Analysis of the Process of Turning of Low-Rigidity Shafts

Abstract:

A machining station, working together with a lathe, was designed and constructed for the stabilisation of the axis of low-rigidity parts in the process of machining. The basic element is a self-centring lunette with hydraulic drive, allowing part centring without any preliminary alignment. The methodology of calculation of the parameters of the “semi-finished product/supports” subsystem is given. The effect of various schematics of support arrangements on the dynamics of the semi-finished product was analysed. The analysis of schemes of low-rigidity part fixing in the device for the stabilisation of its axis was conducted with the method of initial parameters. The choice of supports and the positioning of backstays and/or buffering steady rests was also analysed for increasing the stationary character of the process of machining and the quality of shaping the machined surface.

• Periodical: Applied Mechanics and Materials (Volume 791)
• Pages: 238-245
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.791.238
• Online since: September 2015
• Authors: Antoni Świć*, Victor Taranenko, Arkadiusz Gola
• Keywords: Buffering of Oscillations, Equal Inflexibility, Low-Rigid Work Piece, Self-Centring Lunette, Turning

References

[1] A. Świć, L. Mazurek, Modeling the reliability and efficiency of flexible synchronous production line, Maintenance and Reliability, 4 (2011) 41-48.

[2] L.Z. Qiang, Finite difference calculations of the deformations of multi-diameter workpieces during turning. J. Mat. Process Technol. 98 (2000) 310-316.

DOI: 10.1016/s0924-0136(99)00267-8

[3] A. Świć, W. Taranenko, Adaptive control of machining accuracy of axial-symmetrical low-rigidity parts in elastic-deformable state, Maintenance and Reliability, 3 (2012) 215-221.

[4] A. Świć, A. Gola, A Method of Qualification of Parts for Production in a Flexible Manufacturing System, Actual Problems of Economics, 149 (2013) 576-585.

[5] A. Świć, D. Wołos, J. Zubrzycki, M. Opielak, A. Gola, W. Taranenko, Accuracy Control in the Machining of Low Rigidity Shafts. Applied Mechanics and Materials Vol. 613 (2014) 357-367, DOI: 10. 4028/www. scientific. net/AMM. 613. 357.

DOI: 10.4028/www.scientific.net/amm.613.357

[6] M. Movahhedy, P. Mosaddegh, Prediction of chatter in high speed milling including gyroscopic effects, Int. J. Machine Tools Manufacture, 46 (2006) 996-1001.

DOI: 10.1016/j.ijmachtools.2005.07.043

[7] A. Świć, W. Taranenko, J. Szabelski, Modelling dynamic systems of low-rigid shaft grinding, Maintenance and Reliability, 2 (2011) 13–24.

[8] A. Świć, D. Wołos, G. Litak, Method of control of machining accuracy of low-rigidity elastic-deformable shafts, Latin American Journal of Solids and Structures, 2 (2014) 260-278.

DOI: 10.1590/s1679-78252014000200007

[9] A. A. Cardi, H.A. Firpi, M. T. Bement, S. Y. Liang, Workpiece dynamic analysis and prediction during chatter of turning process. Mechanical Systems and Signal Processing, 22 (2008) 1481–1494.

DOI: 10.1016/j.ymssp.2007.11.026

[10] W. Halas, V. Taranenko, A. Swic, G. Taranenko, Investigation of influence of grinding regimes on surface tension state. Lecture Notes In Artificial Intelligence, Vol. 5027. Berlin, Heidelberg: Springer – Verlag, 2008, pp.749-756.

DOI: 10.1007/978-3-540-69052-8_78