Precise modeling method for biarc correction cycloidal gear

The invention relates to a precise modeling method for a biarc correction cycloidal gear and belongs to the technical field of gear modeling. The method concretely includes the steps that basic parameters are determined, the reference circle, the addendum circle and the dedendum circle of the gear are drawn, a biarc correction cycloid is calculated according to the basic parameters in the biarc correction cycloid and interior and exterior tooth profile equations, a single tooth profile and a single tooth blank are established, the single tooth profile and the tooth blank are imported into professional software so that the solid body can be stretched and Boolean operation can be carried out, modeling of the single tooth is completed, and then modeling of the whole gear is completed by applying array. The precise modeling method for the biarc correction cycloidal gear is an important modeling method for actual machining and simulation operation of the biarc correction cycloidal gear and has the advantages of being high in modeling precision and efficiency, and simple and convenient in calculation, design and manufacturing process and ensuring the design precision and the manufacturing precision of the biarc correction cycloidal gear.