ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Automatic drilling technology of oval hole
Received date: 2016-01-13
Revised date: 2016-01-31
Online published: 2016-04-12
Supported by
National Natural Science Foundation of China (51575479)
In order to solve the automatic drilling technique problem for the oval hole and enhance the reliability of the integrated wing assembly, on the basis of deeply analyzing the shape feature and processing principle of oval hole, the formula of swing center is deduced to determine the relative position between the countersink and swing center. According to the forming principle of oval hole, some requirements about the relative angular deviation of the end-effector components are put forward and the calibration task is conducted. The theoretical computing results of the shape parameters of oval hole are verified and adjusted by experiments using the calibrated end-effector. The basic forms of the shape deviation and the related adjusting methods are summarized. The adjusted parameters are used to drill NAS6 oval hole on aluminum. The results had the precision of 0.05 mm on the long and short diameters, 0.02 mm on the height deviation between the nut and the work-piece which satisfied the aircraft wing assembly requirements. The automatic drilling of oval hole is realized.
Key words： oval hole; swing center; end-effector; precision calibration; shape adjustment
DONG Huiyue , TANG Xiaobo , HE Fengtao , LIU Shuntao . Automatic drilling technology of oval hole[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2016 , 37(11) : 3554 -3562 . DOI: 10.7527/S1000-6893.2016.0081
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