Tool wear of coated drills in drilling CFRP

Wang, Xin; Kwon, Patrick; Sturtevant, Caleb; Kim, Dave Dae Wook; Lantrip, Jeff

doi:10.1016/j.jmapro.2012.09.019

Cited by 197 publications

(113 citation statements)

References 35 publications

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“…The literature suggested that the experiments may be conducted using the single drill bit for at least 25 holes [16,17,18]. Still for all experiments reported, except those in tool wear studies, the drill bit was changed after 3 holes to ensure that tool wear did not affect the machining results.…”

Section: Methodology Of Drilling Experimentsmentioning

confidence: 99%

Effect of ultrasonically-assisted drilling on carbon-fibre-reinforced plastics

Makhdum

Phadnis

Roy

2014

Journal of Sound and Vibration

108

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This research focuses on the effect of ultrasonically-assisted drilling (UAD) on carbon fibrereinforced plastics. High-frequency vibration was used to excite a drill bit during its standard operation. An extensive experimental study of drilling forces, temperature, chip formation, surface finish, circularity, delamination and tool wear, was conducted using Ø3 mm drill and presented here. UAD showed a significant improvement in drill quality when compared to conventional drilling processes. A finite-element study was also conducted to understand the nature of drilling-force reduction in UAD.

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Section: Methodology Of Drilling Experimentsmentioning

confidence: 99%

Effect of ultrasonically-assisted drilling on carbon-fibre-reinforced plastics

Makhdum

Phadnis

Roy

2014

Journal of Sound and Vibration

108

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“…Both TiO 2 and Al 2 O 3 layers are softer than the Ti-based coating itself. This decomposition is a downside of Ti-coatings and leads to increased wear of the coating [15].…”

Section: Methodsmentioning

confidence: 99%

Coating of Ultra-Small Micro End Mills: Analysis of Performance and Suitability of Eight Different Hard-Coatings

Bohley

Reichenbach

Kieren-Ehses

et al. 2018

JMMP

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Due to the constant need for better functionalized surfaces or smaller, function integrated components, precise and efficient manufacturing processes have to be established. Micro milling with micro end mills is one of the most promising processes for this task as it combines a high geometric flexibility in a wide range of machinable materials with low set-up costs. A downside of this process is the wear of the micro end mills. Due to size effects and the relatively low cutting speed, the cutting edge is especially subjected to massive abrasive wear. One possibility to minimize this wear is coating of micro end mills. This research paper describes the performance of eight different hard coatings for micro end mills with a diameter <40 µm and discusses some properties for the best performing coating type. With this research, it is therefore possible to boost the possibilities of micro milling for the manufacture of next generation products.

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“…However, some issues about occurring defects, such as fiber pullout, delamination, burrs, and splintering, have become problems in machining CFRP by common drills. These technical issues have led numerous researchers to seek solutions for precision machining of CFRP [20][21][22][23]. The key issue of precision machining of CFRP has been obtaining good hole quality in the aircraft industry.…”

Section: Applications Of Fgms Processed By the Centrifugal Sintered-cmentioning

confidence: 99%

New Processing Routes for Functionally Graded Materials and Structures through Combinations of Powder Metallurgy and Casting

Kunimine¹,

Sato²,

Miura-Fujiwara³

et al. 2016

Advances in Functionally Graded Materials and Structures

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New processing routes for metal-matrix functionally graded materials (FGMs) and structures through combinations of powder metallurgy and casting are described in this chapter. Centrifugal mixed-powder method is introduced as a processing method for metal-matrix FGMs at first. The centrifugal mixed-powder method is a developed technique of centrifugal casting by setting predesigned mixed powder in a spinning mold in advance. As an example of processed FGMs by this method in our previous studies, Cu-based FGMs with dispersed diamond particles are shown. Graded structures in the Cu-based FGMs are investigated through scanning electron microscope (SEM) observations of microstructures. As the latest processing method for metal-matrix FGMs developed by our research group, centrifugal sintered-casting method is shown. The centrifugal sintered-casting method is a modified processing technique of the centrifugal mixed-powder method. In the centrifugal sintered-casting method, FGMs are processed by the combination of centrifugal sintering and centrifugal casting. Al-Si alloy and Cu-based FGMs with dispersed diamond particles are introduced as examples. Applications of metal-matrix FGMs processed by the centrifugal sintered-casting method are also described. Fabricated metal-matrix FGMs can be used as grinding wheel and applied to carbon fiber-reinforced plastic (CFRP) machining.

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Tool wear of coated drills in drilling CFRP

Cited by 197 publications

References 35 publications

Effect of ultrasonically-assisted drilling on carbon-fibre-reinforced plastics

Effect of ultrasonically-assisted drilling on carbon-fibre-reinforced plastics

Coating of Ultra-Small Micro End Mills: Analysis of Performance and Suitability of Eight Different Hard-Coatings

New Processing Routes for Functionally Graded Materials and Structures through Combinations of Powder Metallurgy and Casting

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