Designing and manufacturing method of pad tile for adjusting aviation engine blade rolling

Abstract

The invention discloses a designing and manufacturing method of a pad tile for adjusting aviation engine blade rolling. The designing method includes: analyzing feasibility of using the pad tile to adjust the thickness of an aviation engine blade rolling die; designing the inner diameter size and outer diameter size of the pad tile; designing the outer contour of the pad tile and fixing the positions of screw holes; designing eccentric angle position and eccentricity of the pad tile; selecting materials and hardness of the pad tile. The manufacturing method includes: selecting a tubular blank according to designing size; lathing the inner diameter and outer diameter of the tubular blank; grinding the inner diameter of the tubular blank; cutting the tubular blank into an annular piece with the width containing three pad tiles; performing heat treatment on the annular piece; cutting the annular piece into pad tiles; using a cylindrical grinder to grind eccentric excircles; sharp edge rounding and bluing; detecting the pad tiles. By using the pad tile to adjust the thickness of the aviation engine blade rolling die, the service life of the aviation engine blade rolling die can be increased by more than 10 times. Compared with a linear cutting method, the manufacturing method is low in production cost, high in machining precision and time saving.

Description

technical field [0001] The invention belongs to the field of blade machining, in particular to a design and manufacturing method of a pad tile for rolling adjustment of aeroengine blades. Background technique [0002] At present, the manufacture of aero-engine blades adopts precision rolling without margin and precision forming technology of wool. Due to the characteristics of low manufacturing cost, high production efficiency and superior product structure and performance compared with conventional manufacturing processes, this technology has become an advanced technology for blade manufacturing and has attracted much attention from developed countries in the world. [0003] The blade rolling die is the most important tool for blade forming. During the processing of the blade rolling die, a repair allowance of about 0.1-0.2mm is left for the trimming of the die. During the repair process of the mold, the thickness of the mold gradually decreases. At this time, it is neces...

AI Technical Summary

Problems solved by technology

However, the adjustment of the interference of the blade rolling mill is limited, the maximum is 0.3mm, if the adjusted interference is too large, it will cause damage to the rolling mill

However, when the trimming amount on one side of the rolling die is greater than 0.15mm, the die will be scrapped.

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