Abstract
In gear transmission, temperature rise has a non-negligible impact on the accuracy, noise and transmission efficiency. However, there is no relevant research on the temperature rise of the anti-backlash single-roller enveloping hourglass worm (ASEHW) gear. To solve this problem, based on tribology principle and Hertz contact theory, the thermal power calculation method of the ASEHW gear was proposed for the first time and thermal analysis was carried out by Ansys software. The bulk temperature of the ASEHW gear under four different rotating speed (300 r/min, 600 r/min, 900 r/min, 1200 r/min) is calculated. The main factors causing temperature rise of the ASEHW gear are analyzed theoretically. Meanwhile, an experimental study is performed to verify the simulation results and validate the theory methods. The theory presented in this paper provides a solution for the thermal power calculation of ASEHW gear. This research provides a theoretical basis for further optimization of ASEHW gear.
Highlights
During the transmission of the gear, due to the relative sliding of the meshing tooth surface, an instantaneous high temperature is generated
We divide the thermal power of the anti-backlash single-roller enveloping hourglass worm (ASEHW) gear into two parts, the first part is the power loss caused by rolling friction between roller and worm surface, the second part is the power loss caused by rolling friction between the inner roller and the inner and outer ring
(1) In the ASEHW gear, thermal power loss can be divided into two parts: the rolling friction loss of the outer ring of the roller He and the rotation energy loss of the roller Hi
Summary
During the transmission of the gear, due to the relative sliding of the meshing tooth surface, an instantaneous high temperature is generated. After verifying the accuracy of the results, the simulation analysis method can be used to provide theoretical guidance for future research Using this method, Li et al [17, 18] calculated the temperature field of the gear, and carried out experimental comparison to verify the effectiveness of the simulation analysis. Compared with the traditional gear, the anti-backlash single-roller enveloping hourglass worm (ASEHW) gear converts the sliding friction into rolling friction due to the special structure of the roller on the worm wheel The structure of this paper is as follows: in the first part, the calculation method of thermal power and convection heat transfer coefficient of the ASEHW gear is constructed, the second part is the temperature rise simulation of the ASEHW gear, the third part is the temperature rise experiment and the comparison with the simulation results. The structure of this paper is as follows: in the first part, the calculation method of thermal power and convection heat transfer coefficient of the ASEHW gear is constructed, the second part is the temperature rise simulation of the ASEHW gear, the third part is the temperature rise experiment and the comparison with the simulation results. the last part is conclusion
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