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发明公开
CN106321639A 一种四点接触球轴承滚动体球径的选配方法 有权 转让

一种四点接触球轴承滚动体球径的选配方法
摘要：
本发明的目的在于提供一种四点接触球轴承滚动体球径的选配方法，以选取不同设定游隙值所对应的滚动体。所述四点接触球轴承滚动体球径的选配方法包括以下步骤：1)设定外圈沟道圆弧工作段的曲率半径Re，设定外圈沟道圆弧工作段的曲率半径Ri，四点接触球轴承标准滚动体的公称接触角α，获取总游隙为0的标准滚动体的球径Dw；2)获取非标准滚动体与外圈的游隙2a与非标准滚动体的球径D的关系式一，获取非标准滚动体与内圈的游隙2b与非标准滚动体的球径D的关系式二；关系式一通过以下公式得出；X02+(Y0-a)2＝(D/2)2(2)，(D/2)/Re＝X0/(X0+e1)(3)，e1＝(Re-Dw/2)·sinα(4)，e2＝(Re-Dw/2)·cosα；同理得出关系式二；3)设定总游隙Gr，根据关系式一、二以及总游隙Gr与2a、2b的关系式Gr＝2a+2b得出非标准滚动体的球径D。
摘要（英）：

The invention aims to provide a matching method for the ball diameters of four-point contact ball bearing rollers so as to select the rollers corresponding to different set clearance values. The matching method for the ball diameters of the four-point contact ball bearing rollers includes the following steps that (1) the curvature radius Re of an outer ring raceway arc working section is set, the curvature radius Ri of the outer ring raceway arc working section is also set, the nominal contact angle alpha of the standard roller of a four-point contact ball bearing is further set, and the ball diameter Dw of the standard roller with the total clearance being zero is obtained; (2) a first relational expression between the clearance 2a of the non-standard roller and an outer ring and the ball diameter D of the non-standard roller is obtained, and a second relational expression between the clearance 2b of the non-standard roller and an inner ring and the ball diameter D of the non-standard roller is also obtained; the first relational expression can be obtained through the following formulas (see the formulas in the specification); and the second relational expression is obtained in a similar way; and (3) the total clearance Gr is set, and accordingly the ball diameter D of the non-standard roller can be obtained according to the relational expression Gr=2a+2b of the first relational expression, the second relational expression and the total clearance Gr together with the 2a and 2b.

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