曲柄压力机滑动轴瓦受力的数值模拟及测试实验

发布时间：2018-05-29 00:40

本文选题：滑动轴瓦 + 曲柄压力机　；参考：《锻压技术》2017年02期

【摘要】：以1600 k N伺服机械压力机的滑动轴瓦为研究对象,对轴瓦工作时的受力状态进行数值模拟分析,并采用压力测量胶片在10 k N微型压力机上进行了轴瓦受力的实验验证。结果表明,工作时轴瓦所承受的应力主要发生在其正下方区域,应力的大小从中间向两端逐渐减少,应力分布不均匀。轴瓦与轴之间接触压力和摩擦切应力的分布规律与等效应力的相似。轴瓦厚度增加能降低轴瓦所承受的应力,有效提高轴瓦的承载能力。轴瓦与轴之间较大的配合间隙将导致轴瓦承载区域减小,轴瓦所受的应力增大。轴瓦与轴承座之间的过盈配合能使轴瓦的承载面积明显增大,最大等效应力降低,应力分布更均匀。
[Abstract]:Taking the sliding bearing of the 1600 KN servo mechanical press as the research object, the force state of the bearing is numerically simulated and analyzed, and the bearing force of the bearing is verified by using the pressure measuring film on the 10kN micro press. The results show that the stress of the bearing occurs mainly in the lower part of the bearing, and the stress decreases gradually from the middle to the two ends, and the stress distribution is not uniform. The distribution of contact pressure and frictional shear stress between bearing and shaft is similar to that of equivalent stress. Increasing the bearing thickness can reduce the bearing stress and improve the bearing capacity. The larger matching gap between the bearing and the shaft will reduce the bearing area of the bearing and increase the stress of the bearing. The interference fit between the bearing bush and the bearing seat can obviously increase the bearing area of the bearing bush, reduce the maximum equivalent stress, and make the stress distribution more uniform.
【作者单位】：广州铁路职业技术学院机械与电子学院;广东工业大学材料与能源学院;
【基金】：国家自然科学基金资助项目(51175088) 佛山市科技创新专项资金项目(2013GQ100413)
【分类号】：TG305

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