Optimal Design and Analysis of Polygon Wave Generator of Harmonic Drive

• Main Authors: LIN,WEI-CHIEH, 林暐傑
• Other Authors: HUANG,SHYH-CHOUR
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/21131857845383941490

碩士 === 國立高雄應用科技大學 === 機械工程系 === 105 === In this paper, the Taguchi method is used to optimize the harmonic drive and analyze the influence of the polygon wave generator in the harmonic drive . By useing of different shapes of the wave generator, The shape of the flex spline changes, so that the harmonic drive will cause the flex spline and the circular spline meshing teeth difference, in order to change the overall speed ratio of the harmonic drive, and the use of ANSYS Workbench analysis of the flex spline bear polygon waveform, the 3D graph of the experimental configuration of the Taguchi method is designed by using CREO 2.0 (3D graphics software). The stress, strain and deformation are analyzed. In this research, ANSYS Workbench, a computer aided engineering analysis software, was used to simulate the three key components of the harmonic drive, Wave Generator, Flex Spline and Circular Spline. And quickly obtain the required value of the deformation to bear the deformation, the experiment will use Static Structural module to obtain structural strength, the text of the Taguchi method control factors are: wave generator shape (cam number), involute teeth shaped pressure angle, flex spline thickness constant. In which the flex spline and the circular spline are used in the common angle of the universal involute gear. 14.5∘, 20∘, 22.5∘. The shape of the wave generator is made of double cam, three cam, five cam, Triangular and positive pentagonal design, flex spline thickness constant of 0.01,0.02,0.03, for experimental analysis, and were carried into the ANSYS Workbench software analysis to find out what shape of the wave generator will make the flex spline has a significantly smaller Stress, strain and the amount of deformation of the ability to collect the value of Taguchi method of small experiment. Finally, the modal analysis is carried out to find out the natural frequency of each wave generator designed in this paper, so that the designer can avoid inputting the same vibration frequency to damage the wave generator. The results of ANSYS Workbench show that the number of cam has a significant effect on the harmonic drive. The more the number of cam, the stress and strain of the flex spline member deformation will increase abruptly, but the simulation results will not cause in permanent deformation of the flex spline components, it is known that it is possible to use a polygon wave generator to create a harmonic drive system with a wide speed ratio. At the end of this paper, ANSYS Workbench modal analysis is carried out to find out the natural frequency of the three wave generators. After the natural frequencies of the waveform generators are obtained by the convergence analysis method, 10 kinds of modal analysis Vibration mode state of the total deformation test, the results of the vibration frequency does reach the convergence of the natural frequency of the analysis occurred when the sharp deformation, and finally bear to use.