Kinematic Analysis Of Micro Abrasive Injection In Intensified Grinding Of Bearing Inner Raceway

With the continuous development of the information technology of social science and technology,especially in the development of high-end intelligent equipment and automation equipment,the bearing is playing a very important role.The bearing's fatigue resistance,reliability and long life also have more and more requirements.Therefore,the requirement of the strengthening method for bearing surface is also higher and higher.The technology of strengthening and grinding on the bearing surface is put forward by Professor Xiaochu Liu from Guangzhou University for a long time based on his theoretical knowledge and practical experience.Strengthening grinding technology is a wet spraying technology in shot peening technology.On the basis of shot peening,some chemical reagents that can produce three layers of composite structure,which can produce "surface tissue structure layer,nitrogen rich physical film layer,nitrogen rich surface strengthening layer",are added to the bearing surface,and it is greatly improved on the basis of the strengthening of the shot pellet.A variety of mechanical properties of the surface of a bearing.At the same time,the technical level of the bearing surface processing in the intelligent processing of our country has been improved,and it has a pioneering improvement,which has an urgent and important significance for the rapid development of the bearing industry in China.However,in the process of intensified grinding shot peening,the size of shot peening angle has a great influence on the surface strengthening of the bearing.This paper derives the relationship between the energy loss formula and angle of impact based on the principle of collision and related formulas,and then calculates the best angle of collision.Then according to the collision principle,the collision model is built to simulate the collision energy loss,and the energy loss at different angles is derived.Finally,the effects of different angle collision results on the hardness and the roughness are verified by the experiment.The main work of this paper is as follows:1)In this paper,the particle collisions are analyzed and summarized,and the different conditions of the ball collision are classified.Then,the energy loss in the two to three dimensional positive collisions and the oblique collisions is calculated.Finally,the energy loss in the three-dimensional oblique collision is calculated.2)The three-dimensional collision model of ball and steel collision is esta blished by two-dimensional and three-dimensional spherical collision model and theoretical analysis.Then,the energy loss formula of the collision between si ngle ball and steel plate is deduced according to the theoretical energy loss for mula of the ball collision,and the energy loss is finally determined.Then thro ugh the simulation calculation,the time of collision and the energy loss are co mpared with the theoretical calculation,and the results are compared with the t heoretical calculation.The impact of the collision angle on the energy loss is demonstrated by multiple particle collisions,and the calculation of the collision between the single steel ball and the steel plate is obtained.The energy loss of stress and strain energy and internal energy loss at about 55 degrees is the most,that is,the most energy is left in the steel plate at this angle,then the collision time must be the shortest in this angle.3)In order to better demonstrate the effect of the collision at this angle,i t is best to blast the steel plate by shot peening and wet jet processing accord ing to the existing conditions,controlling all the external conditions to change the angle range only,then processing and testing the processed samples,and m easuring the hardness of the processing at different angles.The roughness valu e is compared and analyzed,and the final conclusion is drawn.