Calculation And Statistical Analysis Of Bearing Running Accuracy Based On Contour Shape Of Outer Ring

The running accuracy of rolling bearing is a major performance index to characterize the rolling bearing performance. It plays a vital role on the rotary performance of shaft equipment. It is a new research project to study prediction theory of running accuracy of rolling bearing, and it is instructive on designing and developing high-precision bearing.In this paper, the running accuracy of cylindrical roller bearing is predicted by programming simulation and mathematics statistics. Aim at radial runout of outer ring, the following work is done: Firstly, under the assumptions that outer ring only exists roundness error and bearing parts are rigid, using C++ programming to achieve prediction simulation algorithm, and discuss the process of achieving the algorithm in detail, demonstrate the feasibility and effectiveness of the algorithm. Secondly, analyze the influence of outer ring raceway roundness harmonic coefficients, harmonic frequency, radial clearance and the number of roller on radial runout and radial migration of out ring combined with the simulation results, obtain special regularity among precision cylindrical roller bearings rotating, harmonic frequency and the number of roller. Again, study cylindrical roller bearing parts roundness error and running accuracy, based on experimental data analyze distribution of roundness error and its harmonic. Finally, establish a statistical model of cylindrical roller bearing outer ring radial runout using mathematical statistics regression analysis combined with simulation and experimental data.Through the above research conclusion obtained: The simulation algorithm in this paper can effectively predict outer ring radial runout of cylindrical roller bearing. The roundness error has a great impact on the running accuracy of cylindrical roller bearing, the relationship between harmonic parameters and running accuracy can be expressed by binary quadratic orthogonal polynomials, it has a significant meaning on the mathematical statistics.