (CFRP); Cutting edge dulling; Hole surface quality; Minimum quantity lubrication (MQL); Secondary cutting edge;

D O I：

10.3901/JME.2018.15.171

中图分类号：

学科分类号：

摘要：

In order to satisfy high quality requirements of drilled holes on high strength carbon fiber reinforced plastics (CFRP) structural parts, one-shot drill bit is currently utilized in drilling CFRP. However, due to the special step-drilling (including pre-drilling, chambering and reaming) geometry of the one-shot drill bit, the wear status of secondary cutting edges determines the final hole surface quality. Also on account of high abrasiveness of carbon fibers, the drill bit suffers quick tool wear and the cutting edges usually encounter edge dulling, which leads to subsequent serious hole surface defects. By applying cutting edge rounding to characterize the dullness of the cutting edge, the results show the secondary cutting edge is prone to dulling at initial drilling stage, and then it is reground and re-sharpened. On the basis of tool wear analysis, the paper investigates the impacts of edge dulling on drilled hole surface defects under different fiber cutting angles. Finally by creatively designing internal coolant holes at specific position on the secondary cutting edge and applying minimum quantity lubrication (MQL), the dulling wear of secondary cutting edge is effectively reduced and hole surface quality is greatly improved. The study paves the way for the research on tools and processes of drilling CFRP with high quality. © 2018 Journal of Mechanical Engineering.

引用

页码：171 / 179

页数：8

共 24 条

[1]

Liu D.F., Tang Y.J., Cong W.L., A review of mechanical drilling for composite laminates, Composite Structures, 94, 4, pp. 1265-1279, (2012)

[2]

Abrao A.M., Faria P.E., Rubio J.C.C., Et al., Drilling of fiber reinforced plastics: A review, Journal of Materials Processing Technology, 186, 1, pp. 1-7, (2007)

[3]

Chen Y., Ge E., Fu Y., Et al., Review and prospect of drilling technologies for carbon fiber reinforced polymer, Acta Materiae Compositae Sinica, 32, 2, pp. 301-316, (2015)

[4]

Ma L., Zhang J., Yue G., Et al., Application of composites in new generation of large civil aircraft, Acta Materiae Compositae Sinica, 32, 2, pp. 317-322, (2015)

[5]

Xu J., Cai X., Wei Y., Et al., Defects study on drilling of high-strength T800S/250F CFRP laminates, Manufacturing Technology & Machine Tool, 3, pp. 97-101, (2013)

[6]

Faraz A., Biermann D., Weinert K., Cutting edge rounding: An innovative tool wear criterion in drilling CFRP composite laminates, International Journal of Machine Tools and Manufacture, 49, 15, pp. 1185-1196, (2009)

[7]

Gaugel S., Sripathy P., Haeger A., Et al., A comparative study on tool wear and laminate damage in drilling of carbon-fiber reinforced polymers (CFRP), Composite Structures, 155, pp. 173-183, (2016)

[8]

Fernandes M., Cook C., Drilling of carbon composites using a one shot drill bit. Part I: Five Stage Representation of Drilling and Factors Affecting Maximum Force and torque, International Journal of Machine Tools and Manufacture, 46, 1, pp. 70-75, (2006)

[9]

Merino-Perez J.L., Royer R., Merson E., Et al., Influence of workpiece constituents and cutting speed on the cutting forces developed in the conventional drilling of CFRP composites, Composite Structures, 140, pp. 621-629, (2016)

[10]

Xu J., An Q., Chen M., A comparative evaluation of polycrystalline diamond drills in drilling high-strength T800S/250F CFRP, Composite Structures, 117, pp. 71-82, (2014)

← 1 2 3 →