Contact Mechanical Properties of Thin-Walled Flexible Bearing-Elliptical Cam Wave Generator
Taking into account the large deformation of the structural elasticity of the raceway of the thin-walled collar under the action of elliptical cams,the Hertz contact theory is applied to calculate the trend of the exact contact stiffness between the steel ball and the elliptical collar.Combining the three-dimensional Timoshenko beam unit and the six-dimensional connection force,a three-dimensional double semicircular flexible collar equivalent mechanical model describing the elastic large deformation of the thin-walled collar structure and a multi-body contact mechanical model of the flexible bearing-elliptical cam-wave generator were established by using ADAMS.Calculate and analyze the influence of design parameters such as harmon-ic displacement and radial clearance on the deformation characteristics and internal load distribution of flexi-ble bearing rings under the action of elliptical cams.The results show that under the influence of large elastic deformation of the collar structure,the contact stiffness between the steel ball and the elliptical inner and out-er collar shows a bimodal distribution law of wave peaks and troughs.Due to the total number of steel balls is odd,in the direction of the long axis of the ellipse presents two asymmetric odd and even support load zone distribution law,and the larger the harmonic displacement the greater the contact force.As the radial clear-ance increases,the number of loaded balls in both loads decreases,the contact force increases,and the differ-ence between the collar deformation displacement and the design value of the harmonic deformation increases.
万方数据
维普
