Processing Technology Research Of Electromechanical Integrated Piezoelectric Harmonic Drive System

Piezoelectric harmonic drive system is a new kind of drive system using the harmonic drive principle and the converse piezoelectric effect of piezoelectric ceramic. The drive system has a compact structure, high positioning accuracy and system response speed, large transmission ratio, high transmission efficiency, etc. In the fields such as aerospace, precision instruments, tiny robots, medical equipment and biology, it has extensive application prospect. This paper mainly studies the processing technology of the key parts of the electromechanical integrated piezoelectric harmonic drive system.This paper introduces the working principle of this new type piezoelectric harmonic drive system. The basic parameters of the drive system are given, and the solid design of the drive system is done with 3D software Solid Works. The interference test is done which proves the rationality of the structure design of the system. With CAD/CAM software, NC machining simulation of the elements for the drive system is completed. Checking the phenomenon such as undercutting, less cutting, interference between the cutter and workpiece, collisions between the cutter and holder, etc are done. Using UG NX8.0 NC machining software, NC automatic programming of the drive system is completed. Taking movable tooth rack and the shaft as an example, post processing calculation method of the drive system is given. The post processing of NC machining for the drive system is done. The processing plan of NC machining for the drive is proposed. It includes selecting NC machine tool and cutter, determining feed lines, positioning and clamping way of the workpiece, selecting cutting parameter. The elements of the drive system are produced. Amounting plan of the drive model machine is determined. Amounting, adjusting and testing of the model machine are done. The principle test and output torque test of the model machine are completed. The results illustrate principle validity of the electromechanical integrated piezoelectric harmonic drive system.