上泽充通大学 Forces on gears Forces on spur gears Gear 直齿圆柱齿轮传动受力分析 啮合线 Pinion (a) 上游久通大学 Forces on gears ANGHAI HAO TONG UNIVEROIT Forces on spur gears Normal: 2T Tangential F,=2T/d1 N Radial F.=Ftga N Normal F=F/cos a N a)3 Forces on gears Forces on spur gears Normal： Tangential — 1 1 2 b n d T F  Ft  2T1 / d1 N Radial — Fr  Ft tg  N Normal — Fn  Ft / cos  N Forces on gears Forces on spur gears