半轴齿轮是12马力小四轮拖拉机差速机构中的直齿锥齿轮,图号为12-37143,是我厂近年来生产批量最大的产品之一。其结构形式如图1所示。随着生产批量的不断扩大,原齿坯工艺存在的问题也愈加突出。为适应大批量生产的需要,我们对该工艺进行了改进,经验证后于85年正式纳入生产工艺。两年多的生产实践证明,效果很好。一、原齿坯的工艺路线 (1)在C3163车床上,夹毛坯外圆面①粗车外圆面②、端面④和⑤。 (2)在Z5163钻床上,夹外圆面②钻内孔③。 (3)在C3163车床上车内孔两端的倒角。 (4)在L6120拉床上拉削花键孔③的底径。 (5)在CB3463车床上以圆孔③定位粗车外圆锥 Axle gear is 12 horsepower small four-wheel tractor differential mechanism of straight bevel gear, drawing No. 12-37143, is our factory in recent years, one of the largest production volume of products. The structure of the form shown in Figure 1. With the continuous expansion of production volume, the original problems in the blank technology is also more prominent. In order to meet the needs of mass production, we have made improvements to the process and, after verification, formally incorporated it into the production process in 85 years. More than two years of production practice has proved that the effect is very good. First, the original gear billet process (1) in the C3163 lathe, clamping rough cylindrical surface ① rough car ②, end face ④ and ⑤. (2) In the Z5163 drilling machine, the outer surface of the clip ② drill hole ③. (3) on the C3163 lathe chamfer at both ends of the hole. (4) Broach the bottom diameter of the spline hole (3) on the L6120 broaching machine. (5) In the CB3463 lathe to the rough positioning of the rough outer cone