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Method for processing blade tenon

A processing method and blade tenon technology are applied in the field of aero-engine compressor blade processing, which can solve the problems of extremely high manufacturing precision of forming milling cutters, fast wear of forming milling cutters, low processing efficiency, etc. Simple process and high processing efficiency

Active Publication Date: 2022-02-11
AECC AVIATION POWER CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The arc tooth shape of the form milling cutter milling method is directly guaranteed by the form milling cutter. The main disadvantages of this processing method are: 1) The machining accuracy and quality of the arc tooth tenon profile depends on the profile shape accuracy of the form milling cutter, especially the arc Blades with small tenon and tenon profiles have extremely high requirements for the manufacturing precision of the forming milling cutter; 2) The forming milling cutter wears quickly, costs high, and the processing cost is high; 3) A special forming milling cutter must be used, and the preparation period is long
Turning adopts the method of multi-station combined processing. The main disadvantages of this processing method are: 1) low processing efficiency; 2) poor consistency of each turning station, low processing accuracy and low pass rate

Method used

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  • Method for processing blade tenon
  • Method for processing blade tenon

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Embodiment

[0037] The blade of an aero-engine with dovetail arc tooth tenon, the material is TC11, the structure is as follows figure 1 As shown, the section of the dovetail arc tooth tenon is as follows figure 2 As shown, the minimum profile of the dovetail arc tooth tenon is ±0.01, and the machining surface of the dovetail arc tooth tenon is composed of the outer edge plate surface A-B section, the outer edge plate surface E-F section and the dovetail type B-C-D-E section. The concave arc radius of the A-B section of the outer edge plate surface and the E-F section of the outer edge plate surface is R0.5mm. The angle of the dovetail type B-C section and the dovetail type D-E section is 45°, and the arc radius is R1.4mm. Its processing plan is:

[0038] 1. The dovetail arc tooth tenon is processed by the milling method of the five-coordinate machining center. The rotation axes of the five-coordinate machining center are the A axis and the B axis respectively;

[0039] 2. When the do...

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Abstract

The invention provides a blade tenon processing method. The blade is clamped on a five-coordinate machining center, the dovetail-shaped arc-tooth tenon outer edge plate of the blade is processed by a straight-shank milling cutter with a bottom angle, and the dovetail is processed by a tapered milling cutter. The dovetail structure of the arc tooth tenon. In order to ensure the processing quality of the blade, improve the processing efficiency and reduce the processing cost.

Description

technical field [0001] The invention belongs to the processing technology of aero-engine compressor blades, and relates to a blade tenon processing method. Background technique [0002] A dovetail type circular arc tooth tenon blade structure for a certain type of engine compressor see figure 1 , the blade is dovetail type arc tooth tenon, the material is titanium alloy. At present, the main methods of machining titanium alloy compressor blade dovetail-shaped arc tooth tenon are the milling method and turning method using forming milling cutter. The arc tooth shape of the forming milling cutter is directly guaranteed by the forming milling cutter. The main disadvantages of this processing method are: 1) The machining accuracy and quality of the arc tooth tenon profile depends on the contour shape accuracy of the forming milling cutter, especially the circular arc. Blades with small tooth tenon profile have extremely high requirements on the manufacturing precision of the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/00
CPCB23C3/00
Inventor 冯全全彭军全儒振周奋蒲海龙冯帆贾帅杨照坤
Owner AECC AVIATION POWER CO LTD
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