Milling machining method for heat-proof layer

Abstract

The invention discloses a milling machining method for a heat-proof layer, belongs to the technical field of heat-proof layer machining, and solves the technical problems that the appearance quality is poor, the edge size precision is low, and research and use requirements cannot be met after machining through an existing milling method. The milling machining method comprises the following steps of: roughly machining a to-be-machined part on the heat-proof layer, and reserving machining allowance to obtain a machined surface; preparing curing glue; coating the prepared curing glue on the machined surface until the curing glue permeates into the heat-proof layer from the machined surface; curing the curing glue; and subjecting a to-be-machined position on the heat-proof layer to finish machining, and milling the machined surface to a target size. According to the method disclosed by the invention, the surface milling precision of the low-density heat-proof layer can be improved, the apparent quality of the machined surface is improved, holes, grooves or surfaces machined on the surface of the low-density heat-proof layer can meet the use requirements, and the rework rate and the rejection rate of the heat-proof layer are reduced.

Description

technical field [0001] The invention belongs to the technical field of heat-proof layer processing, and in particular relates to a milling method for a heat-proof layer. Background technique [0002] As the protective layer of the aircraft, the heat-resistant layer can isolate the high temperature generated by the friction between the aircraft and the atmosphere during the flight of the aircraft, and protect the payload inside the aircraft. The heat-proof layer is usually formed by braid + RTM, which has the advantages of low density, good heat-proof effect, stable structural performance, and corrosion resistance. However, after the low-density heat-proof layer is formed, most areas of the outer wall of the heat-proof layer do not need to Machining, but when the heat release layer is installed, grooves, holes, arc-shaped end faces, etc. need to be processed on the outer wall, but due to the structural limitations of the heat protection layer, after processing using the exist...

AI Technical Summary

Problems solved by technology

[0003] This application aims at at least to a certain extent to solve the problem that the processing surface of the heat-proof layer will produce a large number of burrs that are difficult to remove after processing by the existing milling method. The poor apparent quality and low edge dimensional accuracy lead to uneven processing surface, which cannot meet the requirements of research and use.

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