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Polishing method for compressor blades of small and medium-sized aero-engines

A technology of aero-engines and compressors, which is applied in grinding/polishing equipment, grinding machines, metal processing equipment, etc., and can solve the problems of easy over-polishing and under-polishing polishing accuracy, etc.

Active Publication Date: 2021-07-06
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-sized aero-engines
  • Polishing method for compressor blades of small and medium-sized aero-engines
  • Polishing method for compressor blades of small and medium-sized aero-engines

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Embodiment 1

[0069] A polishing method for a compressor blade of a small and medium-sized aeroengine comprises the following steps:

[0070] S1. The area division of blade polishing, according to the margin distribution of the number milling process before polishing, the difficulty of polishing the front and rear edges of the blade and the transition R of the blade root, the blade surface polishing area is divided into six areas, including the blade basin as the polishing area A. The back of the blade is the polished area B. The blade root transition R is the polished area C. The intake and exhaust edges are the polished area D. The overlap between the blade body and the intake and exhaust edges is the polished area E. The tenon flow channel is the polished area F, determine the polishing trajectory of each polishing area, comprising the following steps:

[0071] S11. Rough polishing of leaf basin and leaf back: Carry out longitudinal rough polishing in polishing area A, and move the knife...

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Abstract

The invention discloses a polishing method for compressor blades of small and medium-sized aero-engines, which comprises the following steps of: dividing blade polishing areas, dividing a blade profile into a plurality of polishing areas, determining a polishing track and selecting a polishing tool; selecting polishing parameters of different areas, and determining the different polishing parameters according to the space shapes, the space sizes and the machining allowances of the different areas of the blade; performing polishing method verification: performing polishing method verification on the obtained polished blade according to the polishing area, the polishing track and the polishing parameters, and comparing the obtained polished blade with a manually polished blade; determining a polishing method, and correcting polishing area division, polishing tracks of all areas and polishing parameters of all the areas in combination with a verification test; and according to the corrected polishing area division, the polishing track of each area and the polishing parameters of each area, conducting polishing on the compressor blades of the small and medium-sized aero-engines.

Description

technical field [0001] The invention relates to the field of polishing engine compressor blades, in particular to a polishing method for small and medium aeroengine 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 an aero-engine. The quality of the blades directly affects the performance and life of the engine. Blade polishing is an important process to improve blade working life, fatigue strength and aerodynamic performance. Manual polishing of blades has unstable quality, poor precision of processed blades, and cannot meet the processing requirements of modern high-performance aeroengine blades. It is urgent to use mechanized polishing methods for polishing. However, due to the small size and large curvature changes of 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 shape of the blad...

Claims

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Application Information

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Patent Type & Authority Applications(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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