一、JB179-83中关于齿轮副轴线平行度的规定 1.由于在轴上齿轮的安装位置以及轴的支承方式有各种不同情况,难以全面照顾,所以在JB179-83《渐开线圆柱齿轮精度》标准中,关于齿轮副中心距公差和轴线平行度公差,都只是指装配好的齿轮副而不是箱体孔。 2.装配好的齿轮副,事实上无法直接测量其实际中心距和轴线 A, JB179-83 in the gear pair axis parallelism requirements 1. As the shaft gear mounting position and the shaft support has a variety of different situations, it is difficult to take care of, so JB179-83 “involute cylindrical gear Accuracy ”standard, the gear center distance tolerance and axis parallelism tolerance, are only refers to the assembly of a good gear instead of box hole. 2. Assembled gear pair, in fact, can not directly measure the actual center distance and axis