The Wire Race Ball Bearing' Contact Stress Disquisition And Simulation

The wire race ball bearings is mostly applied in three-anxis simulation test turntable. Possessed more light mass, much less inertia, small size in axes direction, big size in radial direction, higher angular rigidity, frequently been of use in shafting of big radius. in the interest of adapting big size in radial direction, higher precision, higher angular rigidity, less moment of inertia, higher dynamic capability in the three-anxis simulation test turntable. Researching the angular rigidity of the wire race ball bearings in axes direction, the adjustment mode and adjustment quantity to shafting, and analysing the contact stress of bearings in work is very necessity.This paper first conducts the research to the steel wire roller conveyer ball bearing rolling body and the steel wire roller conveyer spot contact question, gives the main geometry parameter of the zone of contact by the Hertz contact theory, stress extreme value as well as contact body elasticity approach quantity formula, and acts according to the practical application to carry on the simplification, calculates the main parameter of the bearing zone. Foundation in to the steel wire race ball bearing contact theoretical analysis computation, and the steel wire race ball bearing main friction form analysis, gave the bearing several kind of main friction to have the form in the work process, and gave the corresponding theoretical calculation formula.The bearing spot contact and the friction carries on after the analysis, has carried on the simulation to the bearing work process, from simply established sigin ball two race model to the complex distinction the roller conveyer, the single ball four roller conveyers and the circular roller conveyer single ball four roller conveyer steel wire roller conveyer ball bearing finite element models, introduced the modelling method in detail, the restraint and the load infliction method. Obtained pre-tight and in the work process pressure distribution, the frictional stress, the elastoplasticity distortion and the stress distributed cloud chart and so on, and has carried on the thorough comparison and the analysis to the result. Have the good guiding sense to the actual engineering design and the adjustment.