摘要
随着电动汽车对电驱动系统噪声、振动与声振粗糙度(Noise·Vibration·Harshness,NVH)性能的要求越来越高,对电驱动传动系统齿轮设计提出了更高的要求。基于数值仿真的方法对电驱动传动系统平行轴式减速器大齿轮轮辐结构进行了优化设计。从齿轮模态、齿根应力、传动误差和制造误差敏感性4个方面分析对比了简单板式、圆减重孔板式、长减重孔板式、加强筋板式和交错板式5种大齿轮轮辐结构设计。结果表明,交错板式轮辐结构在齿轮模态、齿根应力、传动误差和制造误差敏感性4个方面都具有优势,尤其在齿轮模态频率方面,相比其他4种方案有显著提升。采用所提方法优化设计的交错板式轮辐结构,在同等质量条件下相比常见的圆减重孔板式结构,齿轮1阶模态频率提高72%,传动误差降低18%,可有效避免大齿轮共振引起的高速齿轮啸叫问题。
With the increasing demand of noise-vibration-harshness(NVH)performance of the electric vehicle drive system,higher requirements are put forward for gear design in the electric drive system.Based on numerical simulation,in this study,the gear web design of the wheel of an offset gearbox for the electric drive system is optimized.From mode of vibration,tooth root stress,transmission error to manufacturing error sensitivity,five kinds of gear web designs are analyzed,including simple plate,simple plate with weight reduction bore,simple plate with curved oval bore,simple plate with ribs and complex plate.The results show that with the complex plate design,the mode of vibration,tooth root stress,transmission error and manufacturing error sensitivity of the wheel can all be improved,especially for the natural frequency,which is significantly improved compared with the other four designs.The staggered plate spoke structure optimized using the method described in this study,under the same quality conditions,compared to the common circular weight reduction hole plate structure,increases the first modal frequency of the gear by 72%and reduces the transmission error by 18%.This can effectively avoid the high-speed gear whistling problem caused by large gear resonance.
作者
王鹏
余磊
黄超
Wang Peng;Yu Lei;Huang Chao(Schaeffler Trading(Shanghai)Co.,Ltd.,Shanghai 201805,China;School of Automotive Studies,Tongji University,Shanghai 201804,China)
出处
《机械传动》
北大核心
2024年第6期69-75,共7页
Journal of Mechanical Transmission
关键词
齿轮轮辐
数值仿真
模态
齿根应力
传动误差
制造误差敏感性
Gear web
Numerical simulation
Mode of vibration
Tooth root stress
Transmission er-ror
Manufacturing error sensitivity
