The Analysis And Synthesis Of Geared Linkages

Geared linkages mechanisms can realize many kinks of motions; it is a kind of increasingly developing used widely combined mechanism. So it is necessary to research on it, make it meet the demands of production better. By new method, the article does some study on it.(1) Firstly, it presents the research of geared linkages on structural analysis and synthesis, kinematical analysis and synthesis, dynamical analysis and synthesis in existing literatures.(2) Analyze the structures of combined mechanisms by the Assur grouping method, divide combined mechanisms into basic mechanisms and groups, identify their transmission route, then show the structure and transmission route in block diagrams. Based on the block diagrams, classifies some combined mechanisms over again. Simultaneity, by the concept of geared linkages groups, classifies some quite disputed geared linkages as basic mechanisms.(3) Use the method of replacing the lower pairs by higher pairs to create new geared linkages groups from the planar Assur groups of six bars, then identify isomorphism according to their each character matrices got by the method of this article.(4) Choosing three high-ranking geared linkages groups from the geared linkages groups we got, do their kinematical analysis by splitting link-gear method, present the detailed process.(5) Analyze and summarize the design formulas of two kinds of cycloid gear- linkage slider mechanisms, design them by optimum method; point out some mistake in existing literatures. By differentiating their each displacement equations with respect to time, got their each velocity and acceleration equations.(6) Do kinetostatic analysis of the three high-ranking geared linkages groups, present the detailed process.(7) Completely balance the shaking force and shaking moment of two geared linkages with high-ranking geared linkages groups by the method of mass flow and derivative moment of inertia flow. The method can get the conditions of complete shaking force and shaking moment balancing without tedious process.