Polishing method for compressor blades of small and medium aeroengines

An aero-engine and compressor technology, which is used in grinding/polishing equipment, metal processing equipment, manufacturing tools, etc., and can solve the problems of under-polishing polishing accuracy and easy over-polishing

Active Publication Date: 2022-03-25
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a polishing method for small and medium-sized aeroengine compressor blades to solve the problems of over-polishing, under-polishing and polishing accuracy when processing small-sized, complex and large-curvature blades by manual polishing and abrasive belt polishing. low technical issues

Method used

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  • Polishing method for compressor blades of small and medium aeroengines
  • Polishing method for compressor blades of small and medium aeroengines
  • Polishing method for compressor blades of small and medium aeroengines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The polishing method for compressor blades of small and medium aero-engines includes the following steps:

[0070] S1. The area of ​​blade polishing is divided into six areas, including the blade basin as the polishing area, according to the distribution of allowances in the milling process before polishing, the polishing difficulties at the front and rear edges of the blade and the transfer R of the blade root. A. The back of the blade is the polishing area B, the blade root transition R is the polishing area C, the intake and exhaust edges are the polishing area D, the overlap between the blade body and the intake and exhaust edges is the polishing area E, and the tenon runner is the polishing area F. Determine the polishing trajectory of each polishing area, including the following steps:

[0071] S11. Rough polishing of the blade basin and blade back: perform longitudinal rough polishing in the polishing area A, the blade trajectory is along the blade basin profile,...

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PUM

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Abstract

The invention discloses a polishing method for a small and medium-sized aeroengine compressor blade, which includes: dividing the blade polishing area, dividing the blade profile into a plurality of polishing areas, determining the polishing track and selecting a polishing tool; selecting polishing parameters for different areas, Different polishing parameters are determined according to the spatial shape, spatial size and machining allowance of different regions of the blade; polishing method verification, according to the polishing area, polishing track and polishing parameters, the polishing method is verified for the obtained polishing blade, and compared with the manual polishing blade Comparison; determine the polishing method, combined with the verification test to correct the division of polishing areas, the polishing trajectory of each area and the polishing parameters of each area; according to the revised division of polishing areas, the polishing trajectory of each area and the polishing parameters of each area, carry out Polishing of compressor blades for small and medium aeroengines.

Description

technical field [0001] The invention relates to the field of engine compressor blade polishing, in particular, to a polishing method for small and medium aero-engine compressor blades. Background technique [0002] There are about 1,000 to 3,000 blades in an aero-engine. The blades are the core parts of the aero-engine. The quality of the blades directly affects the performance and life of the engine. Blade polishing is an important process to improve the working life, fatigue strength and aerodynamic performance of blades. Manual polishing of blades has unstable quality, poor precision of processed blades, and cannot meet the processing requirements of modern high-performance aero-engine blades. It is urgent to use mechanized polishing methods for polishing. However, due to the small size and large curvature change of the small and medium-sized aero-engine compressor blades, automatic polishing is a very difficult task. As a result, the shape accuracy is too poor, the sha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/14B24B1/00
CPCB24B19/14B24B1/00
Inventor 龙永胜周辉炼项德义苏庆怀王科昌易鹏
Owner CHINA HANGFA SOUTH IND CO LTD
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