Research On Digitized Method Of Conjugate Surfaces And Conjugate Crown Gear Coupling Transmission

Along with the development of digitized design and machining, the conjugate theory of analytic surface is not able to satisfy the needs of modern design and manufacturing technology. Therefore, it is urgent to study the digitized method of conjugate surface based on discrete theory, and construct its theoretical system in order to establish the theoretical foundation for the conjugate generating machining of digitized surface. This dissertation proposes the digital conjugate surface principle and computing theory in order to solve all kinds of problems of conjugate surface theory by use of the conjugate condition via the digital computer, which break through and develop the traditional analytic conjugate theory, and discard the redundancy deduction and transform of the traditional theory. It not only be used to solve the problems of digitized original surfaces, but also solve the problems of analytic original surfaces, and really realizes the digitized analysis of the conjugate surface. This method makes the coordinate measure of the given surface, the resolution and the numerical control machining of the conjugate surface be the tight entirety.This dissertation adopts Visual C++ to complete the original data disposal and interactive interface, and adopts MATLAB to complete the computing of the conjugate surface, that is to say, adopts the foreground VC and background MATLAB to first develops the software Conjugater1.0 solving the digitized conjugate surfaceΣ 2 corresponding to the arbitrary original surfacesΣ 1. This system has the stronger adaptability to realize the various conjugate computing, therefore improves the automatic extent of the conjugate surface's design, and widens its compliant range.The crown gear coupling is a movable rigid coupling with excellent performance, and also is an the important assembly unit of mechanical transmission, which can compensate the radial, axial, angle and compositive displacement, and has the extensive applicable foreground in the mechanical equipments of metallurgy, mining, chemical engineering, hoisting, transportation and so on. But the crown gear coupling lacks the systemic theory and reliable design reference, therefore it has the important theoretical significance and practical value to wholly and deeply study its driving medium in the theoretical and experimental aspects.Based on the conjugate surface theory and meshing principle, this dissertation establishes the transmission theory and analysis strategy of the crown gear coupling. It entirely studies the mechanics performance of the crown gear coupling, such as the meshing state of many pairs of teeth, statics, dynamics, contact strength, bending strength, and so on; carries through the meshing experiment of many pairs of teeth and the pre-alarm experiment of tooth-face crack damage with the crown gear coupling by use of the special experiment rig of the crown gear coupling designed selves. After the theoretical and experimental research, some valuable conclusions on the transmission device are first gained, which give birth to the significant influence and effect on the future design ideas of the transmission component.