Volume 08,Issue 04

Using Kinematic Models to Improve the Performance of Wing Root Drilling Processes

Authors

Yanting Liu , Xu Zhou, Qingzhao Li, Siyu Huang

Abstract
As one of the advanced parallel kinematic machines, the Exechon machine is used in advanced drilling process in the aerospace manufacturing industry. In order to investigate the trajectory and drilling accuracy of the Exechon machine, it is necessary to study and develop the kinematic model of the Exechon intended for future digitized drilling process of robotic wing root. Previous studies have explored the kinematics and errors of the Exechon in depth, but have not revealed the effect of errors on the Exechon drilling process, nor any method for evaluating the drilling accuracy. In this paper, based on the mechanical structure and robot kinematics of the Exechon machine, a kinematic model is identified and developed to predict the drilling performance and observe the trajectory under various additional errors. In addition, an evaluation method of the Exechon drilling accuracy was developed to validate the model with an average error of 0.023 mm, which is close to the performance of the Loxin machine. The kinematic model of Exechon proposed in this paper can approximate the digitized process of wing root drilling well, which impels a reference for error analysis and drilling accuracy evaluation of the Exechon machine.

Keyword: Parallel kinematic machine, Digitized process, Exechon kinematic model, Wing root drilling.

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