Structure Research For Crucial Component Of Steel Ball Whole Surface Development Equipment

The steel ball is the critical driving component of bearing balls. Its quality has agreat influence on properties and securities of rolling bearing balls. At present, thejudgement of steel ball quality mainly depends on artificial detection by naked eyes,which is very difficult to guarantee the precision and accuracy. It also imposesrestriction on the application of high precision bearings in the field of aeronauticsand astronautics. Therefore, the domestic much needs the automatic detectionequipment on steel ball surface quality. This paper mainly carries out research on thecrucial component unfolded wheel of detection equipment, which can provide thebasis for realizing the automatic detection.Based on the equipment SIMET AVIKO detecting the steel balls automaticallyand produced by Czech company，this paper sets up the physical prototype of steelball detection mechanism, shoots the movement type of steel ball by high-speedcamera, meanwhile, it observes, analyzes and deeply studies the motion track of steelball under the action of unfolded wheel. According to the steel ball motioncharacteristics, this paper determines the steel ball motion track type and providestheoretical basis for structure design of unfolded wheel.According to the motion track characteristics of steel ball under the action ofunfolded wheel, this paper analyzes the force peculiarities from the unfolded wheeland infers that the overall body of unfolded wheel is center symmetry plane structure.Furthermore, this paper proposes two kinds of structure concept design of unfoldedwheel, analyzes the steel ball motion stability under each structure and selects theoptimal unfolded wheel structure model of stability. It also studies the contact trackfrom unfolded wheel and steel ball to guarantee that the force from unfolded wheelcan not intervene in the movement form of steel ball, and finally determine thegeometric construction of unfolded wheel.Taking advantage of virtual prototype technology, this paper proceeds withvirtual simulation analysis of designed unfolded wheel, establishes the precise three-dimensional model of the unfolded wheel, the driving wheel, the supportingwheel and their affiliate components. In the simulation software ADAMS, we shouldset the reasonable simulation parameters and impose the correct constraints, simulateand analyze the whole unfolded mechanism, trace and detect the motion trajectory ofone point on the steel ball, compare and analyze the theoretical trajectory withpractical trajectory, and then confirm the validity of designed structure of unfoldedwheel. We can conclude that under the action of unfolded wheel, the detection probetests the steel ball surface in a way of well-distributed meridian line.