Chatter identification in milling of Inconel 625 based on recurrence plot technique and Hilbert vibration decomposition

Lajmert, Paweł; Rusinek, Rafał; Kruszyński, Bogdan

doi:10.1051/matecconf/201814809003

Cited by 7 publications

(5 citation statements)

References 17 publications

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“…A very important factor that has a direct impact on the durability of cutting tools is the amount of heat generated in the machining zone. This aspect has been widely studied [40][41][42]. Based on the literature review, it was found that not only the cutting parameters should be selected in such a way as to obtain the highest efficiency, but also that the temperature values generated in the machining zone should be taken into account.…”

Section: Tool-life Testingmentioning

confidence: 99%

Influence of machining parameters on the polymer concrete milling process

Kępczak

Zgórniak

Lajmert

et al. 2020

Int J Adv Manuf Technol

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The paper examines the wear of end mill cutters, the parameters of a workpiece's surface layer and the values of cutting forces during the machining of polymer concrete, which is one of the most difficult-to-cut materials. Increased abrasive wear of the active cutting edges is a result of the heterogeneous structure of this material, and it has a negative effect on the cutting process, the durability of the cutting tools as well as the roughness of the workpiece. It is very important to determine the machining parameters for this material from a tool durability and quality of machining point of view. The research was divided into two stages. In the first stage, the appropriate machining parameters were determined based on the measurement of the components of the cutting force. In the second stage, durability tests of four end mill cutters were carried out. During the tests, the component cutting forces, tool wear and surface roughness were measured. The highest tool durability was recorded for the monolithic cemented carbide cutter with coating NC Mill G9F42120N 4F. Tools made of high-speed steel should not be used for machining polymer concrete, as they exhibited the highest intensity of tool wear. The rapid loss of machinability of these tools leads to a rapid increase in cutting force and the roughness of the machined surface. From an economic point of view, cemented carbide end mill cutters with coatings seem to be the appropriate choice for machining polymer concrete.

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Section: Tool-life Testingmentioning

confidence: 99%

Influence of machining parameters on the polymer concrete milling process

Kępczak

Zgórniak

Lajmert

et al. 2020

Int J Adv Manuf Technol

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“…A new methodology was developed for the inclusion of vibration analysis and the consideration of energy efficiency in the design of face-milling processes. Furthermore, Lajmert et al studied the stability of the milling process [ 38 , 39 ]. They used various methods to identify instability during the real machining process based on the Hilbert and Hilbert–Huang vibration decomposition methods.…”

Section: Introductionmentioning

confidence: 99%

Modelling of the Face-Milling Process by Toroidal Cutter

2023

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When face milling using a toroidal cutter, with a change in the depth of the cut, the entering angle varies as well. An experimental test of the influence of cutting parameters, such as the depth of the cut and the feed per tooth on the cutting force components and surface roughness parameters, was conducted. The experimental test was carried out using a DMU 100 monoBLOCK CNC machine with registration of cutting force components and surface roughness parameters Ra, Rz, and RSm. FEM analysis of the face-milling process was also carried out and compared with the experimental results. The average deviation of the FEM values for cutting force components does not exceed 12%. Experimental models were established for each force component. It was shown that the depth of the cut has the strongest influence on each force component. The feed per tooth has a little impact on the cutting force. The obtained model of the feed force component is the most complex, and the model of the Fa component is only linear. The influence of the ap parameter on the surface roughness parameters is nonlinear and nonmonotonic. In the range of approx. ap = 2 mm, there is a maximum surface roughness.

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“…Figure 1b-d presents the types of face milling with an entering angle below 90 • . In the case of milling with the use of a toroidal which entails the necessity of reducing milling efficiency and may pose an increased risk of an occurrence of machining vibrations [10,11]. Figure 1b-d presents the types of face milling with an entering angle below 90°.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of face milling with an entering angle of 90° ( Figure 1 a), the direction of the cutting force is radial [ 8 , 9 ]. The stiffness of the tool in the radial direction is low, which entails the necessity of reducing milling efficiency and may pose an increased risk of an occurrence of machining vibrations [ 10 , 11 ]. Figure 1 b–d presents the types of face milling with an entering angle below 90°.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Face Milling of 42CrMo4 Steel: Influence of Entering Angle on the Measured Surface Roughness, Cutting Force and Vibration Amplitude

et al. 2021

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High feed Milling is a new milling method, which allows to apply high feed rates and increase machining efficiency. The method utilizes face cutters with a very small entering angle, of about 10°–20°. Thus, the cut layer cross-section is different than in traditional milling. In order to examine the high feed milling (HFM), experimental tests were conducted, preceded by an analysis of cutting zones when milling with an HF face cutter. The face milling tests of 42CrMo4 steel with the use of an HF cutter characterized by an entering angle, dependent on axial depth of cut ap and insert radius r values, as well as with a conventional face cutter with the entering angle of 45° were performed. The study focused on analyzing the vibration amplitude, cutting force components in the workpiece coordinate system, and surface roughness. The experimental tests proved, that when milling with constant cut layer thickness, the high feed cutter allowed to obtain twice the cutting volume in comparison with the conventional face cutter. However, higher machining efficiency resulted in an increase in cutting force components. Furthermore, the results indicate significantly higher surface roughness and higher vibration amplitudes when milling with the HF cutter.

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Chatter identification in milling of Inconel 625 based on recurrence plot technique and Hilbert vibration decomposition

Cited by 7 publications

References 17 publications

Influence of machining parameters on the polymer concrete milling process

Influence of machining parameters on the polymer concrete milling process

Modelling of the Face-Milling Process by Toroidal Cutter

High-Performance Face Milling of 42CrMo4 Steel: Influence of Entering Angle on the Measured Surface Roughness, Cutting Force and Vibration Amplitude

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