Research And Development Of E346104Y Matched Angular Contact Ball Bearings

Angular contact ball bearings,as a typical rolling ball bearing,have a certain bearing capacity for axial and radial loads,and have received full attention and key research in many industrial fields.Taking the aerospace industry as an example,due to the particularity of its working environment,the performance requirements of bearings are much higher than other industrial fields,and the requirements for life,fatigue strength and stiffness are the most prominent.Therefore,in-depth study of the design and processing technology of angular contact ball bearings has very important practical significance.This article takes the angular contact ball bearing used in the aircraft slat torsion bar as the research object.Based on the bearing design principle,the bearing is analyzed by static and dynamic finite element analysis,and its processing technology is designed to be angular contact the wide application of ball bearings provides a scientific basis.For angular contact ball bearings,in addition to the components that have achieved parameter standardized production,optimizing the structural parameters of the non-standardized parts of the bearing can not only improve the development efficiency of the bearing and reduce the production cost,but also significantly improve the bearing capacity and The lubrication situation will ultimately achieve a significant increase in the service life of the bearing and a further expansion of the scope of application.Therefore,this paper is based on the Hertz contact theory,combined with the static force of the angular contact ball bearing after the load is applied,to obtain the stress and strain formulas between the contact surfaces inside the bearing,and solve it based on the structural characteristics of the angular contact ball bearing Theoretical distribution of bearing load.According to the design requirements of the bearing structure,including dimensions,working conditions and performance requirements,combined with the design principles of angular contact ball bearings,complete the main parameter design of the bearing structure that meets the performance,and carry out the rated load,ultimate load,life,and safety The coefficients,fatigue load,stiffness and friction are checked and calculated.Use the numerical calculation software MATLAB,combined with the Hertz contact theory to calculate the contact deformation of angular contact ball bearings,calculate the complex problems related to contact stress,such as elliptic integral and transcendental equation,and use the finite element analysis software Romax to design the bearing structure Perform finite element analysis.According to the structural characteristics of the designed paired angular contact bearings,the design of the overall process of the machining process plan is completed on the guiding line of the basic principles of bearing processing,and the important machining processes of the main production components,the inner and outer rings of the bearing,Such as forging,heat treatment,turning,grinding,etc.,have been analyzed in detail,and a set of effective process routes have been formulated,which provides important guidance for ensuring high-quality,high-efficiency,and low-cost production of bearings.