Numerical modelling and analysis of the influence of an air cooling system on a milling machine in virtual environment

Perri, Gian Marco; Bräunig, Michael; Gironimo, Giuseppe Di; Pütz, Matthias; Tarallo, Andrea; Wittstock, Volker

doi:10.1007/s00170-015-8322-5

Cited by 19 publications

(5 citation statements)

References 18 publications

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“…However, the difference between them was very low, and it did not seem relevant. Perri et al [11] found that the effect of the cooling system and the flow air on the displacement of the tool centre point was less intense; this can explain the data obtained in the diameters, and the undersized holes obtained.…”

Section: Input Diametermentioning

confidence: 93%

“…Jozić et al [10] developed an experimental study, in which several machining aspects were analyzed in the milling process of a certain steel with this procedure at −34 • C under dry cutting conditions and also with the use of cutting fluid; it was found the most improved solution (less surface roughness, cutting forces, flank wear and more volume of removed material) in case of the application of cooling air during the process. In addition, regarding the milling processes, Perri et al [11] analyzed the effect of cooling air on the milling tool, using simulation models by FEM and experimental contrast and verifying important difference of temperatures reached respect to the procedure carried out without cooling air. On the other hand, Nor Khairusshima et al [12] studied the quality and the tool wear in the milling of the carbon fiber reinforced plastic with cooling air at −10 • C; they pointed out that the tool wear and delamination factor were improved at high cutting speeds.…”

Section: Introductionmentioning

confidence: 99%

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Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

2020

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This study is focused on the application of a cooling compressed air system in drilling processes; this environmentally friendly technique allows removing material at very low temperatures, approximately up to −22 °C in the cutting area. The main goals are to find the most improve cutting conditions with less energy consumption, for the drilling of reinforced polyether-ether-ketone with glass fiber at 30% (PEEK-GF30) with cooling compressed air by a Ranque-Hilsch vortex tube, and to find a balance between environmental conditions and adequate process performance. Drilling tests were carried out on plates of PEEK-GF30 to analyze the influence of cutting parameters and environmental temperature (–22, 0 and 22 °C) on variables such as thrust forces, energy and material removed rate by the use of statistical methods; analysis of variance, analysis of means, response surface, and desirability function were employed to identify the optimum region that provides the most improved values of the aforementioned variables. Drill bit diameter was also analyzed to determine the quality of drilled holes. During the drilling processes, force signals were detected by a piezoelectric dynamometer connected to multichannel amplifier and a pyrometer was used to control the temperature. The diameters of the drilled holes were measured by a coordinate measuring machine. Cooling compressed air can be considered an adequate technique to improve the results from an environmental and efficient perspective; in particular, the maximum desirability function was found at a spindle speed of 7000 rpm, a feedrate of 1 mm/rev and a temperature close to −22 °C.

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Section: Input Diametermentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

2020

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“…Dry cooling is the method that uses only air jets for cooling the cutting area. A model of heat distribution in the cutting area is presented, and the benefits such a model can offer are emphasized [6]. A special machining is micro milling: the collision force of the classic cooling jet might be as big, so it affects the cutting tool that is very slender.…”

Section: Introductionmentioning

confidence: 99%

Modular milling cutter with inner-cooling network

et al. 2021

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The big sized milling cutters are expensive tools and are not appropriate for small batches production. Making these tools more versatile, able to fit to different kinds of processes and shapes of the parts to be machined is a must. As well, cooling the cutting area is very important. The existing end-mill cutters are designed to feed internally with coolant only the teeth on the front side. The paper presents a concept of a modular tool, made of elementary disk cutters, able to be reconfigured to get different shapes and sizes. The main element of novelty the paper claims is the inner cooling system of the complex tool. The special design of the elementary milling cutters and of the shaft they are mounted on make the tool able to lead jets of coolant to every insert, no matter where they are placed, on the cylindrical or on the front side of the milling cutter. A network of channels drilled in the shaft and in the body of elementary milling cutters make this possible. The capability to splash with coolant under high pressure all the cutting edges do not depend on the number of teeth of the tool. Being delivered from inside the cutting tool, the coolant splashes directly on the contact surface between the inserts and workpiece, which makes cooling more efficient.

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“…Moreover, it is interesting to evaluate the benefits that can derive, for the study of 3D shapes of fragments initially not classifiable, from the use of automatic reconstruction and classification procedures [2][3][4]. The last ones can be included among the Virtual Prototyping Techniques widely spread from engineering to humanities fields [5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

A Statistical Approach to Simulate Instances of Archeological Findings Fragments

Renno¹,

Lanzotti²,

Papa³

2019

JAMRIS

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First aim of this paper is to describe a methodology developed to create virtual fragments of archeological archetypes in CAD (Computer Aided Design) environment. A simple Reverse Engineering (RE) technique was adopted to reconstruct the shape of vases allowing the archeologists, and so the CAD inexpert personnel, to use it. Moreover, another relevant aspect is the definition of a procedure to simulate shape errors on the virtual prototypes to make more realistic the results. The characteristics of the fragments to be reproduced were selected by means of Design of Experiment (DOE) techniques. So, an algorithm was implemented to simulate the shape error, related to the working operations, that represents the typical noise for the feature recognition of archeological findings. Furthermore, this algorithm can make more complex the hypotheses related to the Gaussian model of simulation of the error and can adapt the value of the shape error (i.e. increasing it) according to the data gathered in archaeological excavation. The case study was based on the definition of a catalogue of archetypes of the black Campanian vases studied and classified by the archeologist J.P. Morel. The procedure conceived was applied to five (among one hundred) vases of the virtual catalogue obtaining forty instances of fragments affected by errors and so creating virtual mock-ups of typical pieces which may be found in the archeological site considered for the case study.

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Numerical modelling and analysis of the influence of an air cooling system on a milling machine in virtual environment

Cited by 19 publications

References 18 publications

Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

Study of Drilling Process by Cooling Compressed Air in Reinforced Polyether-Ether-Ketone

Modular milling cutter with inner-cooling network

A Statistical Approach to Simulate Instances of Archeological Findings Fragments

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