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太原理工大学 齿轮研究所,太原 030024
王玮,男,1998年生,山西晋中人,硕士研究生;主要研究方向为齿轮传动;1150877106@qq.com。
收稿:2025-01-17,
修回:2025-03-21,
纸质出版:2026-01-15
移动端阅览
王玮,张瑞亮,徐怀哲,等. 谐波减速器三项余弦凸轮波发生器的设计与分析[J]. 机械传动,2026,50(1):119-125.
WANG Wei,ZHANG Ruiliang,XU Huaizhe,et al. Design and analysis of three-term cosine cam wave generators for harmonic reducers[J]. Journal of Mechanical Transmission,2026,50(1):119-125.
王玮,张瑞亮,徐怀哲,等. 谐波减速器三项余弦凸轮波发生器的设计与分析[J]. 机械传动,2026,50(1):119-125. DOI: 10.16578/j.issn.1004.2539.2026.01.015.
WANG Wei,ZHANG Ruiliang,XU Huaizhe,et al. Design and analysis of three-term cosine cam wave generators for harmonic reducers[J]. Journal of Mechanical Transmission,2026,50(1):119-125. DOI: 10.16578/j.issn.1004.2539.2026.01.015.
目的
2
波发生器作为原动件,其轮廓曲线直接关系着柔轮的变形受力规律。为降低柔轮受力,改善其疲劳性能,提出一种三项余弦凸轮波发生器的设计。
方法
2
三项余弦波发生器轮廓曲线由基圆半径(常数项)及3个余弦项叠加而成,通过波发生器长轴处曲率、波高及短轴缩进量对曲线参数进行约束控制;在轴承选型后,将长轴处曲率变化系数、短轴修正系数、柔性轴承游隙作为变量参数,分析其对柔轮变形和应力的影响,并对具体型号谐波减速器提出最优设计方案;对新型凸轮结构装入后的柔轮结构进行有限元分析,分别在撑胀、空载以及加载条件下与传统余弦凸轮进行对比,对柔轮受力情况及谐波传动的整体性能进行分析,对该设计方案的合理性进行了验证。
结果
2
有限元分析结果表明,与传统余弦波发生器相比,三项余弦波发生器作用下的柔轮应力在不同工况下都降低10%以上,有着更小的应力幅值及更平稳的应力变化趋势,具有更长的疲劳寿命及更好的精度保持性能。
Objective
2
The wave generator
as the driving component
has its profile curve directly affecting the deformation and stress distribution of the flexible wheel. To reduce the stress on the flexible wheel and improve its fatigue performance
a design method for a three-term cosine cam wave generator was proposed.
Methods
2
The profile curve of the three-term cosine wave generator was composed of a constant term
represented by the base circle radius
and three cosine terms superimposed. By using the curvature variation coefficient at the major axis
the correction factor at the minor axis
and the clearance of the flexible bearing as variable parameters
the influence of these parameters on the performance of the wave generator was analyzed
and the optimization of a specific harmonic reducer model was validated. Finite element analysis was performed on the flexible wheel structure after incorporating the new cam structure under expansion
no-load
and loading conditions
and comparisons were made with the pre-optimized structure to analyze the stress distribution on the flexible wheel.
Results
2
The finite element results indicate that
compared to the traditional cosine wave generator
the flexible wheel under the three-term cosine wave generator exhibits superior stress performance under various working conditions and achieves longer fatigue life.
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