Size limitations and wear behavior of TiB2 coated micro end mills (Ø &lt; 50 µm) when machining cp-titanium

Bohley, Martin; Kieren-Ehses, Sonja; Heberger, Lukas; Kirsch, Benjamin; Aurich, Jan C.

doi:10.1016/j.procir.2018.05.095

Cited by 10 publications

(6 citation statements)

References 7 publications

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“…However, this depends on the material that is being machined and on the parameters that are trying to be achieved, such as a better MRR or a better surface finish quality. In the study presented in [30], a comparison of uncoated and TiAlN-coated tungsten carbide micro-end mills are made when machining Nimonic 75 in order to evaluate the machining characteristics of this material. The cutting performance was determined by the authors, taking into consideration tool wear, slot geometry, buff formation and surface roughness.…”

Section: Coatings For Milling Toolsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances on Coated Milling Tool Technology—A Comprehensive Review

Sousa

Silva

2020

Coatings

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The milling process is one of the most used processes in the manufacturing industry. Milling, as a process, as evolved, with new machines and methods being employed, in order to obtain the best results consistently. Milling tools have also seen quite an evolution, from the uncoated high-speed steel tool, to the now vastly used, coated tools. Information on the use of these coated tools in recent scientific researches was collected. The coatings that are currently being researched are going to be presented, highlighting some novel advances in the nanocomposite and diamond coatings area, as these coatings are seeing a growing use in the industry, with very satisfactory results, with performance and tool-life increase. Wear mechanism of various types of coatings are also a popular topic on recent research, as the cutting behavior of these coated tools provides valuable information on the tool’s-life. Furthermore, analysis of these mechanisms enables for the selection of the best coating type for the correct application. Recently, the employment of coated tools paired with sustainable lubrication methods as seen some use. As this presents the opportunity to enhance the coated tool’s and the process’s performance, obtaining better results, in terms of better tool-life and better surface finish quality, in a more sustainable fashion.

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Section: Coatings For Milling Toolsmentioning

confidence: 99%

“…Furthermore, they can be deposited in tool steel with good adhesive capabilities [28,29]. These boride coatings see application in machining processes that are characterized by high amounts of friction, such as micro milling [30]. One of the most widely used oxide coatings is Al 2 O 3 .…”

Section: Coatings For Milling Toolsmentioning

confidence: 99%

Recent Advances on Coated Milling Tool Technology—A Comprehensive Review

Sousa

Silva

2020

Coatings

View full text Add to dashboard Cite

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“…At this time, it was possible to precisely measure the profile of the cutting edge and radius reduction of the tool with the pickup of the roughness testing machine for surface roughness measurement [ 20 ]. It could be noted that most studies on tool wear [ 15 , 16 , 17 , 18 , 19 ] evaluate tool wear based on cutting edge observation; however, the method presented herein has the ability to measure details of the tool edge shape. Furthermore, the positions of the cutting edges in the axial direction of the tool were measured at five locations where the workpieces were actually machined, as this is necessary to obtain the flank wear width

compared with the nose shape of the cutting edge, which was not interfered with the workpiece.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…However, these models were only able to explain the initial condition of the cutting tool, whereas the actual machining phenomena changes with the tool wear continued to progress. M. Bohley et al [ 15 ] and C. Bandapalli et al [ 16 ] conducted a study on the conditions around tool wear during the micro end milling of a Ti-alloy, and I. G. Reichenbach [ 17 ] showed tool life criteria and the wear behavior of single-edge ultra-small micro end mill for polymethyl methacrylate. Moreover, K. Vipindas [ 18 ] and L. Alhadeff [ 19 ] investigated changes in machining performance considering tool wear in a Ti-alloy and brass, respectively, and N. Swain [ 20 ] experimentally studied the machining characteristics of a Ni-alloy using micro end mills.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation on Micro End Milling with High-Speed Up Cut Milling for Hardened Die Steel

Kino¹,

Imada²,

Ogawa

et al. 2020

Materials

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The importance of micromachining using small diameter end mills and the dies used for them has been increasing in the machining of small parts. However, the reality is that there are various requirements to improve the machining surface, machining accuracy, machining efficiency, and tool life. Therefore, this paper discusses the possibility of satisfying these requirements by high-speed up cut milling in side cutting. The goal of this study was to solve the aforementioned problems, by conducting a detailed analysis of the machining phenomena in order to understand their mechanisms. In particular, the effects of high-speed cutting using a high-speed air-turbine spindle with highly stiff rolling bearings were analyzed. Moreover, cutting experiments were conducted by measuring the cutting force and flank wear of the tool, to reveal the differences in the cutting phenomena relative to the cutting direction in high-speed micro end milling. Description of the machined surface and the measurement of its profile were also included in the discussions. On the basis of the results, high-speed up cut milling is a better choice than down cut milling; furthermore, a high-feed rate further increases machining efficiency and improves tool life.

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“…Single-edged micro end mills and micro drills are usually made out of cemented carbide and are used to machine a wide range of ductile materials. Micro end mills are microstructuring tools that are available in various geometrical shapes and can be scaled down to diameters of less than 6 μm [5], while micro drills can be scaled down to 5 μm [6].…”

Section: Introductionmentioning

confidence: 99%

Submerged micro grinding: a metalworking fluid application study

Arrabiyeh

Heintz

Kieren-Ehses

et al. 2020

Int J Adv Manuf Technol

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Micro machining with micro pencil grinding tools (MPGTs) is an emerging technology that can be used to manufacture closed microchannel structures in hard and brittle materials as well as hardened steels like 16MnCr5. At their current operating conditions, these tools have a comparatively short tool life. In previous works, MPGTs in combination with a minimum quantity lubrication (MQL) system were used to manufacture microchannels in 16MnCr5 hardened steel. The study has shown that steel adhesions clog the abrasive layer of MPGTs, most likely resulting from insufficient lubrication. In this paper, a metalworking fluid (MWF) supply method was developed to improve the process: a submerged micro grinding process, in which machining takes place inside a pool of MWF. In this study, the effect of seven types of MWFs on material adhesions at the bottom surface of the tool is evaluated. Equivalent good MWFs are then compared in a micro pendulum grinding experiment till failure.

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Size limitations and wear behavior of TiB2 coated micro end mills (Ø < 50 µm) when machining cp-titanium

Cited by 10 publications

References 7 publications

Recent Advances on Coated Milling Tool Technology—A Comprehensive Review

Recent Advances on Coated Milling Tool Technology—A Comprehensive Review

An Experimental Investigation on Micro End Milling with High-Speed Up Cut Milling for Hardened Die Steel

Submerged micro grinding: a metalworking fluid application study

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