| Harmonic gear transmission mechanism as a new type of transmission, since the inception ofthe last century, with its unique properties and is widely used. But with the development of technology, the existing harmonic gear drives can no longer meet the needs of scientific research and the field due to its requirements, the need to improve its performance.This article from the overall design of harmonic gear start, make sure the flexible wheel structure and the associated geometry, and then determine the wave generator and the justround the structure and geometry. And flexible wheel cylinder of the stress and strain analysis and calculation of the force on the teeth is also analyzed.On this base,in order to improve quality, analysis the double-arc profile for meshing the superiority of the gnawing. Introduced to the double-arc tooth profile in the harmonic drive.This article from the design of harmonic drive,make sure the flexspline,Wave generator and Circular spline. And analysis the stress and strain of the flexspline,and the force on the teeth. Analysis the superiority of double-arc,introduce the bouble-arc to harmonic driving.Reference the national standards,make sure the flexspline tooth profile.By the geometric method and the number of coordinate transformation,drive out the corresponding gear tooth profile.After determine the structure of harmonic gear size and meshing parameters.Establish the overall three-dimensional model,finite element analysis.In element software, the harmonic drive wave generator device,soft wheel and justround the network division,the definition of material properties and boundary conditions aregiven, and define the analysis steps.The wave generator assembly simulation, obtained in the wave generator is loaded, flexible wheel cylinder of the stress and strainconditions.Then load just round.this time,the harmonic drive gear assembly is colpleted.then wave generator.soft wheel and just round the force is harmonic gear drives the initialwork to observe the soft wheel cylinder and tooth of the force.Good at asselbly,the loadilposed on the overall model,observed in a load and different load cases,the soft round of stress and strain conditions.Then change the flexible wheel structure parameters,one by oneanalysis,the results were compared.Come to the flexible wheel strucrure geometry the optimal solution.Derermine the speed ratio of the design of harmonic gear drive unit 50 of the structure and geometry.And through this analysis.the double-arc tooth profile in the appliartion of harmonicgear drive set thefoundation pad. |
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