Method for machining flat groove on front edge of low-pressure air intake guide blade of aeroengine

An aero-engine and guide vane technology, which is applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., and can solve the problems of low qualified rate of processed products.

Active Publication Date: 2012-06-27
AECC AERO SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the deficiencies in the prior art low-pressure air intake guide vane leading edge flat groove processing method, the purpose of the present invention is to provide a high-efficiency machining method for the aero-engi

Method used

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Embodiment 1

[0017] The processing object is the narrow and deep flat groove on the edge of the air inlet side of the low-pressure intake guide vane of a certain type of aeroengine. The width of the flat groove is 2mm, the depth is 40mm, and the length is 470mm. On the edge of the shape, the machining allowance on the depth of the entire notch is 40-23.2mm (the allowance at both ends is large, and the allowance in the middle main body is small).

[0018] The processing technology is as follows;

[0019] (1) Clamp the two ends of the blade and the middle blade part on the back of the blade basin with the tooling fixtures that are connected to each other, and fix the blade on the working table of the milling machine;

[0020] (2) First use a three-sided edge milling cutter with an enlarged chip pocket, which is composed of a main edge and an auxiliary edge located on both sides of the main edge, to process the two ends of the groove, and then move the tool 5 times to complete the grooving an...

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Abstract

The invention discloses a method for machining a flat groove on the front edge of a low-pressure air intake guide blade of an aeroengine, which mainly comprises: clamping the two ends of a blade and the middle blade profile part on the back of a blade basin by using a tool clamp, and fixing the blade on the working table of a miller; and coarsely grooving and completing main machining amount by using a side and face milling cutter, finely milling the residual amount by using an arc-shaped milling cutter matched with the arc shape at the bottom of the groove, and machining the flat groove by designed size and shape. The machining method disclosed by the invention solves the problems of cutter clamping, blade breaking, blade through milling and high rejection rate of the machining of the flat groove on the front edge of the low-pressure air intake guide blade of the aeroengine in the prior art, increases the low-pressure air intake guide blade machining rate to 90 percent from the original 50 percent, and greatly reduce the machining and manufacturing cost of the blade.

Description

technical field [0001] The invention relates to a machining method of an aero-engine blade, more specifically, relates to a machining method of a flat groove at the leading edge of a low-pressure intake guide vane of an aero-engine. Background technique [0002] In the field of aero-engine blade processing, there are many processing methods involved due to the different shapes of the airfoil (airfoil body) and tenon of the blade. The field of blade processing is still a new topic. According to the design requirements of the overall structure of a certain type of aero-engine, it is necessary to process a 470mm long flat groove with a width of 2mm and a depth of 40mm on the blade edge of the inlet side of the low-pressure inlet guide vane and run through the edge of the inlet side of the blade. . The flat groove forms a ventilation hole after the blade is riveted with its matching baffle plate. The processing of this flat groove, the method in the prior art is to fix the bl...

Claims

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Application Information

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IPC IPC(8): B23C3/28B23Q3/06
Inventor 罗仕春刘小钰
Owner AECC AERO SCI & TECH CO LTD
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