新齿廓人字齿同步带部分啮合区干涉与形貌

Incomplete Meshing Interference and Morphology of New Tooth Profile of Double Helical Synchronous Belt

人字齿与直齿同步带相比具有传动精度高、噪声低、运行平稳等特点。同步带传动部分啮合干涉是引起带齿面磨损的主要因素。为了研究部分啮合对人字齿同步带齿面干涉影响,在准静态条件下,利用坐标变换理论建立了部分啮合传动模型。通过对人字齿同步带部分啮合机理研究,建立了同步带部分啮合干涉形态模型,研究了节距差和螺旋角对同步带齿面干涉过程和瞬时干涉形貌的影响。人字齿与直齿磨损实验与计算结果表明,人字齿同步带耐磨损性能更好。

Comparing with straight tooth synchronous belt,the double helical synchronous belt has the characteristics of high transmission accuracy,low noise,smooth running. The wear of tooth surface is mainly caused by partial meshing interference in the process of synchronous belt transmission. In order to study the effect of partial meshing on the double helical synchronous belt tooth surface interference,by using the coordinate transformation theory,the partial meshing transmission model is established under the quasi- static condition. The model of partial meshing interference morphology is established through the research of the double helical synchronous belt partial meshing mechanism. In addition,the influence of pitch difference and spiral angle on the process of double helical synchronous belt tooth surface interference and the morphology of instantaneous interference are studied. The double helical tooth and straight tooth wear experiment and calculation results show that the double helical synchronous belt has better resistant wear and performance.