轮齿修形可减小齿轮静态传动误差,改善齿轮动态特性。基于现有文献,考虑基圆与齿根圆不重合,在齿廓精确建模的基础上确定齿轮的时变啮合刚度和静态传动误差。针对不同修形曲线在不同修形量下齿轮静态传动误差的变化进行分析,给出了不同修形量范围内的最佳修形曲线,并结合齿轮-转子系统动力学模型,考虑齿廓修形引起的无载荷静态传动误差,分析不同修形曲线下系统的振动特性,进一步确定不同转速下最佳修形曲线。研究结果表明通过评估齿轮-转子系统的振动特性,可更好地确定不同转速下的轮齿的最佳修形曲线。
Abstract
Tooth profile modification can decrease the loaded static transmission error, and improve the dynamic characteristic of gear pairs. On the basis of available theories and literatures, the time-varying mesh stiffness (TVMS) and static transmission error (STE) were obtained by a correction method considering misalign effect between the root circle and tooth base circle and accurate gear profile curve. The optimum profile modification curve under different amounts of profile modification were determined by analyzing the STE changing with different profile modification curves and amounts of profile modification. By combining the gear-rotor system model and considering the effect of no-load STE caused by profile modification, the vibration responses of the gear-rotor system with different profile modification curve were analyzed and the optimum profile modification curves were assessed by amplitude frequency responses. The results show that the optimum profile modification can be determined by evaluating the vibration responses of gear-rotor system.
关键词
齿廓修形 /
时变啮合刚度 /
静态传动误差 /
齿轮-转子系统 /
振动响应
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Key words
profile modification /
time-varying mesh stiffness /
static transmission error /
gear-rotor system /
vibration response
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参考文献
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脚注
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