Active suppression of structural chatter vibrations using machine drives and accelerometers

Muñoa, Jokin; Beudaert, Xavier; Erkorkmaz, Kaan; Iglesias, Alex; Barrios, Asier; Zatarain, Mikel

doi:10.1016/j.cirp.2015.04.106

Cited by 67 publications

(28 citation statements)

References 10 publications

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“…It belongs to the wider group of vibration reduction methods that utilize spindle speed variation [10,11], or matching the spindle speed to the selected properties of the machining process and the workpiece [12][13][14]. The advantage of these methods is that they generally need neither modifications of the machine tool structure nor utilization of sophisticated equipment, like for example: active damping methods [15][16][17][18][19], semiactive methods [20,21] or dynamic feedforward control applied towards heavy machine tools [22].…”

Section: Introductionmentioning

confidence: 99%

A technique of experiment aided virtual prototyping to obtain the best spindle speed during face milling of large-size structures

et al. 2020

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The paper presents an original method concerning vibration suppression problem during milling of large-size and geometrically complicated workpieces with the use of novel way of selecting the spindle speed. This consists in repetitive simulations of the cutting process for subsequent values of the spindle speed, until the best vibration state of the workpiece is reached. An appropriate method of obtaining a computational model, called a modal approach, consists in identifying the parameters of the workpiece model created using the Finite Element Method (FEM). Thanks to the results of the identification of the modal subsystem obtained by the Experimental Modal Analysis (EMA) method, it can be stated that the parameters obtained from the experiment and delivered from the computational model have been correctly determined and constitute reliable process data for the simulation tests. The Root Mean Square (RMS) values of time domain displacements are evaluated. The efficiency of the proposed approach is evidenced by chosen technique of mechatronic design, called Experiment Aided Virtual Prototyping (EAVP). The proposed method is verified on the basis of the results of the experimental research of the relevant milling process.

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Section: Introductionmentioning

confidence: 99%

A technique of experiment aided virtual prototyping to obtain the best spindle speed during face milling of large-size structures

et al. 2020

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“…Furthermore, the dynamics of the machine tool can be improved by passive and active damping systems, as summarized by Munoa et al [16]. Among the different reviewed techniques, Munoa et al [17] used an additional acceleration feedback control loop to damp chatter vibrations while using a double pinion and rack feed drive. Later, Beudaert et al [18] described the limiting factors of this technique.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rack and Pinion Feed Drive Control Parameters on Machine Tool Dynamics

Franco

Beudaert

Erkorkmaz

2020

JMMP

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In large heavy-duty machine tool applications, the parametrization of the controller that is used for the positioning of the machine can affect the machine tool dynamics. The aim of this paper is to build a Multiple-Input and Multiple-Output model that couples the servo controller and machine tool dynamics to predict the frequency response function (FRF) at the cutting point. The model is experimentally implemented and validated in an electronically preloaded rack and pinion machine tool. In addition, the influence of each control parameter on the machine tool’s compliance is analysed.

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“…Ganguli et al [2] investigated the effect of active damping on regenerative chatter instability. Munoa et al [3] used the machine tool's own drives to suppress chatter with the help of an external accelerometer located close to the tool center point. Duncan et al [4] increased the damping of the spindle-cutter system near the chatter frequency by adding additional dampers to the spindle.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis for milling system with variable pitch cutters under variable speed

Huang¹,

Deng²,

Li³

et al. 2019

J. vibroeng.

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Regenerative chatter can reduce machining quality, tool life, and productivity during milling process. In order to control the milling chatter, the stability analysis of milling system is very important. It has been found that variable spindle speed milling and the use of variable-angle tools are effective to control milling chatter. This paper mainly studies the control effect when these two methods are used simultaneously. Firstly, the improved full-discretization method is used to predict the stability of variable spindle speed milling process with variable pitch cutters. And on the basis of stability prediction, the influence of spindle speed modulation parameters on stability is analyzed. Meanwhile, the stability prediction results of down-milling and up-milling operations, different radial immersion ratio and different tooth pitch variation form are compared. The results show that the stability of variable spindle speed milling process with variable pitch cutters is better than that of variable pitch cutters in constant spindle speed milling process. And the improvement of the stability is related to the spindle speed modulation parameters. When the modulation parameters are bigger, the stable cutting area of the stability lobes diagram will be larger. Secondly, in the up-milling operation and the low immersion operation, the variable spindle milling with variable pitch cutters has better stability than the down milling operation and the high immersion operation. Under the condition that the pitch angles vary linearly, the stability is better. Finally, the time domain simulation is performed and the simulation results verify the accuracy of the stability prediction results.

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Active suppression of structural chatter vibrations using machine drives and accelerometers

Cited by 67 publications

References 10 publications

A technique of experiment aided virtual prototyping to obtain the best spindle speed during face milling of large-size structures

A technique of experiment aided virtual prototyping to obtain the best spindle speed during face milling of large-size structures

Effect of Rack and Pinion Feed Drive Control Parameters on Machine Tool Dynamics

Stability analysis for milling system with variable pitch cutters under variable speed

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