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公开(公告)号:US20160186817A1
公开(公告)日:2016-06-30
申请号:US14911272
申请日:2013-09-11
申请人: AKTIEBOLAGET SKF
发明人: Yuri KADIN , Bo HAN
摘要: A friction coupling comprising first and second coupling surfaces. A friction surface is provided on the first coupling surface and a counterface is provided on the second coupling surface. The friction coupling further comprises preload elements, such as bolts, for applying a predefined pressure on the first and second coupling surfaces. The friction surface of the coupling comprises abrasive particles that constitute hard asperities which protrude from a substrate of the friction surface with a height h. The abrasive particles are provided on the substrate in a predefined asperity density η. The predefined asperity density η is greater than a minimum threshold for the asperity density ηmin and is less than 2.5*ηmin. The minimum threshold is defined by the following relationship: η min = π 4 P H μ abr 2 h _ 2 + σ 2 where η asperities per unit (surface area) (m−2); P pressure (Pa); μabr coefficient of friction; H hardness (counterface) (Pa) h height (asperities) (m); σ standard deviation (asperity heights) (m).
摘要翻译: 一种包括第一和第二联接表面的摩擦联接器。 在所述第一联接表面上设置有摩擦表面,并且在所述第二联接表面上设置相对面。 摩擦联接器还包括用于在第一和第二联接表面上施加预定压力的预紧元件,例如螺栓。 联轴器的摩擦表面包括磨料颗粒,其构成从摩擦表面的基底以高度h突出的硬质凹凸。 磨料颗粒以预定的凹凸密度和厚度设置在基底上。 预定义的密度和密度 大于最小阈值,其峰值密度和最小值小于2.5 * eegr min。 最小阈值由以下关系定义:&eegr; min =&pgr; 4 Pμabr abr 2 h _;;; 2其中&eegr 单位面积(表面积)(m-2); P压(Pa); μabr摩擦系数; H硬度(相对面)(Pa)h高(粗糙度)(μm); &sgr 标准差(粗糙度高度)(m)。