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图1所示的主轴支承由一对滚动轴承组成,而以内、外隔圈将它们分开,装配时可以先测出单个轴承在规定的外加轴向负荷下内、外圈的轴向相对位移量δ,然后根据两个轴承测得的δ值之和,配磨内、外隔圈,使轴承装入后具有所需的预负荷。但在图2所示的Y7063A型磨齿机的头架中,一对滚动轴承仅通过外隔圈分开,轴承的预负荷是通过修磨垫圈1的厚度X来调整的。在这种情况下,如何确定垫圈1的X值使轴承得到规定的预负荷?
The main shaft support shown in Fig. 1 consists of a pair of rolling bearings, which are separated from each other by an inner ring and an outer ring. The axial relative displacement amount δ of the inner ring and the outer ring of a single bearing under a predetermined axial load can be measured first , And then according to the two bearings measured value of δ, with the mill, the outer ring, the bearings loaded with the required preload. However, in the headstock of the Y7063A type gear grinding machine shown in FIG. 2, the pair of rolling bearings are separated only by the outer spacer, and the preload of the bearing is adjusted by dressing the thickness X of the washer 1. In this case, how to determine the X value washer 1 to get the specified preload bearing?