机器人用薄壁角接触球轴承动态特性分析

发布时间：2018-07-11 10:37

本文选题：薄壁轴承 + LS-DYNA　；参考：《机械设计与制造》2017年09期

【摘要】：机器人用薄壁角接触球轴承壁薄,易于发生较大形变。采用LS-DYNA软件建立了该轴承模型,进行轴承动态特性研究。研究发现,该轴承运转过程中,钢球组稳定运转但时而伴随有较大的速度波动和应力冲击;径向载荷承载区域及最大应力的变化总体都呈现先增加后减小,最终趋于稳定;钢球和内外滚道处的最大应力值及出现的位置一直处于动态变化,并非一直位于径向载荷指向的最下部,整体应力分布沿径载方向最下部处向两边呈波动递减的趋势。对轴承在不同转速、轴向载荷、径向载荷下的振动情况分析,应控制轴承的轴向载荷不超过2500N,径向载荷不超过轴向载荷的两倍,转速不应超过16r/s。
[Abstract]:The thin-wall angular contact ball bearing is easy to be deformed. The bearing model was established by LS-DYNA software, and the dynamic characteristics of bearing were studied. It is found that during the operation of the bearing, the steel ball group runs stably but sometimes accompanied by large velocity fluctuations and stress shocks, and the variation of the radial load bearing region and the maximum stress generally increases first, then decreases, and finally tends to be stable. The maximum stress value and position of steel ball and inner and outer raceway are always in dynamic change, but not always in the lowest part of radial load direction, and the whole stress distribution is fluctuating and decreasing along the bottom side of radial load direction. For the vibration analysis of bearing under different rotational speed, axial load and radial load, the axial load of bearing should be controlled not more than 2500N, the radial load should not exceed twice the axial load, and the rotational speed should not exceed 16rs.
【作者单位】：河南科技大学机电工程学院;洛阳轴研科技股份有限公司精密轴承制造部;
【基金】：国家863计划(2015AA043004) 河南省科技创新杰出人才计划(154200510013) 河南省高校科技创新团队支持计划项目(13IRTSTHN025) 洛阳市科技发展计划(1401018A)
【分类号】：TH133.3;TP242

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