圈上海夫通大华 Fundamental Law of Gearing Meshing Action ⊙200000 UG VRIGH,Umh 圈上泽夫道大学 Fundamental Law of Gearing ▣ The common normal of the tooth profiles,at all contact points within the mesh,must always pass through a fixed point on the line of centers,called the pitch point pressure angle rotated in direction of driven gear pitch cireles m) pitch point leaving contact length of action Z angle of recess angle of approach driving (cw) driven(cew) are of action (beginning contact) center distance C. addendum circles 1515 Meshing Action Fundamental Law of Gearing  The common normal of the tooth profiles, at all contact points within the mesh, must always pass through a fixed point on the line of centers, called the pitch point Fundamental Law of Gearing