Funnel part drawing die for aircraft engine

Abstract

The invention relates to the field of aircraft engine machining, particularly to a funnel part drawing die for an aircraft engine. The funnel part drawing die for the aircraft engine comprises a cavity die, an edge pressing ring and a terrace die, wherein the edge pressing ring can be matched with the cavity die, and the inner wall of the edge pressing ring is matched with the opening of the maininner wall of the cavity die; the terrace die can penetrate through the edge pressing ring and is matched with the main inner wall of the cavity die; the inside of the cavity die is provided with morethan two auxiliary inner walls corresponding to a single funnel part, the parts of the auxiliary inner walls, which correspond to the tail end of the funnel part, are oppositely arranged and connected with each other, and all the auxiliary inner walls are neighboring to one another and are separated from one another at equal angles; the terrace die is matched with the cavity die. The funnel partdrawing die for the aircraft engine can enhance the processing qualification rate, the yield rate and the processing efficiency of the funnel part of the aircraft engine.

Description

technical field [0001] The invention relates to the field of aircraft engine parts processing, in particular to a drawing die used for a funnel part of an aircraft engine. Background technique [0002] There is a part on a certain type of engine that looks like a half funnel, such as Figure 6-9 , its general shape is like a half funnel, which is a symmetrical structure, with an inward concave surface 12, and its two side edges are provided with laterally extending flanges 14. [0003] For this part, the current processing method is to use a mold to stretch the blank into an intermediate part (called an intermediate part), then cut the part, and finally complete the processing of this part. [0004] Among them, the stretching process is very difficult and inefficient. Since the shape is relatively irregular, and it is used on an aircraft engine, the requirements for all aspects of the parts are very high, so multiple stretches are required, especially for semi- The tail end...

AI Technical Summary

Problems solved by technology

[0004] Among them, the stretching process is very difficult and inefficient. Because the shape is relatively irregular, and it is used on an aircraft engine, it has very high requirements on all aspects of the part, so it needs to be stretched many times, especially for semi- The tail end 11 of the funnel-shaped structure (the small end such as Image 6 , 7 and 9 are marked as the head end 10, and the opposite end is as Image 6 , 7 and 9 are marked as the tail end 11, the outer contour of the tail end is a symmetrical structure concave inwards) prone to insufficient stretching resulting in insufficient dimensions of the outer contour (the tail end itself is the deepest part of the inward concave surface, Its deformation is larger than that of other parts, and its outer contour is a symmetrical structure that is concave inward, so when it is stretched now, it is easy to cause its outer contour size to be insufficient, and post-processing cannot make up for it. If the size is too large, it will It can also be cut and repaired, but if the size is small, there is no way to repair it, and welding and other methods cannot be used. Such parts do not meet the requirements for use in aircraft engines), and the pass rate and yield rate are low. At the same time, due to multiple stretches, the processing efficiency also very low

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