Aero-engine blade profile reconstruction based on adaptive step size bat algorithm and visualization of machining error

Abstract

High-precision profile reconstruction is a key issue in the profile detection and visualization of aero-engine blades. A method based on adaptive step size bat algorithm (ASSBA) for blade profile reconstruction and an adaptive mesh model for visualization analysis of the key machining errors are proposed. Firstly, the original bat algorithm (BA) is improved to introduce the global stage and local search stage. Then, combined with the node layer characteristics of the blade measurement data, the ASSBA is used to fit the optimal surface. Further, the adaptive mesh is planned on the blade profile to extract various evaluation parameters. Finally, the algorithm analysis and verification are carried out based on a certain type of blade. The results show this reconstruction method can get the fitted surface more quickly and accurately than other iterative methods. Simultaneously, the visualization method and corresponding software system can intuitively visualize the blade profile error, the twist deformation error, the swept deformation error, the bending deformation error and the cross-section line profile error.

Process parameters optimization model for robotic abrasive belt grinding of aero-engine blades

“…Therefore, to promote the transformation of the global manufacturing industry to an energy-saving model, it is of great strategic and practical significance to study how to improve the manufacturing technology and process to reduce carbon emissions [4][5][6]. Titanium alloy blade is an important core part of aero-engine, and its processing quality has an important impact on the performance and life of aero-engine [7][8][9], and a large amount of carbon emissions will be generated during its grinding process. The low carbon processing aero-engine titanium alloy blade is taken as the research object.…”

Influence of Part Size Error on the Characteristics of a Feeding Transmission Mechanisms based on a Conjugate Cam-Spatial Linkage

“…The smaller tolerance of part unnecessarily calls for high-precision machining processes, which leads to the increasing difficulty and cost of manufacturing [1]. On the other hand, high tolerance parts make the production unqualified, such as the blade of the aero engine [2]. Therefore, balancing cost and performance is one of the most critical tasks in the design process.…”

A Novel Process Chain for the Automated Repair of Leading Edges in Aircraft Engines

“…Nearly all studies use shape recording methods, but often, these are manual. For the described methods, the generated point clouds have to be reconstructed into curves or surfaces, for which some algorithms are described [29,30].…”