在贯彻JB179—83《渐开线圆柱齿轮精度》标准对,如河将JB179—60标准的齿厚极限偏差及公法线平均长度极限偏差套改为JB179—83标准,是目前急需完成的工作。根据JB179—83标准规定,在齿轮及齿轮副工作图上,应标注齿轮及齿轮副的精度等级和齿厚极限偏差及齿轮副的侧隙。根据“级套级”原则,若以计算 In the implementation of JB179-83 “involute cylindrical gear accuracy” standard, such as the river will JB179-60 standard tooth thickness limit deviation and the average length of the normal line deviation limit set to JB179-83 standard, is the urgent need to complete the work. According to the provisions of JB179-83 standard, gear and gear on the work of the chart, should be marked gear and gear accuracy level and the gear thickness limit deviation and gear side of the backlash. According to “class level” principle, if calculated