Research On Dual Duplex Spread Blade Method Of Small Module Spiral Bevel Gear

Small module spiral bevel gear has been widely used in intelligent transmission mechanism for the compact size.Generally,the traditional small module spiral bevel gears are machined by the dual duplex spread blade method.milling the pinion and wheel in duplex is efficient but uncontrollable in meshing quality,which is primarily to limit the improvement in transmit performance.In view of the poor meshing quality of small module spiral bevel gears machined by the dual duplex spread blade method,this paper uses TCA technology to modify and optimize the parameters in the processing,in order to improve the contact conditions of gear surfaces and the meshing quality of gear pair.Therefore,the processing efficiency and meshing quality of the gear can be guaranteed at the same time.1.The geometric design of the small module spiral bevel gear and the processing parameters of the dual duplex spread blade method are studied.According to the principle of dual duplex spread blade method and the process of the pinion and wheels,a pair of small module spiral bevel gears are used to calculate the geometric parameters and processing parameters.Furthermore,the cutter and adjusting parameters during cutting are given in this paper.2.According to the geometric parameters of the spiral bevel gear and processing parameters for dual duplex spread blade method,the meshing coordinate system of the gear pair and the tooth surface equation of the pinion and wheels are established.TCA programs are compiled according to the theory of analyzing tooth contact.The meshing process of the gear is analyzed by TCA,which lays a firm foundation for the gear cutting subsequently.3.The effects of the gear pair processing parameters on the meshing performance are studied by adjusting these parameters in TCA.changes on the contact area are summarized by regulating parameters in a limited scale.Based on the above principles,a good contact zone and transmission error curve are obtained by regulating the main parameters.by applying these modified parameters during the processing,a good theoretical meshing performance can be realized in the gear pair finally.4.accurate Digital modeling and meshing simulation analysis were constructed in UG and establishing the three-dimension model.simulations of assembly and gear tooth meshing situation were also affirmed in UG.5.The processing parameters of small module spiral bevel gears are verified by experiments.Rolling inspection experiment was carried out on the products to verify whether the above process is applied to the machining of bevel gear pair.