Thermo-mechanical analysis of angular contact ball bearing

The thermal-mechanical character, which is difficult to ensure because of the lack of a corresponding theory and tool, has a significant effect on the dynamics of bearings. It even leads to a sudden failure of bearings in a working situation. In this research, a thermal deformation model was established, based on the analysis of temperature effect on the basic size of angular contact ball bearing. And the transmission from rolling size to bearing axial stiffness was explicit. On the basis of the variation of Hertz contact stiffness and the change of initial contact angle of angular contact ball bearing caused by temperature rise, a “Thermo- mechanical” model of bearing was proposed. According to this model, using the corresponding calculation procedure programmed by MATLAB, the effect of bearing temperature on the axial stiffness has been studied. And the correctness of this model was verified with experiments. Some design suggestions have been made for the decision of bearing preload: to prevent the bearing failure caused by overheating.

[1]  Chi-Wei Lin,et al.  An integrated thermo-mechanical-dynamic model to characterize motorized machine tool spindles during very high speed rotation , 2003 .

[2]  Mohammad R. Movahhedy,et al.  THERMO-MECHANICAL MODELING OF HIGH SPEED SPINDLES , 2012 .

[3]  Qing Zhang,et al.  A preload analytical method for ball bearings utilising bearing skidding criterion , 2013 .

[4]  G. Hagiu,et al.  Dynamic characteristics of high speed angular contact ball bearings , 1997 .

[5]  Christian Brecher,et al.  Machine tool spindle units , 2010 .

[6]  Chris K. Mechefske,et al.  An analytical model to investigate skidding in rolling element bearings during acceleration , 2012 .

[7]  Hao Wu,et al.  Vibration analysis on the rolling element bearing-rotor system of an air blower , 2012 .

[8]  A. B. Jones.  Ball Motion and Sliding Friction in Ball Bearings , 1959 .

[9]  A. Palmgren.  Ball and roller bearing engineering , 1945 .

[10]  Jerzy Jedrzejewski,et al.  Modelling of angular contact ball bearings and axial displacements for high-speed spindles , 2010 .

[11]  Jianqiang He,et al.  Effects of geometric parameters on static load capacity of a double-row four-point contact ball bearing , 2013 .

[12]  Ching-Yuan Lin,et al.  The effect of bending loads on the dynamic behaviors of a rolling guide , 2012 .

[13]  Uttara Kumar,et al.  Investigation of spindle bearing preload on dynamics and stability limit in milling , 2012 .

[14]  Bo Wu,et al.  Heat generation modeling of ball bearing based on internal load distribution , 2012 .

[15]  Wenzhong Wang,et al.  Modeling angular contact ball bearing without raceway control hypothesis , 2014 .

[16]  Jay F. Tu,et al.  A thermal model for high speed motorized spindles , 1999 .