Ultrasonic vibration spindle key components design and dynamics analysis

In order to achieve ultrasonic vibration assisted drilling, a set of ultrasonic vibration machining system is demanded, and ultrasound parts are the key technology parts of the ultrasonic vibration. Firstly, this paper proposed a design scheme which is used for ultrasonic vibration assisted drilling on micro-hole, after analyzing the basic principle of ultrasonic vibration assisted drilling system, the structure and design method were determined, then the connecting parts of machining system were improved. The dynamic model of machining system key parts was established, then dynamic analysis was performed on the model through ANSYS Workbench software, and modal and harmonic response characteristics were obtained, the feasibility of design was validated. Finally, the vibration drilling of micro-hole was carried on through drilling experiment.