Rolling-mill preloading interference acute blade rolling method and special device thereof

Abstract

The invention discloses a preload interference precision rolling method for the leaf blade of a rolling mill and special equipment thereof, which is characterized in that: load is preloaded on the rolling mill, the preload is 1.1 to 1.3 times larger than the resisting force generated by the roll milling of the leaf blade; the resisting force generated by the leaf blade satisfies the following formula: F is equal to SE, wherein, F is the resisting force generated by the leaf blade, S is the elastic deformation value generated by equipment and forming tools, and E is the elasticity modulus of the equipment and forming tools. The special equipment comprises a preload interference mechanism, a mill setting mechanism, a mill forming mechanism and a mill hydraulic mechanism. The invention changes the traditional mechanical structure and processing method, improves the product performance, and can be used for the rolling of the leaf blade of an engine.

Description

technical field [0001] The invention relates to a mechanical vane rolling technology, and in particular provides a preload interference precision rolling vane method and special equipment for a rolling mill. Background technique [0002] Due to the high-strength, high-precision, and large thrust-to-weight ratio performance requirements of the third and fourth-generation aero-engines, the compressor blade material has transitioned from martensitic stainless steel to high-temperature alloys using extrusion and rolling combined deformation heat treatment processes. The new process of no-surplus rolling solution + aging treatment, this kind of blade is small and thin, and the radius of the thinnest part of the inlet and exhaust edges is as small as 0.07mm. The number of sections of the blade is large and the section distance is small, so the requirements for dimensional accuracy and surface roughness are very high. It is quite difficult to process this type of blade. At presen...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems that quite a lot of blades (more than 50%) are in the out-of-tolerance state during the blade rolling process, and the adjustment is inconvenient, the adjustment value is not quantified enough, and the adjustment of the speed of each part cannot be realized separately. A rolling mill preload interference precision rolling blade method and its special equipment

Since the position of the lower wedge directly determines the size of the rolling mill interference produced by the rolling mill, the preload interference of the original rolling mill is unstable.

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