| The ATC is the key functional unit of the machining center and improving its reliability is important to improve the reliability of the entering machining center. The project came from the national science and technology major projects of the high-end CNC machine tools and basic manufacturing equipment and the project’s object is the disc magazine and manipulator of QY011. Research by to build reliability test system, start the reliability performance test and analysis, find the main factors of affecting the reliability of disc magazine and manipulator, and provide the basis for improve of the domestic disc magazine and manipulator.In the basis of analysing the disc magazine and manipulator, designing the electrical system based on electrical design specification. Design the PLC controlling system based on the automatic tool change processes and functional requirements of the disc magazine and manipulator, and making the disc magazine and manipulator can reliable operation.Design the performance test system of the disc magazine and manipulator. According to the test purpose, selected the hydraulic pressure, air pressure, motor current, vertical robot and the cutter vibration as test content and completed the selection and installation of the appropriate hardware. Development of the system software based on the VB, with the function of the parameters setting, dynamic measurement and display, data storage, data processing and test report printing.Design the test program of the disc vibration, the manipulator vibration and motor current, and research on the change rules with the workstation of the disc vibration, the manipulator vibration and motor current by analyzing the test results. Using wavelet packet frequency band energy technology and RBF neural network to analysis the vibration signal of the disc, estimate the disc positioning accuracy and analysis the change of disc operation reliability from the perspective of disc positioning accuracy. |
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