.2 K-v Cycloid Drive Precision Of Analysis And Simulation Study

By comparing with the conventional gear reducer, the pin-cycloid planetary reducer yields several advantages, such as high reduction ratio in compact space, greater load capacity, higher ratio of torque to weight, high efficiency and long life. They have been widely used in many industrial fields. At present, the research of this type reducer is focused on the rotational transmission error. This thesis mainly is to investigate the rotational transmission precision simulation of the pin-cycloid planetary reducer based on mass-spring equivalent model. It's extremely meaningful for improving the transmission precision and reducing manufacturing cost through implementing comparison of pre-distributed schemes before manufacturing. The main works include:On the basis of mass-spring equivalent model method, the rotational transmission error model is established for analyzing the pin-cycloid planetary reducer, which consists of two cycloid gears, three cranks and a disc-shaped output shaft. Further, the stiffness matrix and force vector in this model are derived to build a mathematical model for simulation.The method of developing the transmission precision simulation system of the pin-cycloid planetary reducer by using VC++ to call functions in the math library of MATLAB under the environment of Windows2000/XP is discussedAfter analyzing the implement principle and characteristics of three interface technology for VC++ and MATLAB mixed programming and the characteristics of the simulation system, the appropriate interface technology is selected.For the first time, the design idea departed the front-end and background applied for database system is applied to the simulation system development. The total design thought of the simulation system is presented. Via the Object-Oriented programming and MATLAB interface technology, the software frame, functional modules, user interface design and simulation software development is completed. Meanwhile, the design method for this system also provides a new way for similar systemdevelopment.Using the developed simulation software, the rotational transmission precision of the pin-cycloid planetary reducer under different error parameters is simulated, and the result agrees so well with the experimental one. On the basis of the simulative results, the sensitivity of different kinds of errors is studied to provide the guide for the design of the pin-cycloid planetary reducer.