Assembly fixture of armature assembly for electrohydraulic servo valve

Abstract

The invention discloses an assembling jig used in an armature component of an electrohydraulic servo valve. The armature component consists of a baffle feedback rod, a tubular spring with a shaft shoulder and an armature; the assembling jig comprises a mounting base, two left and right blocks, a positioning shaft and two first positioning pins used for guiding the tubular spring, a baffle positioning sleeve, a locknut and two second positioning pins used for positioning the armature. The assembling jig used in the armature component of the electrohydraulic servo valve of the invention is adopted, namely,, by virtue of the left and right blocks, a positioning hole on the positioning shaft, the positioning pins of the tubular spring and the positioning pins of the armature, the assembling jig can accurately position the working directions of a baffle surface of a baffle feedback rod, a mounting hole of the tubular spring and the armature, thus realizing comparatively high the accuracy of form and position. The assembling jig can realize parallelism of the work plane of the armature and the bottom face of the tubular spring and also can realize the larger magnitude of interference and the reliability of assembly when in use.

Description

technical field [0001] The invention relates to an assembly jig for precision small parts, in particular to an assembly jig for an armature assembly, which is the core component of an electro-hydraulic servo valve in an electro-hydraulic control system. Background technique [0002] The development of electro-hydraulic servo valves in the international professional field has gone through more than 50 years, and the application occasions are becoming more and more extensive. However, the research and manufacture of domestic servo valves are still in a relatively backward state, and the technical level of the combination and assembly of parts is also far behind that of foreign countries. As one of the core components of the electro-hydraulic servo valve, the armature assembly is the most important component that affects the static and dynamic performance of the servo valve. [0003] The armature assembly is an assembly that is assembled by three parts of the baffle feedback l...

AI Technical Summary

Problems solved by technology

[0004] For small armature components, its assembly has always been a difficult point in the assembly and processing of servo valves. Generally, there will be characteristics of thin-walled tube springs with large deformation, low press-fit accuracy, and low assembly efficiency.

And then affect the reliability and performance of the electro-hydraulic servo valve

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