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| Effect of machining errors on gear engagement using contact finite element method |
| ZHANG Tao1, WU Yong-jun2 ,WU Jing3, WANG Jian-jun1 |
| School of Jet propulsion, Beihang University, Beijing 100191 |
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Abstract Machining errors have significant effect on the gear engagement, it is necessary to learn the mechanism of action for the reduction of vibration. Based on the analysis of several kinds of machining errors, the precise modeling method was first presented，on this basis the engagement process of one spur gear pairs was simulated using contact finite element method as an example. The angular velocity and dynamic meshing force showed significant differences between the ideal gear pairs and the gear pairs with machining errors. Then the influence mechanism of profile error and pitch error on the gear vibration was researched respectively, Quantitative analysis of meshing characteristics including dynamic transmission error and angular acceleration was done using the FFT. The results show that the proposed modeling method can simulate arbitrary form of machining errors even if in small order and reflected in the contact finite element analysis. It is not only effective to investigate how the machining errors influence the meshing process, but also to study the influence mechanism of single machining error, furthermore the conclusions can be used to guide the anti-vibration design and accuracy design.
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Received: 21 October 2013
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2015, Vol. 34 
