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- 2016
轴系的热膨胀对于锥齿轮错位量的影响
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Abstract:
错位量对锥齿轮传动性能影响显著, 而轴系的热膨胀会影响传动系统刚度, 进而影响错位量。该文针对现有锥齿轮校核和分析时没有考虑轴系的热膨胀对错位量的影响这一问题, 详细推导了热膨胀与轴承刚度、轴系变形之间的关系, 建立了一种考虑热膨胀的锥齿轮传动系统非线性有限元模型, 并用于计算锥齿轮错位量。算例结果表明, 热膨胀会使锥齿轮错位量减小。进一步研究了不同工作温度下错位量的变化情况, 结果表明, 系统工作温度越高, 热膨胀的影响越明显。该研究为锥齿轮校核和分析中如何考虑和利用热膨胀提供了依据, 对其他传动系统的分析也具有一定借鉴意义。
Abstract：Misalignment can significantly impact the force transmission in bevel gears. The thermal expansion of the shaft can impact the stiffness of the transmission system which further influences the misalignment. The effect of the thermal expansion of the shaft on the misalignment is given by a relationship between the thermal expansion and the bearing stiffness and shaft system deformation. A non-linear finite element model is built to model a bevel gear transmission system with the thermal expansion to calculate the bevel gear misalignment. The results show that the thermal expansion reduces the bevel gear misalignment with higher working temperatures giving greater thermal expansion effects. The results describe how to use the expansion effect for bevel gear rating and design.
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