Transactions of Nanjing University of Aeronautics & Astronautics
GEOMETRIC MODELING OF GENERATINGMANUFACTURED SPIRAL BEVEL GEARS BASED ON CUTTING SIMULATION
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Abstract:
geometric modeling method for generatingmanufactured spiral bevel gears(SBGs ) is proposed. It consists of two steps: (1) creating a reference model by simula ting the process of cutting spiral bevel gear, (2) reconstructing the final soli d model by collecting data points from the reference model and fitting these poi nts into NURBS surfaces. In this method, cutting simulation avoids abstruse math ematical theories and complex methods, thus making it convenient to obtain data points o n the complex tooth surface before the gear is manufactured and efficient to inc rease the accuracy of the solid model. Also, the representations of tooth surfac es of the final model is unified as a NURBS surface function. The NURBS surface is continuous and smooth, thus it is available for wide applica tions i n CAD／CAE. The experiment proves that the method can be used to establish an a ccura te pair of SBG models, thus providing a feasible and effective way for CAD／CAE modeling.
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