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圆柱凸轮侧向传动机构最小油膜厚度计算公式
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中央高校基本科研业务费专项资金项目(182418001)


Calculation of Minimum Lubricant Film Thickness for Cylindrical Cam Lateral Transmission Mechanism
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    摘要:

    圆柱凸轮侧向传动机构是一种新型的减速机构,与弧面凸轮传动机构相比承载力更大。为研究圆柱凸轮侧向传动机构啮合过程中的润滑状态,依据Hamrock-Dowson公式,推导出稳态工况下圆柱凸轮侧向传动机构线接触最小油膜厚度计算公式。该公式表明对润滑油膜厚度影响较大的因素主要有润滑油黏压系数、常压下润滑油动力黏度、转速、圆柱半径、滚子半径及从动盘节圆半径,因此可通过优化结机构构及调整机构工况来改善机构润滑状态。采用该最小油膜厚度计算公式计算某圆柱凸轮侧向传动机构在稳态工况下最小油膜厚度及膜厚比,分析该机构工作时的润滑状态,并提出其润滑状态的优化方案。

    Abstract:

    The cylindrical cam lateral transmission mechanism is a new type of deceleration mechanism,which has greater bearing capacity than the globoidal cam drive mechanism.In order to study the lubrication state of cylindrical cam lateral transmission mechanism in meshing process,according to the HamrockDowson formula,the minimum oil film thickness calculation formula of cylindrical cam lateral transmission mechanism under steady conditions was derived.The formula reflects the main factors affecting the oil film thickness,including the viscositypressure coefficient and dynamic viscosity of lubricating oil under normal pressure and the rotational speed,the radius of cylinder and roller and the circle radius of the driven disc,and the lubrication state of the mechanism can be improved by optimizing the structure and working conditions of the mechanism.The minimum oil film thickness and the film thickness ratio of a cylindrical cam lateral transmission mechanism were calculated with the derived formula,the lubrication state of the mechanism under working condition was analyzed,and the optimization scheme of lubrication state was put forward.

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田侃.圆柱凸轮侧向传动机构最小油膜厚度计算公式[J].润滑与密封,2018,43(8):121-125.
. Calculation of Minimum Lubricant Film Thickness for Cylindrical Cam Lateral Transmission Mechanism[J]. Lubrication Engineering,2018,43(8):121-125.

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  • 在线发布日期: 2018-09-03
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