Flexible coupling module type blisk abrasive flow machining polishing clamp

Abstract

The invention discloses a flexible coupling module type blisk abrasive flow machining polishing clamp. The flexible coupling module type blisk abrasive flow machining polishing clamp comprises an upper flow distributing plate, an outer sleeve, a lower flow distributing plate, restraining modules, a center shaft and a locating pin. Each restraining module is composed of restraining sub-modules, wherein the number of the restraining sub-modules is identical with that of blades of the turbine blisk. Gap flow channels are formed between the restraining sub-modules and the blades of the turbine blisk. Each restraining sub-module on the corresponding gap flow channel and the surface of the corresponding blade of the turbine blisk are provided with coupled curved surface shapes. The sections, in the direction perpendicular to the curved surface of the blades, of the gap flow channels are identical and have the same width. In the polishing process, abrasive materials flow into the gap flow channels between the restraining sub-modules and the blades of the turbine blisk along a flow distributing channel of the upper flow distributing plate. Double layers of flow guide plates enable the abrasive materials to be continuous and stable when the abrasive materials enter the gap flow channels. In the abrasive flow machining polishing process, the inner surface of each gap flow channel which the abrasive materials pass through always keeps the same distance away from the surface of the corresponding blade, and the surface quality of the blades is guaranteed to be uniform. The combined clamping manner is adopted by the restraining modules, and turbine blisks of different types and sizes can be polished.

Description

technical field [0001] The invention belongs to the technical field of precision machining technology and mechanical tooling, and relates to a flexible coupling modular integral blisk abrasive flow polishing fixture; it is especially suitable for polishing the blade curved surface of turbine blisks in multi-type aerospace engines. Background technique [0002] The surface polishing of the overall blisk in the aerospace engine is manually polished. Manual polishing is not only labor-intensive and inefficient, but also the polished surface is easy to burn, and it is difficult to guarantee the surface accuracy and surface integrity. [0003] The blade of the blisk is a typical complex curved surface, and it is very difficult to polish because it is difficult for ordinary tools to touch the surface of the blade. [0004] Abrasive Flow Machining (AFM), also known as extrusion honing, is a fluid viscoelastic polymer loaded with abrasives to perform surface polishing, chamfering an...

AI Technical Summary

Problems solved by technology

[0006] The invention discloses a flexible coupling modular integral leaf disc abrasive flow polishing fixture to solve the inconsistency of gap flow channel spacing in the prior art; the state of abrasive particle flow entering the gap flow channel is not stable and continuous; the uniformity of blade surface quality is poor ; Fixtures are not universal, different types of blisks need to use different fixtures, and the manufacturing cost of fixtures is high

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