Simulation Study Of Thin Wall Deep Groove Ball Bearing Based On Romax Designer

The equal-section thin-walled deep groove ball bearing is one of the special bearings for industrial robots.The application of this bearing is mainly in the wrists,elbows and waists of industrial robots.Compared with standard deep groove ball bearings,thin-walled deep groove ball bearings have better load-bearing characteristics when the inner diameter is the same.This is because thin-walled deep groove ball bearings have more balls,the internal force distribution is more uniform,and the balls The amount of deformation at the point of contact with the inner and outer ring raceways is smaller.In order to localize the bearings for industrial robots and explore the changes in the load and life of thin-wall deep groove ball bearings with equal cross-sections during the working process,this subject uses the finite element simulation software Romax Designer to establish a shafting model.For the thin-wall deep groove ball bearings CSCB035 in different The working temperature,radial working clearance,radial load,bearing speed and other conditions of bearing load distribution,contact stress,fatigue life,bearing stiffness,and minimum oil film thickness were simulated.The article first studied the effect of each parameter change on bearing performance with a single factor,and then used orthogonal experiment method and range analysis method to explore the best combination of selected parameters.Through the simulation research on the selected parameters of the thin-walled deep groove ball bearing CSCB035,the following conclusions are drawn:(1)The increase in operating temperature has no effect on contact characteristics,the minimum oil film thickness of the inner and outer ring raceways decreases,and the fatigue life of the bearing remains unchanged for the first time,and drops sharply after reaching a certain temperature.(2)As the radial working clearance increases,the number of loaded balls gradually decreases from full load,and finally stabilizes.The maximum contact load,maximum contact stress,subsurface stress and depth of the ball-raceway all decrease first and then decrease.With increasing trend,the minimum oil film thickness and fatigue life tend to increase first and then decrease.(3)As the radial load increases,the maximum contact load,maximum contact stress,bearing stiffness,maximum subsurface stress and its depth of the ball-raceway increase linearly,and the fatigue life decreases linearly.The contact characteristics have no effect and the fatigue life decreases linearly.(4)Taking fatigue life as the optimization goal,the optimal combination of four factors and five levels was selected: bearing working temperature ?178?,radial working clearance=-0.002 mm,radial load=2000N,bearing speed=1700rpm.(5)The Romax Designer finite element analysis method is used to reduce the experiment cost and experiment time.