Simulation And Device Design Of Precision Ceramic Ball Grinding Track Based On Variable Curvature Groove

At present,the market demand for high precision and high performance bearings(ceramic ball rolling bearings)is increasing.However,the ceramic ball bearings cannot be popularized on a large scale because of their low economic efficiency due to the difficulty in machining,low pass rate and long processing cycle.Based on this problem,through modeling the movement of ball forming and the simulation and experiment of ball lapping trajectory,the influence of parameters and characteristics of grinding disc on ball lapping trajectory under the processing condition of single rotary plate with variable curvature groove is qualitatively analyzed in this paper.The grinding disc is designed based on the analysis results.Because the grinding pressure has an important effect on the final forming quality of the ball,this paper also designs the pressurization device.For the above research content,the following are the main work done in this paper:1)Based on the assumption of ball sliding,carried out a mathematical modeling for the movement of ball grinding in the process.2)MATLAB software was used to simulate the grinding trajectory of the sphere in the concentric groove,eccentric groove and spiral groove,and the simulation results were verified through the measured sphere roundness and surface crystal phase pictures during the actual test processing.And based on the simulation results,the factors affecting the Angle of the rotating axis of the ball are analyzed qualitatively.3)Design a new type of closed variable curvature groove grinding disc,and simulate its grinding trajectory.4)according to the pressure requirements of the ceramic ball in the precision grinding process,design a pressurizing device.