Papers by Keyword: Spherical Gear

Abstract: The ring-involute tooth spherical gear with two degrees of freedom is considered as the research object. Through the combination of theory and experiment, a further study is conducted on it. According to the theory of rapid prototyping, comprehensive consideration of the ring-involute teeth spherical gear tooth profile surface forming principle and transmission features, traditional machining method, transmission error and the actual application, a fast processing method of the ring-involute tooth spherical gear is proposed. Spherical gear model is built in Solidworks surface modeling environment. Through the use of rapid prototyping equipment, the ring-involute tooth spherical gear is worked out. Tooth root thick, addendum thickness and transmission error of spherical gear is further measured on this basis with the method of rapid forming. Basic parameters meet the requirements. The rapid prototyping processing method is proved to be practical, effective and valuable.

Abstract: A new type of spherical gear drive, which takes micro-segment involute profile as tooth profile, is presented in this paper. The generation principle of the spherical gear is described. The mathematical models including the equation of micro-segment involute profile, the equation of the conjugate tooth profile and the engagement equation, are established based on the meshing theory. This new type of spherical gear drive has the potential to improve the load capacity and the performance of spherical gear transmission.

Abstract: The contact characteristics of spherical gear and ring-rack are researched in this paper. First, the tooth profile surface equation of spherical gear is established on the basis of the transmission theory of spherical gears. After that, the profile surface equation of ring-rack is established. Then, kinematics of the transmission of spherical gear and ring-rack is researched, the appreciate coordinates are established, and the profile surfaces of spherical gear and ring-rack are described in the same coordinate. Then, the contact analysis is conducted between spherical gear and ring-rack, and the contact point and ellipse parameters are acquired, as well as the rules of their evolvements. The conclusions above are benefit to further research on the transmission of spherical gear and ring-rack.

Abstract: This paper deals with the analysis and studies in the tooth profile of robot flexible joint spherical gear. A new type of two-degree of freedom conical concave spherical gear is proposed, calculated by analysis of teeth with tapered concave conjugate of the convex teeth shape. The undercut, overlap coefficient are analyzed and calculated to ensure the rational structure of the spherical gear. The conical concave tooth is using in the spherical gear, which makes the process of manufacturing easier and can improve the manufacturing precision and reduce the costs.