The kinematical characteristics of the variable connection type planetary gearboxes having 3-degrees-of-freedom are studied on the planar velocities diagram, and a way to determine the optimal scheme of a gearbox of this type with the so called "Ratio Analytic Diagram" has been suggested, It is a new development based on the rules of planetary transmission of 2-degrees-offreedom.The method presented is useful in designing practical schemes for it is more convenient and simple in plotting and calculati...
This paper represents the basic principle of kinematic analysis of planar mechanisms carried out by using the vector loop equation. Three fundamental planar four-bar linkages are analysed. This can be also used for the analysis of plane multi-bar mechanisms. An example is given with the aid of a computer to show the process of solving actual problems.
Most of hob design for non-involute gears are nowadays taken by approximation method.For example,the normal sectional profile of hob worm therad is usually regarded approximately as its basic rack profile.Recently, some new methods have been developed in this respect but, perhaps, they appear overelaborate since the principle of spacing engagement is based on. For this reason , the paper offers a new design procedure for hob worm based on the planar engagement principle with the intention of simplific...