Proposal of a tilted helical milling technique for high quality hole drilling of CFRP: kinetic analysis of hole formation and material removal

Wang, Qiang1,2; Wu, Yongbo1,2; Bitou, Teruo1; Nomura, Mitsuyoshi1; Fujii, Tatsuya1

2018-02

10.1007/s00170-017-1106-3

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY   影响因子和分区

0268-3768

1433-3015

Carbon fiber reinforced plastic (CFRP) is used for various mechanical structures because of its superior mechanical and physical properties. Industrial applications of CFRP require high quality, efficiently drilled holes. However, it is difficult for conventional methods, such as drilling, helical milling, and so on to meet industry requirements. Therefore, this study proposed a novel method for drilling holes in CFRP products. This new method is performed by replacing the revolving motion of the tool in conventional helical milling (CHM) with conical pendulum motion, in which the tool axis is tilted toward the hole axis at a certain angle, consequently called tilted helical milling (THM). As a step toward the establishment of the new method, in this work, the hole formation process, the cross-sectional area of work materials removed per tool revolution, and the zero cutting speed point problem in THM were theoretically compared with those in CHM. Then, experiments were performed to confirm the theoretical analysis in terms of the variations in the cross section profile of the drilled hole, the drilling forces, the hole quality at entrance/exit, and the chip removal. The obtained results revealed that during hole drilling by THM, a circumferential V-groove exists between the end face of the tool and the bottom of the hole, whereas in CHM, this phenomenon does not occur. This fact is beneficial to timely chip removal, drilling force reduction, and zero cutting speed point problem avoidance. Subsequently, high quality holes can be successfully obtained with high efficiency by THM.

CFRP Helical milling Tilted helical milling Drilling force Zero cutting speed point

SCI ; CPCI-S ; EI

英语

通讯

National Natural Science Foundation of China[51405218]

Automation & Control Systems ; Engineering

Automation & Control Systems ; Engineering, Manufacturing

WOS:000425592900093

SPRINGER LONDON LTD

20174004228141

Carbon fiber reinforced plastics ; Cladding (coating) ; Cutting ; Fiber reinforced plastics ; Milling (machining)

Machining Operations:604.2 ; Polymer Products:817.1 ; Quality Assurance and Control:913.3

ENGINEERING

Web of Science

1.Akita Prefectural Univ, Dept Machine Intelligence & Syst Engn, Akita 0150055, Japan
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China

Wang, Qiang,Wu, Yongbo,Bitou, Teruo,et al. Proposal of a tilted helical milling technique for high quality hole drilling of CFRP: kinetic analysis of hole formation and material removal[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2018,94(9-12):4221-4235.

Wang, Qiang,Wu, Yongbo,Bitou, Teruo,Nomura, Mitsuyoshi,&Fujii, Tatsuya.(2018).Proposal of a tilted helical milling technique for high quality hole drilling of CFRP: kinetic analysis of hole formation and material removal.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,94(9-12),4221-4235.

Wang, Qiang,et al."Proposal of a tilted helical milling technique for high quality hole drilling of CFRP: kinetic analysis of hole formation and material removal".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 94.9-12(2018):4221-4235.