Method used for processing aeroengine guide vane small lock plate

Abstract

The invention provides a method used for processing an aeroengine guide vane small lock plate. The method comprises following steps: (1) guide vanes are fixedly arranged on a frock clamp, wherein outer periphery of a big lock plate is taken as axial positioning datum, vane basin diametral planes of a small lock plate and the big lock plate are taken as radial positioning datum, and air inlet edges of the big lock plate and the small lock plate are taken as a positioning plane; (2) an assembly milling cutter is composed of milling blades, and is used as a milling processing cutter, wherein each of the milling blades is provided with a plurality of processing surfaces such as a processing guide vane small lock plate air inlet edge concave reverse angle structural plane, an air inlet edge structural groove, an air outlet edge structural groove, and an air outlet edge concave right angle structural plane; (3) processing of the plurality the processing surfaces is realized at the same time using the milling blades by adjusting milling blade installation dimensions of the processing surfaces of the guide vane small lock plate; and (4) after adjustment of the milling blade installation dimensions, one-pass processing is adopted so as to complete processing of the plurality of processing surfaces of the guide vane small lock plate. The method is capable of increasing processing precision and stability of processing quality greatly, and improving processing production efficiency significantly.

Description

technical field [0001] The invention belongs to the technical field of aero-engine guide vane processing, and in particular relates to a method for processing a small locking plate of an aero-engine guide vane. Background technique [0002] The engine guide vane is one of the core components of an aero-engine. It has high requirements for its material and installation accuracy. The guide vane is a typical special-shaped part. Due to the difficulty in processing, installation and positioning, it is another part of the guide vane installation structure. The finishing of the large and small locking plates at both ends has always been the key and difficulty in the processing of the guide vane, especially the processing of the small locking plate of the guide vane, which is more difficult to process the guide vane due to the large number of processing surfaces that require finishing. [0003] The processing method of the small lock plate of the guide vane is currently to cast and...

AI Technical Summary

Problems solved by technology

The guide vane is fixed in the square box by casting. During the processing of each processing surface of the small lock plate of the guide vane, the guide vane is easy to vibrate in the square box, so the cutting allowance of the cutting tool should not be too large, which makes the Processing efficiency is low

Even if a small cutting allowance is used, the parts will vibrate to a certain extent, resulting in low machining accuracy of the product

On the other hand, in this multi-process processing method, the square box needs to be removed after the previous process is completed, and the guide vanes must be reinstalled for clamp positioning and benchmark conversion before the next process can be processed. Therefore, each process requires a lot of time. The positioning of the mounting clamp for a long time leads to low overall processing efficiency, and it is difficult to ensure the dimensional accuracy and dimensional stability after repeated clamping and positioning and datum conversion, resulting in low precision of processed products and poor stability of processing quality

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