Finite Element Simulation Analysis Of High Speed Grinding Temperature Of Engineering Ceramics

Engineering ceramics are typical hard-to-grind materials.During the grinding process,the surface of the workpiece has a high grinding temperature.Within a certain range,the grinding temperature can increase the proportion of the surface material of the ceramic workpiece to be removed by plastic deformation,which is beneficial to improve the surface quality.However,if the grinding temperature is too high,processing defects such as grinding cracks are likely to occur.So far,the thermocouple method can directly measure the grinding temperature of the ceramic workpiece surface,but the thermocouple method is more difficult to measure the grinding temperature,and it will damage the ceramic workpiece and affect the measurement accuracy.ANSYS finite element simulation technology can use the computer to simulate the grinding temperature of engineering ceramics based on the theory of heat conduction,obtain the temperature distribution of the ceramic workpiece during the grinding process,and conduct in-depth analysis of the grinding temperature.This article first uses the least squares method linear regression to modify the calculation formula of the heat distribution ratio of engineering ceramics for ordinary grinding and high-speed grinding,and then uses ANSYS software to simulate the grinding temperature of ceramic workpieces under different grinding parameters,and analyze the grinding parameters.The influence on the simulation grinding temperature of alumina ceramics and zirconia ceramics;the comparative analysis method is used to study the influence of the finite element mesh of the workpiece model on the simulation grinding temperature,and the single factor variable method is used to further analyze the workpiece model along the feed speed direction The influence of the number of finite element meshes on the simulation grinding temperature;the single factor variable method is used to analyze the influence of the load loading steps on the simulation grinding temperature during the simulation process.Finally,the simulation grinding temperature field of engineering ceramics is analyzed.Through research,it is found that the heat distribution ratio calculated by the revised formula has higher accuracy,and the simulation grinding temperature accuracy of ceramic workpieces is higher;the finite element meshing method and density of the workpiece model have a certain influence on the simulation grinding temperature of engineering ceramics.The number of finite element meshes along the workpiece grinding width has almost no effect on the simulation grinding temperature,but the number of finite element meshes along the feed speed direction has a certain influence on the simulation grinding temperature.The number of finite element grids in the speed direction can improve the accuracy of the simulated grinding temperature,but it will reduce the simulation speed;the more load steps in the simulation process,the simulated grinding temperature tends to a certain value with the increase of the load steps,the higher the simulation accuracy,but the slower the simulation speed.The results prove that the error between the finite element simulation grinding temperature of engineering ceramics and the experimental grinding temperature is relatively small.At the same time,the grinding temperature field of the ceramic workpiece,the temperature gradient of the surface of the ceramic workpiece,and the change of the ceramic grinding temperature with time are analyzed,which provides a practical reference for the actual grinding of engineering ceramic workpieces.