外文翻译-万向节十字轴总成失效分析.docVIP

Cross-axis gimbal assembly Failure Analysis The main function of joints in different axis passing between the rotating shaft torque, it has been widely used in various types of truck axle shaft connected between the cross section, usually in the course of cross-axis universal joint of the Needle Roller Bearings for rotary movement is not, but for the rotation of the swing movement, the load cycle changes submitted. Based on the heavy-duty vehicle WX0082 Cross-axis gimbal assembly of less than life pieces of the failure mode of failure, failure, structural parameters and materials used and the performance of finite element analysis and other methods to conduct a comprehensive comparative analysis of product performance a design improvement. ? 1. Oblique imprint The author of a company from the provision of three packs of the three packs of Service returned failure cases observed that the cross-axis oblique journal imprint is relatively serious, bearing rings also produce the inner wall of the imprint, but the depth of cross-axis than the light. By the analysis of joints installed on the bearing assembly, when the total space bearing a larger circle, the needle easily skewed, with the result that journal have a cross-axis tilt angle with the axis of the embossing, the embossing depth of the expansion of more deep, the needle will not be able to spin, thus increasing frictional resistance, exacerbated by the extension of indentation. The total circumference of its appropriate space should be controlled in the range of 0.1 ~ 0.4mm inside, JB/T3232 in a given space for a total circumference of not more than 0.5mm. 2. Fatigue spalling Shaft angle in the use of a smaller state, universal joint assembly of the needle bearing journal diameter and cross-axis angle in the framework of repeated smaller swing, when the cross-axis with the bearing radial clearance with the wear and tear expansion will lead to concentration of load, the load will be large local indentation fatig