System and method for measuring and selecting driving gear mounting distance adjusting shim of divided steering drive axle assembly

Abstract

In order to eliminate the influence of human factors and the like in the prior divided steering drive axle assembly manufacturing assembly lines, in particular in the assembling, measuring and selecting of critical components, the invention provides a system and a method for measuring and selecting a driving gear mounting distance adjusting shim of the divided steering drive axle assembly. The measuring and selecting system comprises an electronic control unit, a detection platform and a calibration block; the detection platform is provided with two support frames horizontally supporting a reference measuring shaft; an elastic pressure lever in a reference measuring shaft fixing clamp of the two support frames is linked with a displacement sensor through induction; a standard mandrel force placing mechanism is arranged vertically between the two support frames; and a data acquisition bus of the electronic control unit is electrically connected with left and right displacement sensors.The measuring and selecting method comprises that: the electronic control unit respectively acquires values of the left and right sensors, and an adjusting shim selecting value is obtained by calculating according to a fixed mathematic model. The technical scheme realizes automatic detection and measuring and selecting operation of a device so as to ensure a meshed mark in a contacting area of driving and driven gear pairs meets technical requirements for products.

Description

technical field [0001] The invention relates to a measuring and selecting system and a measuring and selecting method for a drive gear installation distance adjusting pad required in the assembly and production of a disconnected steering drive axle assembly. 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 assembly quality of the main reducer assembly and the core components of the axle bushing is one of the key factors affecting the overall quality of the light vehicle disconnected steering drive axle assembly, and the main reducer assembly adopts left and right separate The structural form of the main reducer housing brings considerable difficult...

AI Technical Summary

Problems solved by technology

Among them, the assembly quality of the main reducer assembly and the core components of the axle bushing is one of the key factors affecting the overall quality of the light vehicle disconnected steering drive axle assembly, and the main reducer assembly adopts left and right separate The structural form of the main reducer housing brings considerable difficulties to the assembly of key components to meet product technical requirements

At present, the domestic axle industry still relies on the work experience of the production line operators to manually try to complete the selection of the drive gear installation distance adjusting gasket in the reducer assembly and the drive and drive gear pairs of the half shaft sleeve. Due to the influence of various factors such as dimensional tolerances, shape and position tolerances, and human factors such as large manual operation errors, the adjustment gaskets for trial assembly are improperly selected, and the meshing marks of the contact areas of the main and passive gear pairs deviate from the product technical requirements. Repeated trial assembly and disassembly can easily damage the matching surface accuracy of parts, and there are potential failure modes, and the production efficiency is therefore low

To sum up, due to the lack of high-tech measurement and detection technology in the current axle industry, especially the support of online detection technology, it is difficult to improve assembly quality control and production efficiency to meet the rapid development of the automobile industry. Production requirements of steering drive axle assembly

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