我厂生产拖拉机齿轮(图1),精度等级为9-8-8(JB179-83),在新齿标宣贯中,使用原有直心轴滚齿夹具(图2),因齿轮孔与心轴间隙大,而达不到工艺要求。为此,我们设计了一种无间隙蛇腹套式的弹性滚齿夹具(图3)。装夹方便,保证了产品质量。使用该夹具后齿圈径跳由原来的0.06～0.15mm下降到0.025～0.06 I plant the production of tractor gear (Figure 1), precision grade 9-8-8 (JB179-83), in the new toothpicks Xuan Guan, the original straight-axis hobbing fixture (Figure 2), due to the gear hole and heart Large shaft clearance, but not up to the process requirements. To this end, we designed a flexible bellows-type elastic hobbing fixture (Figure 3). Convenient clamping, to ensure product quality. After using this fixture, the diameter of ring gear jumps from 0.06 ~ 0.15mm to 0.025 ~ 0.06