剥皮机挤压揉搓机构中曲沟球轴承的试制及其承载能力

为了满足剥皮机的挤压揉搓作业效果,简化机械结构,设计了一种曲沟球轴承。建立曲沟球轴承受力分析模型,分析了不同加载力下滚动体与外圈滚道的峰顶到谷底之间5个接触点的接触应力,得到滚动体与外圈之间的接触应力从峰顶到谷底逐渐减小、随着加载力的增大而增加的趋势;在此基础上,试制了外圈为三维正弦曲线环形圆弧滚道,内圈为定点窝眼滚珠结构的曲沟球轴承,用自制的试验台对试制的曲沟球轴承进行了测试。结果表明：加载力增大,轴承外圈的温升幅度增高,温升速度加快,经过10 min后,温升曲线趋于平缓,基本达到了热平衡状态。研究成果为曲沟球轴承的结构优化、定型生产及后续的推广应用提供了参考。...

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Bibliographic Details
Published in农业工程学报 Vol. 33; no. 13; pp. 74 - 81
Main Author 史诺 郭康权 王明杰 范宇杰 刘宝选
Format Journal Article
LanguageChinese
Published 西北农林科技大学机械与电子工程学院,杨凌,712100%西北农林科技大学机械与电子工程学院,杨凌 712100 2017
陕西省农业装备工程技术研究中心,杨凌 712100
Subjects
挤压揉搓
接触应力
机械化
正弦曲线
温升曲线
设计
轴承
bearings
sinusoid
挤压揉搓
contact stress
机械化
设计
正弦曲线
温升曲线
接触应力
pressing and rubbing
temperature rise curve
design
轴承
mechanization
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2017.13.010

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Summary:为了满足剥皮机的挤压揉搓作业效果,简化机械结构,设计了一种曲沟球轴承。建立曲沟球轴承受力分析模型,分析了不同加载力下滚动体与外圈滚道的峰顶到谷底之间5个接触点的接触应力,得到滚动体与外圈之间的接触应力从峰顶到谷底逐渐减小、随着加载力的增大而增加的趋势;在此基础上,试制了外圈为三维正弦曲线环形圆弧滚道,内圈为定点窝眼滚珠结构的曲沟球轴承,用自制的试验台对试制的曲沟球轴承进行了测试。结果表明：加载力增大,轴承外圈的温升幅度增高,温升速度加快,经过10 min后,温升曲线趋于平缓,基本达到了热平衡状态。研究成果为曲沟球轴承的结构优化、定型生产及后续的推广应用提供了参考。
Bibliography:Shi Nuo1, Guo Kangquan1,2, Wang Mingjie1, Fan Yujie2, Liu Baoxuan1 （1. College of Mechanical and Electronic Engineering, Northwest A ＆F University, Yangling 712100, China; 2. Shaanxi Engineering Research Centre for Agriculture Equipment, Yangling 712100, China）
11-2047/S
In order to satisfy the pressing and rubbing operation effects of barking machines and simplify its mechanical structure, a curved groove ball bearing was designed. The outer ring of curved groove ball bearing was a three-dimensional sine curve circular arc raceway with a period of 7 and an amplitude of 1 mm. The inner ring of curved groove ball bearing was designed as a fixed ball hole structure. The curved groove ball bearings were installed in pairs, the center axis of the two bearings needed to be lined up properly, and its installation should be ensured the ＂Peak＂ to the ＂Valley＂. The rotation of the inner ring was driven by spindle rotation in operation, the rolling element moved into the inner ring ball socket, at the same time, moved al
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2017.13.010