Integration of dynamic behaviour variations in the stability lobes method: 3D lobes construction and application to thin-walled structure milling

Thevenot, Vincent; Arnaud, Lionel; Dessein, Gilles; Cazenave-Larroche, Gilles

doi:10.1007/s00170-004-2241-1

Cited by 95 publications

(51 citation statements)

References 11 publications

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“…Regarding the errors, little has been said about the uncertainty in the stability diagrams although several authors have recognized some inaccuracies [38]. Thevenot et al [35] studied the influence of some input parameters on the stability diagram, showing that the critical parameter is the modal frequency of the system. For the method proposed here, the main sources of error in the stability diagram calculation come from the modelling of the process, the tool-path discretization and the input parameters.…”

Section: Discussionmentioning

confidence: 99%

“…This work assumes the methodology originally proposed for thin walls milling by Thevenot et al [35], but a different stability diagram is proposed. The method follows these steps:…”

Section: Calculation Of Stable Spindle Speeds For Thin Floors Millingmentioning

confidence: 99%

“…The three-dimensional stability lobes proposed by Thevenot [35] and Bravo [23] add a third axis to the traditional lobes diagram, the tool position along the tool-path. Hence, it is possible to observe the evolution of the lobes shape during the machining due to the variation of the modal parameters.…”

Section: Stability Diagram Representationmentioning

confidence: 99%

See 2 more Smart Citations

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Campa

Lacalle

Celaya

2011

International Journal of Machine Tools and Manufacture

122

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The milling of thin parts is a high added value operation where the machinist has to face the chatter problem. The study of the stability of these operations is a complex task due to the changing modal parameters as the part losses mass during the machining and the complex shape of the tools that are used. The present work proposes a methodology for chatter avoidance in the milling of flexible thin floors with a bull-nose end mill. First, a stability model for the milling of compliant systems in the tool axis direction with bullnose end mills is presented. The contribution is the averaging method used to be able to use a linear model to predict the stability of the operation. Then, the procedure for the calculation of stability diagrams for the milling of thin floors is presented. The method is based on the estimation of the modal parameters of the part and the corresponding stability lobes during the machining. As in thin floor milling the depth of cut is already defined by the floor thickness previous to milling, it is proposed the use of stability diagrams that relate the tool position along the tool-path with the spindle speed. Hence, the sequence of spindle speeds that the tool must have during the milling can be selected. Finally, this methodology has been validated by means of experimental tests.

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Section: Discussionmentioning

confidence: 99%

“…This work assumes the methodology originally proposed for thin walls milling by Thevenot et al [35], but a different stability diagram is proposed. The method follows these steps:…”

Section: Calculation Of Stable Spindle Speeds For Thin Floors Millingmentioning

confidence: 99%

See 1 more Smart Citation

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Campa

Lacalle

Celaya

2011

International Journal of Machine Tools and Manufacture

122

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show abstract

“…In these zones, the part was able to be modelled with constant dynamic properties and with rigid body motion [12]. The stability lobe change during machining that lead to a third dimension on the stability lobe [13,14]. This approach was also extended by taking into account machine and tool flexibility [15].…”

Section: Introductionmentioning

confidence: 99%

Simulation of low rigidity part machining applied to thin-walled structures

Arnaud

Gonzalo

Seguy

et al. 2010

Int J Adv Manuf Technol

Self Cite

107

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible.Simulation of low rigidity part machining applied to thin-walled structuresAbstract The aim of this study is to evaluate the modelling of machining vibrations of thin-walled aluminium workpieces at high productivity rate. The use of numerical simulation is generally aimed at giving optimal cutting conditions for the precision and the surface finish needed. The proposed modelling includes all the ingredients needed for real productive machining of thin-walled parts. It has been tested with a specially designed machining test with high cutting engagement and taking into account all the phenomena involved in the dynamics of cutting. The system has been modelled using several simulation techniques. On the one hand, the milling process was modelled using a dynamic mechanistic model, with time domain simulation. On the other hand, the dynamic parameters of the system were obtained step by step by finite element analysis; thus the variation due to metal removal and the cutting edge position has been accurately taken into account. The results of the simulations were compared to those of the experiments; the discussion is based on the analysis of the cutting forces, the amplitude and the frequency of the vibrations evaluating the presence of chatter. The specific difficulties to perfect simulation of thin-walled workpiece chatter have been finely analysed.

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“…In the machining process of thin-walled structure, it can be observed that the dynamic behaviour of the tool workpiece system depends on the tool position in the workpiece. This phenomenon and the problem of the influence of several modes on stability lobes are discussed in [36]. On the other hand, modal interaction can affect surface roughness in milling thin-walled structures [33].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of thin-walled element milling expressed by recurrence analysis

Rusinek

Zaleski

2015

Meccanica

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This paper presents the results of experimental research on the stability of a milling process for producing a thin-walled part made of AL7075 aluminium alloy. The part was machined on a CNC milling machine with a decreasing wall thickness. The acceleration and cutting forces in the process were measured and analyzed to determine stability limit using classical stability diagrams as well as recurrence plots and recurrence quantification analysis.

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Integration of dynamic behaviour variations in the stability lobes method: 3D lobes construction and application to thin-walled structure milling

Cited by 95 publications

References 11 publications

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams

Simulation of low rigidity part machining applied to thin-walled structures

Dynamics of thin-walled element milling expressed by recurrence analysis

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