Spline structure body with multiple convex keys on inner layer wall of aluminum alloy hollow sleeve and machining method

Abstract

The invention relates to the technical field of hollow structural parts, and discloses an aluminum alloy hollow sleeve inner layer wall multi-convex-key spline structural body and a machining method.The aluminum alloy hollow sleeve inner layer wall multi-convex-key spline structural body comprises a machined hollow spline structural shell, one end of the hollow shell is provided with a five-spline used for being connected with a connector spline, and the other end of the hollow shell is provided with an annular table connecting thread used for matched connection; a hollow sleeve round boss is arranged between the five splines and the annular table connecting threads, a key side annular groove is formed between the hollow sleeve round boss and the spline outer ring, and triangular teeth are evenly distributed on the end opening face of the spline inner ring at the end, connected with the threads, of the annular table. The method for machining the hollow spline structure comprises the following steps: turning outer circle knurling, turning an inner hole, threads and an inner groove through a numerically controlled lathe and a milling machine, and then drilling and milling the threads. The cutter is reasonable in structural design, convenient to machine, simple to operate and long in service life, the problem of coaxiality deviation is solved, the machining difficulty is reduced, the requirement of a design process is met, the structural accuracy is guaranteed, and the machining process level and the machining efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of hollow structural parts, in particular to a spline structure with multiple convex keys on the inner wall of an aluminum alloy hollow sleeve and a processing method. Background technique [0002] In recent years, the pace of production and construction in the aerospace field has been accelerating, and the demand for aluminum alloy hollow structural parts in various production fields has increased significantly. Aluminum alloy hollow structural parts are important components in mechanical equipment. , The structure is more complex, and the processing is difficult. The traditional processing is to first cut the material from the ordinary car or the CNC car, and then process it in different procedures, which is inefficient. The secondary clamping of the cut parts easily affects the coaxiality of the parts. In addition, the inner key of the aluminum alloy hollow structure is not easy to process, and it is ge...

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Problems solved by technology

[0002] In recent years, the pace of production and construction in the aerospace field has been accelerating, and the demand for aluminum alloy hollow structural parts in various production fields has increased significantly. Aluminum alloy hollow structural parts are important components in mechanical equipment. , The structure is relatively complex, and the processing is difficult. The traditional processing is to first cut the material by the general car or the CNC car, and then process it in different steps. The efficiency is low. The secondary clamping of the cut part will easily affect the coaxiality of the part.

Also, for example, the internal key of the aluminum alloy hollow structure is not easy to process, and it is generally processed by ordinary car slotting machine, but the processing efficiency of slotting machine is low and the processing cost is high.

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