Research On The Parametric Modeling And Kinematic Characteristics For The Universal Coupling

As a kind of coupling commonly used in mechanical transmission, the universal coupling has the unique characteristic that provides a convenient means for transferring motion and power from one shaft to another regardless of whether the two shafts are collinear or not. It has many features such as high transmission efficiency, compact structure and strong misalignment compensation ability. And it’s maximum shaft angle between the axes of the two shafts can be up to35°～45°.In this thesis, accurate three-dimensional template model of the universal coupling is built by using the Top-Down modeling method based on structure and geometry analysis of the universal coupling. By using data stored in Access database and retrieving data by the method of MFC ODBC, the seamless connection between dynamic link library and Pro/E4.0is achieved through using the secondary development tool Pro/Toolkit of Pro/Engineering combined with Microsoft Visual C++6.0and MFC visualization dialog design technology. And then the parametric design system of the universal coupling is developed.Based on theoretical analysis of kinematic characteristics of the universal coupling, the kinematic simulation is done by importing3D model of the parametric design system into virtual prototyping software ADAMS and the kinematic characteristic curves are acquired. Finally, the universal coupling transmission rig of Southwest Jiaotong University Mechanical Basic Experimental Teaching and Demonstration Center is used to acquire its real kinematic characteristic curves. Through relevant analysis and research combined with the results of theoretical analysis, the kinematic simulation and the experimental test, the validity of this simulation is verified, and some conclusions which have engineering guidance significance are put forward.