Helical offset non orthogonal face gear

Face gear transmission is a transmission mechanism composed of cylindrical gear and bevel gear invented by fellow company. Nowadays, face gear transmission has been successfully applied to robot joint reducer, helicopter power shunt reducer, differential in automobile transmission system and rear axle drive reducer. Compared with bevel gear, face gear transmission mechanism has many advantages: light weight, small volume, no axial positioning requirements, high bearing capacity, convenient replacement and low noise.

Therefore, in recent years, many companies and researchers have invested a lot of energy in the research of face gear. Li zhengminqing and Zhu Rupeng studied the influence of tooth profile sharpening, undercutting and assembly error of orthogonal face gear on the transmission characteristics of face gear. Shen Yunbo and others studied the tooth width design and geometric transmission error design of helical gear. Fu Xuezhong studied the tolerance and sensitivity of machining, manufacturing and installation errors of offset surface gears. Zhao Ning and Jin Yongxian completed the gear shaping simulation processing and error analysis of non orthogonal face gears.

The application of face gear in the field of transmission is limited due to the difficulty of processing and manufacturing face gear. However, most of the existing researches focus on spur gear with orthogonal face, ignoring the research on more complex and general offset non orthogonal face gear. In order to further enrich the transmission form of face gear, make it meet the requirements of diversified structural layout in the transmission system with limited space, and expand the application advantages of face gear in the transmission field, the author designs the face gear with three parameters: helical gear, offset and non orthogonal, deduces the tooth surface equation of face gear with the tooth surface equation of helical gear shaper cutter, and numerically models the tooth surface of helical offset non orthogonal face gear with MATLAB, The visualization of tooth surface is realized, and the virtual simulation machining of face gear is carried out. Through the numerical method, the tooth surface of gear shaping simulation surface gear and theoretical surface gear are compared and analyzed, and the tooth surface deviation of its corresponding points is calculated, which lays a theoretical foundation for the subsequent research of helical offset non orthogonal gear.

Taking helical offset non orthogonal face gear as the research object, the tooth surface equation of helical offset non orthogonal face gear is deduced, and the relevant parameters of face gear are designed; Using VERICUT virtual simulation software, the gear shaping machining simulation of helical offset non orthogonal surface gear is completed; The numerical modeling of helical offset non orthogonal surface gear is completed by using MAT-LAB software, and the gear shaping simulation results are numerically analyzed to verify the correctness of the gear shaping simulation processing of helical offset non orthogonal surface gear. It lays a theoretical foundation for the subsequent research of helical offset non orthogonal gear.

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