汽车、拖拉机挂挡齿轮端部倒角有直形(图1)和圆孤形(图2)两种,圆弧形倒角齿轮挂挡较灵活。但倒角时因齿轮模数不同,其齿端倒角R值也不相同。所以,要通过计算使R＇(倒角刀刃圆弧)等于R(齿端圆弧),就需求 Car, tractor hanging gear chamfer end of a straight (Figure 1) and round solitary (Figure 2), arc gear chamfer gear more flexible. However, chamfering due to different gear modulus, the chamfer R value is not the same. So, to make R ’(chamfered edge arc) equal to R (tooth end arc), it is required