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从1974年开始,我厂试制北京130汽车转向器总成,其中转向摇臂轴加工较难。因为该零件带有扇形齿轮,顶圆带6°30′的斜度(图1),它与转向螺母的直齿条(压力角30°)相啮合。各个截面的变位系数ξ是不同的,大端为0.3371,小端为负值,中间部位为零,分度圆直径d分=m·Z=5×13=65毫米。现在我们在Y3150滚齿机上附加一个滚齿装置,并采用专用滚刀进行加工。这种加工方法简单,工人容易掌握,操作方便,而且不需添加专用设备,只要将图2的齿轮3、11脱开,就恢复为原来的通用滚齿机用途,
Since 1974, our factory trial Beijing 130 car steering gear assembly, steering rocker shaft machining more difficult. Because the part has a sector gear, the top circle has a 6 ° 30 ° pitch (Fig. 1) that engages the straight nut of the steering nut (pressure angle 30 °). The variation coefficient ξ of each cross section is different, the big end is 0.3371, the small end is negative, the middle part is zero, the dividing circle diameter d points = m · Z = 5 × 13 = 65mm. Now we attach a hobbing gear to the Y3150 gear hobbing machine and use a special hob for machining. This processing method is simple, easy to grasp workers, easy to operate, and do not need to add special equipment, as long as the gear 3, Figure 11, disconnect, to return to the original universal gear hobbing machine,