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在制定滑动轴承——卷制轴套技术条件的国家标准时,我们采用了ISO3547—1976“滑动轴承—卷制轴套——尺寸、公差和检验方法”的国际标准中关于检验方法的规定。为了能更深刻地理解这些规定,我们将ISO标准和西德的一些文献做了对比。 根据ISO标准d_1和F规定满足以下条件: 上表中D为轴套在自由状态下的理论外径;D（max）为轴套在自由状态下的理论外径的最大值;d_1是检验模内孔尺寸;F为检验载荷;S为轴套的等效截面积。（详见ISO3547—1976） 以上规定的依据是什么呢? 当轴套放在图（1）中时,（我们取其上半部分）,进行分析。由于轴套外圆表面与检验模具内圆表面之间存在摩擦力,轴套的周长在切向应力的作用下要缩短。假设整圆周长上的缩短为△ι,对于薄壁轴套,
In the development of the national standard for the technical requirements for plain bearings - roll bushings, we apply the ISO 3547-1976 “Plain Bearings - Roll bushings - Dimensions, Tolerances and Test Methods” for international standards regarding inspection methods. In order to understand these rules more deeply, we compared some of the ISO standards with those of West Germany. According to the ISO standard d1 and F provisions to meet the following conditions: D in the table above is the theoretical outer diameter of the sleeve in the free state; D (max) for the sleeve in the free state of the theoretical maximum diameter; d_1 is the test mode Bore size; F is the test load; S is the equivalent cross-sectional area of the sleeve. (See ISO3547-1976) What is the basis of the above provisions? When the sleeve on the map (1), (we take the upper part), for analysis. Due to the friction between the outer surface of the sleeve and the inner surface of the test die, the perimeter of the sleeve should be shortened by the tangential stress. Suppose the shortening on the entire circumference is Δι, for the thin-walled sleeve,