A coaxiality measurement method for the aero-engine rotor based on common datum axis. (15th March 2022)

• Record Type: Journal Article
• Authors: Zhang, Maowei; Liu, Yongmeng; Wang, Dawei; Tan, Jiubin
• Is Part Of: Measurement. Volume 191(2022)
• Publication Date: 2022-03-15
• Subjects: Coaxiality -- Measurement -- Evaluation -- Common datum axis -- Tolerance; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2022.110696
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: A coaxiality measurement method for the aero-engine rotor is proposed based on common datum axis. The error transfer model of rotor is established. Comparative studies of connection centerline, single measuring datum, and common datum axis are developed. Modeling simulations and rotor experiments are performed to verify the effectiveness of the proposed method. Abstract: Accurate measurement of coaxiality for the aero-engine rotor is a prerequisite for precision assembly. Often a few acceptable measurements of concentricity taken along a single measuring datum are considered a guarantee of coaxiality for the aero-engine rotor. However, it is hard to ensure the measurement accuracy. This paper proposes a coaxiality measurement method based on common datum axis. To investigate the influence of different datum axes on the measuring value of rotor coaxiality, three measuring models of rotor coaxiality are established and compared, which are based on connection centerline, single measuring datum and common datum axis, respectively. Experiments show that the measuring value of coaxiality based on common datum axis is smaller and more accurate than other two different models of rotor coaxiality. The research can provide reference guidance for the measurement and control of the aero-engine rotor coaxiality during the assembly process.