Parametric Design Of Mirror Ball Deployment Structure Key Parts And Experimental Research

Steel ball is the most common type of rolling element bearing,the surface quality of it is very important to bearing performance and life.With the development of modern manufacturing,the precision and efficiency of traditional detection method has been difficult to meet the market demand,and than,the high efficiency and high precision of steel ball surface nondestructive automatic testing equipment should be researched and development.How to complete the spherical surface information acquisition,is the important premise of spherical nondestructive testing.Based on the problem of whole surface of sphere,using movement theory analysis,simulation and virtual inquiry experiment to study the integrity of the spherical:By analysis the structure of steel ball defects automatic detection equipment of AVIKO series,a kind of steel ball deployable structure scheme has been established,which depend on contact friction and looks like a wheel,and combine the reverse measure data with theoretical analysis to set a mathematical equation of the complex shape wheel which is established,and then established a body contact equation of the deployable structure central part,furthermore,analyzes the movement characteristics of deployable structure,and obtained the most important two parameters during the unwinding wheel design.Based on the parameters,the numerical simulation by MATLAB iteration method,to obtain the trajectory of one tracking point on the spherical is a spiral with fixed Angle.Based on the theoretical analysis results,using the series parts design function of Solid Works completed the unwinding wheel parametric design,and established a component library,in order to realize the rapid calls of required parts and finish assembly process of steel ball device model.Build a virtual prototype model of deployable structure.Using Admas with Solid Works interface to import theassembly model,constraint,load,drive,etc are added in the Admas,complete the virtual simulation,then get measurement result of steel ball speed,displacement and its trajectory tracking point on the spherical,at last,get the point movement and probe testing curve relative spherical,the maximum effective width of probe test can be found.Through constructing the physical experimental platform for observation r the action of steel ball with the effect of unwinding wheel,and tracking trajectories of one point of steel ball surface,then compared with the results of simulation,obtain the error and analyze the possible causes of error.