System and method for measuring and selecting differential bearing gasket of divided steering drive axle assembly

Abstract

In order to eliminate the influence of human factors in production line assembly, in particular the measuring and selecting of critical components, the invention provides a system and a method for measuring and selecting a differential bearing gasket of a divided steering drive axle assembly. The measuring and selecting system comprises an electronic control unit and a detection platform; and thedetection platform is provided with a main reducing gear shell positioning and locking mechanism, a driving gear rotation driving mechanism, a lower guide driving mechanism of a lower reference measuring block, and an adjustable pressure head and an upper guide driving mechanism of the upper reference measuring block, which are arranged vertical to an axes of a driven gear. The measuring and selecting method comprises that: the electronic control unit respectively acquires values of displacement sensors in the lower guide driving mechanism and an upper guide driving mechanism, and the selection is carried out by calculating according to a fixed mathematical model. The technical scheme realizes automatic detection and measuring and selecting operation of a device so as to ensure that meshedbacklash spacing in a contacting area of driving and driven gear pairs and differential bearing pre-tightening torque meet technical requirements for products.

Description

technical field [0001] The invention relates to a method for measuring and selecting differential bearing adjusting washers configured in the assembly and production of a disconnected steering drive axle assembly and a system device for realizing the method. Background technique [0002] The disconnected steering drive axle assembly consists of differential sub-assembly, main reducer assembly, core components of half-shaft casing, left and right ball cage half-shafts, left and right wheel side assemblies and other components. It is a key component of the 4×4 drive train of various medium and high-end light vehicles. Among them, the left and right separated main reducer assembly and the half shaft sleeve are the core components of the drive axle assembly. One of the key quality characteristics of its products is the backlash and differential speed of the contact area of ​​the main and driven gear pairs. The pretightening torque of the bearings of the differential gear should...

AI Technical Summary

Problems solved by technology

Due to the special structural form of the left and right split main reducer assemblies, at present, the domestic automobile axle industry still relies on the work experience of production line operators to manually try to complete the differential speed of the main reducer assembly and the half shaft casing. The selection and assembly method of the differential bearing adjusting washer, due to the influence of the dimensional tolerance, shape and position tolerance of the parts itself, and human factors such as manual operation, led to improper selection of the pre-tightening torque adjusting washer value of the differential bearing for trial assembly. The backlash of the meshing teeth in the contact area of ​​the main and passive gear pairs and the pretightening torque of the differential bearing cannot meet the technical requirements of the product at the same time. A technical problem where a potential failure mode that destroys the mating surface finish of the component occurs

To sum up, due to the lack of high-tech measurement and detection technology in the current axle industry, especially the support of technical means suitable for online detection, it is difficult to improve assembly quality control and production efficiency to meet the high-speed development of the automobile industry. The demand for the production of the steering drive axle assembly

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