Abstract
In order to achieve the NC machining to the equal base circle bevel gear with a standard cutter, to plan the machining path efficiently and to predict machining interference, based on the equal base circle bevel gear theory, the machining coordinate system for the bevel gear was established, according to gear tooth surface equations of the bevel gears, the tooth surface discretization function was derived, and through the calculation and get the discrete points, the gear surface was modeled in the software UG, and then the planning of the machining path, automatic programming and simulation processing were done. At last, simulation processing, analysis and comparison to the gear surface were carried on with the software VERICUT, improved that the gear surface modeling and NC machining methods were correct and feasible.
Highlights
According to the traditional theory of the equal base circle bevel gear, using the fingershaped milling cutter to machine the bevel gear, through controlling the finger-shaped milling cutter and wheel billet to achieve specific relative motion, to make sure that the base circle radius of the bevel gear at different cone distances is same, the tooth profile will not change suddenly, in which way to machine the entire tooth surface accurately with only one milling cutter
In order to plan the machining path during the NC programming to the bevel gear and automatically programming in UG software, the digital processing based on the equal base circle bevel gear theory is necessary, and accurate modeling in UG software, this is the key points to the NC machining to the equal base circle bevel gear with UG software[3,4]
For this reason, based on the equal base circle bevel gear theory, through the establishment of the machining coordinate system, gear surface analysis and discretization, the gear surface modeling was finished in UG software, and further simulation processing to the gear surface was done, in order to verify the correctness of the tooth surface modeling, the CNC machining code generated by UG software was imported into VERICUT software, and simulation processing was done, and the simulation process and the theoretical tooth surface flanks virtual contrast detection was carried on to verified the correctness and feasibility to the tooth surface modeling and NC machining method[5]
Summary
According to the traditional theory of the equal base circle bevel gear, using the fingershaped milling cutter to machine the bevel gear, through controlling the finger-shaped milling cutter and wheel billet to achieve specific relative motion, to make sure that the base circle radius of the bevel gear at different cone distances is same, the tooth profile will not change suddenly, in which way to machine the entire tooth surface accurately with only one milling cutter. In order to plan the machining path during the NC programming to the bevel gear and automatically programming in UG software, the digital processing based on the equal base circle bevel gear theory is necessary, and accurate modeling in UG software, this is the key points to the NC machining to the equal base circle bevel gear with UG software[3,4]. For this reason, based on the equal base circle bevel gear theory, through the establishment of the machining coordinate system, gear surface analysis and discretization, the gear surface modeling was finished in UG software, and further simulation processing to the gear surface was done, in order to verify the correctness of the tooth surface modeling, the CNC machining code generated by UG software was imported into VERICUT software, and simulation processing was done, and the simulation process and the theoretical tooth surface flanks virtual contrast detection was carried on to verified the correctness and feasibility to the tooth surface modeling and NC machining method[5]
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