Continuous hot extrusion saddle-shaped barrel section butt joint assembling method

Abstract

The invention discloses a continuous hot extrusion saddle-shaped barrel section butt joint assembling method. The method comprises the steps that a plurality of sampling points are arranged on an inner spigot of a saddle-shaped barrel section to be assembled, geometric coordinates of each sampling point are collected point by point, and a contour curve model of the inner spigot is constructed according to the geometric coordinates; the saddle-shaped barrel section is corrected according to the contour curve model to obtain a corrected saddle-shaped barrel section; and mirror image processing is performed on the contour curve model to determine a contour model of an end frame outer spigot matched with the inner spigot, an end frame is prepared according to the contour model of the end frame outer spigot, and butt joint assembly is performed on the corrected saddle-shaped barrel section and the end frame. The technical problems of difficult butt joint and poor butt joint precision of a hot extrusion saddle-shaped barrel section and an end frame in the actual butt joint process in the prior art are solved.

Description

technical field [0001] The present application relates to the technical field of mechanical processing, and in particular to a method for butt-joint assembly of saddle-shaped barrel segments by continuous hot extrusion. Background technique [0002] At present, in the field of aerospace, as various types of aircraft and projectiles have higher and higher requirements for maneuverability and load capacity, their structures also put forward higher requirements for lightweight and high strength. Due to its integral molding characteristics, the continuous hot extrusion barrel section is light in weight, high in strength, and saves raw materials. Compared with the previous casting molding, plate welding structure, and thick plate machining, it has shown greater advantages. Therefore, continuous hot extrusion parts are more and more applied to the aerospace field. [0003] However, since the saddle-shaped barrel section is continuously hot-extruded at high temperature, affected b...

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Problems solved by technology

[0004] The technical problem to be solved by this application is to provide a continuous hot-extruded saddle-shaped barrel section in view of the difficulties and poor docking accuracy in the actual docking process of the hot-extruded saddle-shaped barrel section and the end frame in the prior art. In the method of butt joint assembly, in the scheme provided by the embodiment of the present application, the contour curve model of the inner spigot is constructed through the geometric coordinates of multiple sampling points, and then the saddle-shaped barrel section is corrected and processed through the contour curve model of the inner spigot, At the same time, the outer seam of the end frame that is docked with it is processed adaptively, which effectively solves the problem of difficult docking between the hot-extruded saddle-shaped barrel section and the end frame and poor docking accuracy.

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