Cycloid hypoid gear has a series of advantages such as high processing efficiency, less equipment required, stable transmission and low noise. It has been widely used in automobile industry, shipbuilding industry, machine tools, mining, metallurgy, electric power, cranes and other heavy machinery. However, the research on this kind of gear is far less abundant than that of arc involute gear. Therefore, starting from the machining simulation, based on the accurately established full tooth surface model, the meshing performance analysis method of this kind of gear is systematically studied; Based on the error sensitivity analysis and error pre correction research of the tooth surface, an active design method of the tooth surface which can pre control the meshing performance of the mating tooth surface is proposed; Then, the actual meshing simulation analysis method and active tooth design method based on tooth surface measurement are studied. Finally, the theoretical analysis method is verified by relevant tests and authoritative commercial software simulation.
- Considering the arc of the blade and the arc of the tip, the general full tooth surface model of cycloid hypoid gear is established; A new method to calculate the instantaneous contact ellipse in TCA is proposed; A time-varying meshing stiffness calculation method of cycloid hypoid gear pair based on LTCA is proposed; The geometric analysis method of the edge contact of cycloid hypoid gear is given, and the edge contact problem of cycloid gear is successfully solved.
- An active design method of cycloid hypoid gear tooth surface based on theoretical tooth surface is proposed, and the weight coefficient is introduced to selectively control the meshing performance of both sides of the tooth surface, which provides an effective way to actively control the meshing performance of both sides of cycloid hypoid gear machined by double-sided method in the design stage.
- The simulation analysis method of actual tooth surface meshing of cycloid hypoid gear based on discrete measurement coordinate fitting is established, which comprehensively reflects the meshing information of actual tooth surface, and avoids the problem of inconsistent inspection and evaluation criteria caused by the simulation analysis of theoretical tooth surface and the verification of actual tooth surface roll inspection test.
- An active design method of cycloid hypoid gear tooth surface based on the actual tooth surface is proposed, which comprehensively considers the tooth surface deviation caused by machining error and heat treatment deformation of the large and small gear tooth surfaces. The expected meshing performance can be obtained only by modifying the small gear tooth surface once, which is very beneficial to shorten the trial production cycle of cycloid gear that cannot be refined after heat treatment, It also provides a new way to actively control the meshing performance of the tooth surfaces on both sides in the trial production stage.