Study to Improve the Spindle Bearing Stiffness of Medium External Cylindrical Grinding Machines Based on Numerical Simulation of Hydrostatic Lubrication
Main Article Content
Abstract
Medium-sized cylindrical grinding machines are fine-machining machine tools, which are widely used in the manufacturing industry. Accuracy of grinding process depends mainly on the precision and working quality of the spindle unit, in which the stiffness of the spindle bearings plays an important role. On the spindle bearings of external cylindrical grinding machine, the machine is usually uses hydrodynamic bearing with three self-aligning pad, which allows the machining workpiece to achieve a rounded and accurate diameter up to 0.005 mm. Based on the hydrostatic lubrication theory as well as the current fabrication and fabrication capabilities of the self-aligning pad of hydrodynamic bearing spindle, this paper presents the results of calculation and numerical simulation to improve the bearing film stiffness of the medium cylindrical grinding machines with a reasonable hydrostatic parameters.
Keywords
External cylindrical grinding machine, Spindle bearing stiffness, Hydrostatic lubrication
Article Details
References
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[2]. S. Uberti et al., Study & design of a special test bench for hydrostatic spindle housings. In Proceedings of DESIGN 2010, the 11th International Design Conference 2010, pp. 1729-1740. Dubrovnik, Croatia.
[3]. He Qiang et al., Numerical simulation and Experimental study of the Hydrostatic Spindle with Orifice restrictors. The Open Mechanical Engineering Journal, 2016, vol.10, pp79-92.
[4]. W. Chen et al., Hydrostatic spindle dynamic design system and its verification, Proc, Inst, Mech. Eng, BJ. Eng. Manuf., vol. 228, no. 1, pp. 149-155. 2014.
[5]. D.Chen et al., Dynamic and static characteristics of a hydrostatic spindle for machine tools, J. Manuf. Syst., voi 13, pp. 33, 2012.
[6]. Станок универсальный круг лошлифовальный 3К12, моква, 1975.
[7]. W. Brian Rowe et al., Hydrostatic, Aerostatic, and Hybrid Bearing design, Elsevier Inc, 2012, ISBN: 978-0-12-396994-1.
[8]. W.B. Rowe, Dynamic and static properties of recesses hydrostatic journal bearing by small displacement analysis. Journal of Lubrication Technology, 102, pp71-79, 1980