我厂生产的直连杆品种比较多,每一种连杆的螺栓孔（或螺钉孔）的中心距尺寸都不一样,为此我们设计了一种输出轴之间中心距离可以调整的分轴箱,以适应加工多种规格的连杆。 一、分轴箱的设计原理 为了使分轴箱的输出轴之间的距离可以调整。设计时采用三个齿轮如图1所示。齿轮1和齿轮2在一条水平线上。齿轮2是固定的（与车床主轴联接）,齿轮3是可动的。这样通过调整齿轮3,可以使齿轮1在A—A水平线上移动,以得到所需要的中心距。 I plant the production of more straight rod varieties, each link bolt hole (or screw hole) of the center distance size is not the same, for which we have designed a center axis between the output shaft can be adjusted sub-axis Box, to adapt to the processing of a variety of specifications of the connecting rod. First, the design principle of the splitter box In order to make the splitter box output shaft distance can be adjusted. Design using three gears shown in Figure 1. Gear 1 and gear 2 in a horizontal line. Gear 2 is fixed (with lathe spindle coupling), gear 3 is movable. In this way, by adjusting the gear 3, the gear 1 can be moved on the A-A horizontal line to obtain the desired center distance.