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首页> 外文会议>International Symposium on Digital Manufacture; 20061015-17; Wuhan(CN) >Research on Mechanical Model and Properties of New-type Negative Offset Structure in Spatial Seven-bar Heavy Shear
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Research on Mechanical Model and Properties of New-type Negative Offset Structure in Spatial Seven-bar Heavy Shear

机译：空间七杆重剪中新型负偏距结构的力学模型和性能研究

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摘要

According to revised Cailikefu's rolling shear force formula , motion path equation of spatial seven-bar path is built, and mechanical model, with such new structural features as negative offset, is thus successfully established for 2 800 mm heavy shear of some Iron & Steel Company. Shear force and bar force of steel plate, before and after adoption of negative offset structure, are analyzed, as well as horizontal force component of mechanism that influences pure rolling shear and back-wall push force that keeps blade clearance. The discovery is that back-wall push force could be kept large enough at rolling start-up (i.e. the time that the maximum rolling shear produces ), meanwhile, back-wall push force is the most approximate to side forces with adoption of 60 mm-100 mm offset. Theoretical results and on-site shear quality both indicate that new structural features such as negative offset plays an important role in ensuring pure rolling shear and keeping blade clearance constant, which provide an effective means to improve quality of steel plate.
机译：根据修正的Cailikefu的滚动剪切力公式，建立了空间七杆路径的运动路径方程，从而成功建立了某钢铁公司2 800 mm重剪切的具有负偏移等新结构特征的力学模型。 。分析了采用负偏移结构前后的钢板剪切力和钢筋，以及影响纯轧制剪切力的机构的水平力分量和保持叶片间隙的后壁推力。发现可以在轧制启动时（即产生最大轧制剪切力的时间）将后壁推力保持足够大，同时，采用60 mm时，后壁推力最接近于侧向力偏移量-100毫米。理论结果和现场剪切质量均表明，负偏移等新结构特征在确保纯轧制剪切和保持叶片间隙恒定方面发挥着重要作用，这为提高钢板质量提供了有效手段。

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