齿轮节圆夹具是磨齿轮光孔的一种夹具。夹具本体内腔三段弧线对应点半径误差不超过0.005毫米,需要铲磨。本体内腔结构如图1。有些齿轮厂采用专用分度盘进行铲磨分度,现举例介绍我厂在C8955铲床上,利用转动分度结合子进行铲磨分度方法如下:一、速比的选用主轴和分度结合子的速比有1:1,1:14,1:16三种。选用1:16,分度精度可达最高。速比1:16即主轴转1转,分度结合子转16转或960格(分度结合子一圈刻60格)。二、分度结合子分度格数n的计算 Gear Jockey Jigs are a fixture for grinding gear light holes. Clamp body cavity arc corresponding to the arc radius of not more than 0.005 mm error, need shoveling. Body cavity structure shown in Figure 1. Some gear factory uses a special indexing plate shovel grinding indexing, are an example of my plant in the C8955 shovel bed, the use of rotary indexing shovel indexing methods are as follows: First, the ratio of spindle and indexing combiner The speed ratio of 1: 1, 1: 14, 1:16 three. Selection of 1:16, indexing accuracy up to the highest. Speed ​​ratio 1:16 that the spindle to 1 turn, indexing sub-turn 16 or 960 grid (indexing sub-circle engraved 60 grid). Second, the indexing sub-index lattice number n calculation