Machining method for aero-engine inclusive casing

Abstract

The invention discloses a machining method for an aero-engine inclusive casing. When the aero-engine inclusive casing is machined, the margin of turning is determined firstly, tools for turning and drilling and machining parameters are determined respectively, the machined casing is treated through pliers to meet the subsequence surface treatment requirements, and the whole machining process of the inclusive casing is finished. In addition, the inclusive casing is cooled in an air cooling mode after being machined. In order to prevent fibers from absorbing water and causing expansion and deformation of materials in the machining process of the inclusive casing, cooling liquid is not used, and a compared air cooling method is used for in the machining process to realize dry cutting. The machining method can effectively guarantee the machining quality of parts, guarantee that the defects of layering, cracking and the like among layers are avoided, completely meet the related technical standards of parts, reduce the machining cost of parts, and reduce machining technical difficulty.

Description

technical field [0001] The invention belongs to the technical field of aviation equipment processing, and in particular relates to a processing method for an aero-engine containing case. Background technique [0002] The aero-engine fan casing is a casing with an inner containment structure. The containment casing is made of resin-based aramid fiber composite material. Since the size reference of the containment casing is on the end face of the fan casing, the containment casing is bonded to the titanium alloy machine. The casing is fixed, and the dimensional accuracy is high. If the containment casing is bonded with the titanium alloy casing after single-piece processing, the structural size of the containment casing after combination cannot be guaranteed. However, once the bonded assembly fails to meet the design requirements, it cannot meet the normal use requirements. Due to the particularity of the part structure, it cannot be disassembled and replaced, and even the par...

AI Technical Summary

Problems solved by technology

[0002] The aero-engine fan case is a case with an inner containment structure, and the containment case is made of resin-based aramid fiber composite material. Since the size reference of the containment case is on the end face of the fan case, the containment case is bonded to the titanium alloy machine. The casing is fixed, and the dimensional accuracy is high. If the containment casing is bonded with the titanium alloy casing after single-piece processing, the structural size of the containment casing after combination cannot be guaranteed.

However, once the bonded assembly fails to meet the design requirements, it cannot meet the normal use requirements. Due to the particularity of the part structure, it cannot be disassembled and replaced, and even the parts need to be scrapped, which has a huge impact on the pass rate of the parts. Large impact on parts processing cost and processing efficiency