齿数z2?45 z1?17 节距p?38.10mm 滚子直径dr?22.23mm 排距pt?45.44mm 分度圆直径d2?pp?546.186mm d1??207.347mm 180180sinsinz2z1齿顶圆直径da2?p(0.54?cot180180)?38.1(0.54?cot)?565.429mm z245 da1?p(0.54?cot齿根圆直径df180180)?38.1(0.54?cot)?224.391mm z1172?d2?dr?546.186?22.23?523.956mm
df1?d1?dr?207.347?22.23?185.117mm
内链节内宽b1?25.22mm
齿宽 bf?0.93b1?0.93X25.22?23.455mm
齿侧凸缘或排间槽直径
dg2?pcot180180?1.04h2?0.76?38.1?cot?1.04?36.2?0.76?506.447mm z245dg1?pcot180180?1.04h2?0.76?38.1?cot?1.04?36.2?0.76?165.409mm z117
中心距计算：
a0?(30～50)p?(30～50)?38.10?(1143～1905)mm
实际中心距为：1567mm
f3?{z2?z1245?172}?()?19.859 2?2?链长节数：
X0?2a0z1?z2f3p2?156717?4519.859?38.1????? p2a038.121567?82.257?31?0.483?113.74取X?114节 链条长度：L?Xp114?38.1??4343.4mm 10001000CAD绘出实际传动链长度计算：
1558?2?917?303?4336mm
传动链链轮尺寸及链条长度计算
