TY - JOUR
T1 - W 形金属封严环成形型面几何质量在机检测研究
AU - Pei, Haonan
AU - Du, Sizhe
AU - Luo, Ming
N1 - Publisher Copyright:
© 2024 Chinese Mechanical Engineering Society. All rights reserved.
PY - 2024/10
Y1 - 2024/10
N2 - Metallic sealing ring is a static sealing structure part widely used in aero-engine, and its profile forming accuracy is the key to the sealing performance, which is of great significance in reducing engine internal flow losses and improving engine thrust-to-weight ratio. Currently, the formed quality of metallic sealing ring mainly uses final destructive sampling inspection, and the lack of geometric quality inspection method in the forming process prevents timdy finding its forming defects. To address the above problems, an on-machine inspection research of geometric quality for metallic W-ring formed profile is carried out. A multi-level registration and distance thresholds based irregular section profile measurement point cloud preprocessing method is proposed, to solve the problem of serious outliers, missing and noise in the measurement point cloud. In order to realize the accurate extraction of complex geometric feature parameters, a minimum area bounding rectangle based profile geometric feature parameters extraction method, a medial axis based wall thickness extraction method, and a curvature and pre-location based circular feature parameters extraction method are proposed. Based on the dual laser scanners, an on-machine measurement system is built, and integrate the above methods, the hardware and software module are developed. Finally, the experimental results demonstrate the advantage of the method. Compared with the traditional destructive inspection results, the average relative error of 1.350% for the profile geometric feature parameters, 3.219% for the wall thickness and 1.372% for the circular feature parameters.
AB - Metallic sealing ring is a static sealing structure part widely used in aero-engine, and its profile forming accuracy is the key to the sealing performance, which is of great significance in reducing engine internal flow losses and improving engine thrust-to-weight ratio. Currently, the formed quality of metallic sealing ring mainly uses final destructive sampling inspection, and the lack of geometric quality inspection method in the forming process prevents timdy finding its forming defects. To address the above problems, an on-machine inspection research of geometric quality for metallic W-ring formed profile is carried out. A multi-level registration and distance thresholds based irregular section profile measurement point cloud preprocessing method is proposed, to solve the problem of serious outliers, missing and noise in the measurement point cloud. In order to realize the accurate extraction of complex geometric feature parameters, a minimum area bounding rectangle based profile geometric feature parameters extraction method, a medial axis based wall thickness extraction method, and a curvature and pre-location based circular feature parameters extraction method are proposed. Based on the dual laser scanners, an on-machine measurement system is built, and integrate the above methods, the hardware and software module are developed. Finally, the experimental results demonstrate the advantage of the method. Compared with the traditional destructive inspection results, the average relative error of 1.350% for the profile geometric feature parameters, 3.219% for the wall thickness and 1.372% for the circular feature parameters.
KW - feature extraction
KW - geometry quality
KW - metallic sealing ring
KW - on-machine inspection
KW - point cloud preprocessing
UR - http://www.scopus.com/inward/record.url?scp=85210750079&partnerID=8YFLogxK
U2 - 10.3901/JME.2024.20.035
DO - 10.3901/JME.2024.20.035
M3 - 文章
AN - SCOPUS:85210750079
SN - 0577-6686
VL - 60
SP - 35
EP - 50
JO - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
JF - Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
IS - 20
ER -