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Analytical modeling of the CNC machine axis motion in high-speed milling with local smoothing

Essid, Mohamed and Gassara, Bassem and Baili, Maher and Hbaieb, Moncef and Dessein, Gilles and Bouzid Saï, Wassila Analytical modeling of the CNC machine axis motion in high-speed milling with local smoothing. (2019) The International Journal of Advanced Manufacturing Technology, 105 (1-4). 457-470. ISSN 0268-3768

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Official URL: https://doi.org/10.1007/s00170-019-04157-4

Abstract

In high-speed milling (HSM) of free-form surfaces, the tool path is mainly characterized by a set of short discontinuous segments in tangency. These discontinuities bring an intense kinematic parameter fluctuation of the computer numerical control (CNC) machine axes. The smoothing of the programmed tool path and the optimal choice of the manufacturing process parameters ensure a high productivity with the required quality of the machined surfaces. Precise estimation of the machining time allows an accurate evaluation of the machined product cost. Thereby, this is achieved by studying the effect of the tool path smoothing and the CNC controller parameters on the axis kinematics and the following errors. This paper focuses on the geometrical modeling of the local smoothing block adopted by Sinumerik CNC. Further, a kinematic model is proposed to simulate the axis motion in linear interpolation mode with local smoothing. The identification of the interpolator reduction effect on the programmed tolerance leads to the identification of the smoothing model adopted by the CNC unit. Then, the axis kinematic behavior is modeled while taking into account the drive parameter axes defined by the manufacturer of the CNC unit. The experimental results showed a smooth variation of the axis feed rate along the smoothing blocks and a good correlation with the proposed models.

Item Type:Article
Additional Information:http://www.sherpa.ac.uk/romeo/search.php
HAL Id:hal-02487087
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > École Nationale d'Ingénieurs de Sfax - ENIS (TUNISIA)
Other partners > Institut Supérieur des Etudes Technologiques de Sfax - ISET (TUNISIA)
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Deposited On:10 Dec 2019 10:26

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