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目前在齿轮生产的行业中,常会碰到内孔有键槽或花键槽的渗碳淬火齿轮。这种齿轮的键槽是很难切削的。现介绍我厂在实际生产中两种简便的方法,能可靠地解决这种齿轮的键槽难于切削的问题: 第一种:车去渗碳层方法操作程序如下: 1.金加工:一般齿轮的渗碳深度是0.6～1.2,加上渗碳区域的过渡层(约0.3～0.5)。所以渗碳前的精加工时,在齿轮内孔及孔口两端面上留有1.5～2mm的余量,见图1。 2.齿轮渗碳。 3.精加工车去碳渗层:把内孔及端面上的余量精车掉,使内孔、端面尺寸达到最终尺寸或工艺要求尺寸。精车装夹时要校正齿轮节圆及端面,使其跳动量规定在允许范围内(允跳公差是图纸要求形位公差
Currently in the gear production industry, often encounter a key hole or spline groove carburizing quenching gear. The keyway of this gear is hard to cut. Now I introduce two kinds of practical methods in our factory, which can reliably solve the problem that the keyway of this kind of gear is difficult to cut. The first one: The car goes carburizing layer method The operation procedure is as follows: 1. Gold processing: general gear Carburizing depth is 0.6 ~ 1.2, plus the transition zone carburizing (about 0.3 ~ 0.5). Therefore, before finishing carburizing, there is a margin of 1.5-2mm on both ends of the inner hole of the gear and the orifice, as shown in Fig. 1. 2. Gear carburizing. 3 finishing car to carbon diffusion layer: the hole and the end of the balance on the fine car out, so that the hole, the end face size to the final size or size requirements of the process. Fine car when clamping to adjust the pitch circle and the end face, so that the provisions of the beating within the allowable range (allow jump jump tolerance is the shape of the drawings required tolerance