Design and Test of a Multitooth Tool for CFRP Milling

Lacalle, Luis Norberto López de; Lamíkiz, Aitzol; Campa, Francisco J.; Valdivielso, A. FdZ.; Etxeberria, I.

doi:10.1177/0021998309345354

Cited by 94 publications

(58 citation statements)

References 15 publications

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“…Recently, Hintze et al [22] investigated machining CFRPs during slot milling experiments and observed that occurrence of delamination is closely related to tool wear and top layer fiber cutting angle. Lopez de Lacalle et al [23] studied the performance of multi-tooth cutting tools during the trimming process of CFRPs. They found that the performance of multi-tooth cutting tools with TiAlN coating was superior to straight edge PCD tools for finishing operations.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Karpat

Bahtiyar

Değer

2012

International Journal of Machine Tools and Manufacture

153

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a b s t r a c tCarbon fiber reinforced polymer (CFRP) usage in the aerospace industry has been steadily increasing due to its superior material properties such as high strength, low weight, high resistance to corrosion, and a low thermal expansion coefficient. In addition, CFRP parts are produced near-net-shape, a process that eliminates rough machining operations. However, machining operations such as drilling, side milling, and slotting are still necessary to give the CFRP parts their final shape. A majority of the studies on machining of CFRP laminates are on drilling. The number of studies on milling of CFRPs is quite limited. In this study, a mechanistic cutting force model for milling CFRPs is proposed based on experimentally collected cutting force data during slot milling of unidirectional CFRP laminates using two different polycrystalline diamond cutters. Cutting force coefficients in radial and tangential directions are calculated as a function of fiber cutting angle. The relationship is represented with simple sine functions. The mechanistic model is shown to be capable of predicting cutting forces during milling of multidirectional CFRP laminates. The experimental milling force measurements and predicted milling forces agree well with each other. Surface milling experiments were also conducted to investigate the relationship between milling forces and surface quality. Some suggestions on surface milling of CFRP laminates are given based on these observations.

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Section: Introductionmentioning

confidence: 99%

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Karpat

Bahtiyar

Değer

2012

International Journal of Machine Tools and Manufacture

153

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“…It is noted that the friction coefficient obtained in this work not only reflects the average friction behaviors but also illustrates the local relation between friction force and normal forces, like the maximum or minimum friction coefficient in Figure 4a. Compared with the results in this work, Lacalle et al [44] defined the specific coefficient Ks = Ftooth/(ap·fz), where Ftooth is the maximum cutting force, ap is the depth of worn surface, and fz is the tooth passing frequency), which is similar to the friction coefficient and reflects the maximum force during cutting.…”

Section: Effects Of Deep Cryogenic Treatment On Tribological Propertiesmentioning

confidence: 81%

Effects of Deep Cryogenic Treatment on the Microstructures and Tribological Properties of Iron Matrix Self-Lubricating Composites

Peng

Zhang

Chen

et al. 2018

Metals

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Abstract:The effects of deep cryogenic treatment on the microstructures and tribological properties of the self-lubricating iron matrix composites are investigated. The self-lubricating composites are deeply cryogenically treated at about −196 • C. The results show that with deep cryogenic treatment, the martensite phase transformation occurred from phase γ to α , and the fine particle carbides precipitated between martensites with the extension of cryogenic treatment time, measured by X-ray diffractometry (XRD) and scanning electron microscope (SEM). Compared with the as-sintered specimen, the maximum hardness of the specimens processed by cryogenic treatment increases by 172.8% from 253.2 HV to 690.7 HV. The materials with deep cryogenic treatment for 8 h show the best tribological properties, i.e., the average friction coefficient decreases by 75% from 0.36 to 0.09, and the wear coefficient decreases by 63% from 341 to 126 × 10 −6 mm 3 /Nm at 150 N and 8 mm/s. The improvement of the tribological property can be primarily attributed to the martensite phase transformation from γ to α and the precipitation of fine particles carbides between the martensites, which increase the hardness and the wear resistance after the cryogenic treatment.

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“…Unfortunately, the cost of PCD tools is six times higher than uncoated tools, whereas tool life is only three times longer. 8 End mills usually have a very special design suitable for the milling of CFRPs. 9 Helical end mills with two flutes are suitable for rigid or back-supported parts.…”

Section: Introductionmentioning

confidence: 99%

Cutting-tool performance in the end milling of carbon-fiber-reinforced plastics

Bílek¹,

Rusnáková²,

Žaludek³

2016

Mater. Tehnol.

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Carbon-fiber-reinforced plastics (CFRPs) are no longer the exclusive domain of aerospace industries and nowadays find more applications in the automotive and consumer industries. The growing volume of these materials increases the need for their efficient machining. However, the machinability of CFRPs is a rather complex task due to the heterogeneity and the considerable number of parameters influencing the cutting process. The cutting tool has long been recognized as an important factor influencing both surface quality and dimensional accuracy. Hence, in this paper, tool performance is investigated in the end milling of CFRPs. The effect of tool geometry and coatings on the cutting forces, dimensional accuracy and surface quality were experimentally examined for side and slot milling. Keywords: CFRP, composites, end mill, surface quality, cutting forces Plastika, oja~ana z ogljikovimi vlakni (CFRP), dosedaj ekskluzivna domena letalske industrije, se v zadnjem~asu bolj pogosto uporablja tudi v strojni{tvu, v avtomobilski industriji in v potro{ni{tvu. Z nara{~anjem uporabe teh materialov, nara{~a tudi potreba po u~inkoviti strojni obdelavi. Vendar pa je strojna obdelava CFRP-a precej kompleksna naloga zaradi heterogenosti in {tevilnih parametrov, ki vplivajo na proces rezanja. @e dolgo je znano, da je rezilno orodje pomemben faktor, ki vpliva na kvaliteto povr{ine in dimenzijsko natan~nost. Zato je v~lanku preiskovana zmogljivost orodja pri rezkanju plastike, oja~ane z ogljikovimi vlakni. Pri bo~nem in utorovnem rezkanju je bil preiskovan vpliv geometrije orodja in povr{inske prevleke na sile rezanja, dimenzijsko zanesljivost in na kvaliteto povr{ine.

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Design and Test of a Multitooth Tool for CFRP Milling

Cited by 94 publications

References 15 publications

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Mechanistic force modeling for milling of unidirectional carbon fiber reinforced polymer laminates

Effects of Deep Cryogenic Treatment on the Microstructures and Tribological Properties of Iron Matrix Self-Lubricating Composites

Cutting-tool performance in the end milling of carbon-fiber-reinforced plastics

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