| Summary: | 碩士 === 國立中興大學 === 機械工程學系所 === 105 === In recent years, a lot of composites are used in many fields, including car or aerospace. New composite materials need new processing methods, thus ultrasonic vibration assisted machining is extremely important for precision machining. The advantage of ultrasonic vibration assisted cutting (UVAC) is effectively reduction the cutting force, reduction of burrs, increase processing efficiency, surface quality improvement and significant improvement tool life. UVAC can improve the traditional processing methods.
Ultrasonic vibration assisted cutting System (UVACS) can use frequency sweep to find the best resonant frequency for different horn or ultrasonic vibration assisted tool. UVACS has continuous-phase frequency tracking to find the best resonant frequency during machining, it improve the accuracy and stability of processing. However, when users change the horn or ultrasonic vibration assisted tool, they need to change the best resonant frequency. All of the pipeline is to restart frequency sweep, analyze the impedance position, remove the UVACS shell, set the frequency range for single-chip microcomputer data, test UVACS and others apparatus.
Thus, we developed of a user interface to help users operation UVACS, including five functions: user interface switch, Bluetooth distal frequency sweep, HMI change UVACS resonant frequency output range, automatic generation the frequency-phase figure and user interface adjustment the UVACS output amplitude. Our UVACS HMI improved the user working efficiency and accuracy. In addition, we developed visualized-software in computer, and the software could carried to other systems.
In this study, we analyzed the frequency sweep result of UVACS and precision impedance analyzer using two tools, we found that the two frequency sweep results are consistent. The ultrasonic vibration assisted tool adjusted amplitude by user interface, The maximum amplitude is 4μm and the minimum amplitude is 1μm. This study will help users easily and quickly to operate precision machining process.
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