1.Research findings
(1) By pre controlling the length coefficient of the contact area of the tooth surface, the length of the instantaneous contact area can be accurately controlled, so as to realize the pre control of the bearing capacity of the gear pair. Moreover, with the increase of the length of the instantaneous contact area, the transmission error gradually decreases. When ct=1 is close to the line contact, the constant transmission ratio meshing can be approximately achieved, but it is extremely sensitive to the error.
(2) By pre controlling the directional angle of the contact trace at the reference point, the control of the tooth surface contact trace can be realized, and the tooth surface contact quality and transmission performance can be changed.
(3) The comprehensive spirac gear cutting adjustment calculation method of presetting the length coefficient of the contact area and the directional angle of the contact trace can effectively eliminate the edge contact, reduce the transmission noise and transmission ratio error, improve the motion stability and transmission accuracy, and realize the forward and reverse transmission consistency of the gear pair.
(4) Using the general NC machine tool to process the three-dimensional model calculated by the motion relationship of each component of the special machine tool, the Cycloid Bevel Gear and hypoid gear pair that comply with the design requirements of the original drawing and maintain the meshing characteristics and transmission performance proposed by the spirac gear cutting principle can be obtained.
(5) The design method of non generating cut in machining of gear pinion and precision forging of gear wheel can effectively improve the manufacturing efficiency.
2.Innovation points
(1) This paper presents a design method of Cycloid Bevel Gear and hypoid gear pair, gear pinion non generating cutting in method processing and gear wheel precision forging forming, which improves the manufacturing efficiency and provides a theoretical basis for mass production;
(2) This paper studies the machining principle of Cycloid Bevel Gear and hypoid gear by the cutter inclination half generation method, and puts forward the tooth cutting adjustment calculation method of pre controlling the meshing characteristics of the tooth surface, so that the transmission performance of the forward and reverse surfaces of the gear is consistent;
(3) This paper studies the general NC machining technology of Cycloid Bevel Gear and hypoid gear pair, and provides a general NC machine tool machining method for single piece and small batch production of Cycloid Bevel Gear and hypoid gear pair, which complies with the original drawing design parameters and obtains the performance parameters based on the spirac gear cutting principle.