Comparison of linear and trochoidal milling for wear and vibration reduced machining

Gross, Daniel; Friedl, Fabian; Meier, Trixi; Hanenkamp, Nico

doi:10.1016/j.procir.2020.01.069

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…The milled part has concave and convex walls. While the values of the radius of these walls are not constant, this situation is closer to reality and can be consider a novelty compared to previous tests with trochoidal milling [24][25][26][27]. The point with coordinates (x i , y i ) belongs to the arch of one of the trochoidal steps (Figure 15).…”

mentioning

confidence: 67%

Trochoidal Milling Path with Variable Feed. Application to the Machining of a Ti-6Al-4V Part

García-Hernández

Garde-Barace²,

Valdivia-Sánchez³

et al. 2021

Mathematics

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Trochoidal milling is a well-stablished machining strategy which still allows for the introduction of new approaches. This strategy can be applied to any kind of material, although it is usually associated to advanced materials, such as titanium and nickel alloys. This study is based on the adaptation of the feed speed of a milling tool with Ti-6Al-4V, so the chip width can be maintained constant without modifying the path geometry. A singularity in the experimental stage was to mill an Archimedes spiral groove instead of the conventional straight grooves. This made it possible to obtain a concave wall as well as a convex one and to optimize the amount of material used. The time efficiency compared to a constant feed, was slightly superior to 20%, reducing tool wear also. These techniques require milling machines with high mechanical and kinematic performance, as well as the absence of clearance between joints and a high acceleration capacity.

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mentioning

confidence: 67%

Trochoidal Milling Path with Variable Feed. Application to the Machining of a Ti-6Al-4V Part

García-Hernández

Garde-Barace²,

Valdivia-Sánchez³

et al. 2021

Mathematics

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“…Therefore, dividing the profile of the slot into a few parts and machining the subsequent sides and bottom of the slot was proposed [ 63 , 64 , 65 , 66 ]. Surface roughness after milling depending on the machining strategy is usually in the range of approximately Rz 2.1 μm to 5.9 μm [ 67 , 68 , 69 ].…”

Section: Methods Of Manufacturing Fir Tree Slots Of the Turbine Discsmentioning

confidence: 99%

“…Jianhua et al noticed that milling in a single machining pass may lead to sub the cutter to very high thermal loads and, as a result, accelerated tool wear (Figu Therefore, dividing the profile of the slot into a few parts and machining the subse sides and bottom of the slot was proposed [63][64][65][66]. Surface roughness after milli pending on the machining strategy is usually in the range of approximately Rz 2.1 5.9 μm [67][68][69]. Jianhua et al noticed that milling in a single machining pass may lead to subjecting the cutter to very high thermal loads and, as a result, accelerated tool wear (Figure 18).…”

Section: Millingmentioning

confidence: 99%

“…the cutter to very high thermal loads and, as a result, accelerated tool we Therefore, dividing the profile of the slot into a few parts and machining t sides and bottom of the slot was proposed [63][64][65][66]. Surface roughness af pending on the machining strategy is usually in the range of approximate 5.9 μm [67][68][69]. Hence, Klocke et al proposed the use of additional milling cutters to remove a significant amount of machining allowance in roughing machining (pre-slotting).…”

Section: Millingmentioning

confidence: 99%

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The Review of Current and Proposed Methods of Manufacturing Fir Tree Slots of Turbine Aero Engine Discs

2023

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This review article presents a summary of currently used and proposed methods of manufacturing fir tree slots of discs in turbine engines. The production of aircraft, including aircraft engines during times of overlapping global economic crises related to the COVID-19 pandemic or the war in Eastern Europe requires a quick response to the changing numbers of passengers and cargo. Similarly, the aviation industry must adapt to these conditions, and thus utilize flexible production methods allowing for a quick change in the design or type of a given part. Due to the constant adoption of new materials for the most critical aero engine parts and the necessity of complying with environmental regulations, it is necessary to search for new methods of manufacturing these parts, including fir tree slots. As an alternative to currently used expensive and energy-intensive broaching, many manufacturers try to implement creep feed grinding CFG or contour milling. However, other manufacturing methods, thus far rarely used for crucial machine parts such as WEDM, ECDM or AWJ, are gaining more and more popularity in the aviation industry. This article presents the advantages and shortcomings of these methods in the context of manufacturing fir tree slots.

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“…Jerzy et al studied cycloidal milling of aluminum alloys [3][4][5], establishing a functional relationship between torque, roughness parameters. Daniel et al did a study of conventional milling versus cycloidal milling in terms of wear and vibration [6] and proved that cycloidal milling is not a suitable approach to reduce vibration and tool wear.…”

Section: Introducementioning

confidence: 99%

Trochoidal milling chip thickness model based on real trajectory

Zhou

Zhang

2022

J. Phys.: Conf. Ser.

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With the progress of science and technology industrial development on the use of parts performance and requirements continue to improve, difficult-to-machine materials are more and more widely used, in order to better predict the difficult-to-machine materials milling process cutting force and other parameters, the traditional equivalent chip thickness can no longer meet the calculation accuracy, so it is necessary to describe the chip thickness according to the real trajectory of the cutting edge, using the numerical solution method to find out the intersection between the tool track and the tool track. Thus, the chip geometry during milling is obtained, the instantaneous chip thickness is obtained by solving the transcendental equation, and the chip thickness model is numerically simulated, and finally the chip thickness model in this paper is compared with the traditional chip thickness model, and it is found that this model can better reflect the chip thickness in the machining process.

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Comparison of linear and trochoidal milling for wear and vibration reduced machining

Cited by 8 publications

References 6 publications

Trochoidal Milling Path with Variable Feed. Application to the Machining of a Ti-6Al-4V Part

Trochoidal Milling Path with Variable Feed. Application to the Machining of a Ti-6Al-4V Part

The Review of Current and Proposed Methods of Manufacturing Fir Tree Slots of Turbine Aero Engine Discs

Trochoidal milling chip thickness model based on real trajectory

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