Compressor rotor blade body waviness processing technology and detection method

Abstract

The invention relates to a compressor rotor blade body waviness processing technology and a detection method. The compressor rotor blade body waviness processing technology comprises the steps of using software for numerical-control modeling; locally optimizing a numerical-control model; compiling for completing a numerical-control program; using the compiled numerical-control program for processing; and finishing a blade body, and only carrying out surface finishing when using a polishing machine for polishing the blade body so as to improve the surface roughness. An equipment advantage of afive-axis numerical-control machining center is fully utilized, the allowance of the blade body is accurately controlled, zero-allowance machining is carried out, the allowance has no need to be removed by polishing, and only the blade body needs to be subjected to surface finishing, so that the profile tolerance and the waviness of five-axis numerical-control machining can be integrally remained,the product quality and the product consistency are improved, and the workload of a polishing process can be further greatly reduced; and meanwhile, a three-coordinate measuring machine is adopted for detecting the waviness, so that a detection result can be accurately and objectively fed back, visual comparison has no need to be carried out through a standard specimen, and the influence of a human factor on a measuring result is greatly reduced.

Description

technical field [0001] The invention relates to a processing technology and a detection method for the waviness of a blade body of a compressor rotor blade. Background technique [0002] Surface waviness is the geometric unevenness of the surface whose spacing is greater than the surface roughness but less than the surface geometric shape error, which belongs to the geometric error between microscopic and macroscopic. [0003] At present, most aero-engine compressor rotor blades use standard samples to visually inspect the waviness of the blade body. Generally, the blade body is manually polished after CNC machining to remove the last 0.05-0.3mm margin to meet the final requirements of the design. After polishing to remove the margin It is easy to cause damage to the profile of the blade during the process, which is greatly affected by the skill level of the operator, which in turn affects the waviness of the blade body; when testing the waviness, it is greatly affected by h...

AI Technical Summary

Problems solved by technology

[0003] At present, most aero-engine compressor rotor blades use standard samples to visually inspect the waviness of the blade body. Generally, the blade body is manually polished after CNC machining to remove the last 0.05-0.3mm margin to meet the final requirements of the design. After polishing to remove the margin It is easy to cause damage to the profile of the blade during the process, which is greatly affected by the skill level of the operator, which in turn affects the waviness of the blade body; when testing the waviness, it is greatly affected by human influence and is easy to produce Judgment error, affecting product quality