Tooth forces

Straight teeth:
White arrow: driving pinion
Black arrow: driving gear wheel
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
vertandingskrachten-1
Helical gear with parallel axes:
White arrow: driving right helix pinion
Black arrow: driving left helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
vertandingskrachten-2
Helical gear with parallel axes:
White arrow: driving left helix pinion
Black arrow: driving right helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
vertandingskrachten-3
Helical gear with crossing axes:
White arrow: driving right helix pinion
Black arrow: driving right helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
vertandingskrachten-4
Helical gear with crossing axes:
White arrow: driving left helix pinion
Black arrow: driving left helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
vertandingskrachten-5
Conical straight teeth:
White arrow: driving pinion
Black arrow: driving gear wheel
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
vertandingskrachten-6
Conical helical teeth
White arrow: driving left helix pinion
Black arrow: driving right helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
vertandingskrachten-7
Conical helical teeth
White arrow: driving right helix pinion
Black arrow: driving left helical gear
Fu1 = Interacting tangential force on the pinion
Fu2 = Interacting tangential force on the wheel
Fr1 = Interacting radial force on the pinion
Fr2 = Interacting radial force on the wheel
Fa1 = Interacting axial force on the pinion
Fa2 = Interacting axial force on the wheel
vertandingskrachten-8
Worm and worm gear pair
White arrow: driving right hand worm
Black arrow: driving right worm wheel
Fu1 = Interacting tangential force on the worm
Fu2 = Interacting tangential force on the worm wheel
Fr1 = Interacting radial force on the worm
Fr2 = Interacting radial force on the worm wheel
Fa1 = Interacting axial force on the worm
Fa2 = Interacting axial force on the worm wheel
vertandingskrachten-9
Worm and worm gear pair
White arrow: driving left hand worm
Black arrow: driving left worm wheel
Fu1 = Interacting tangential force on the worm
Fu2 = Interacting tangential force on the worm wheel
Fr1 = Interacting radial force on the worm
Fr2 = Interacting radial force on the worm wheel
Fa1 = Interacting axial force on the worm
Fa2 = Interacting axial force on the worm wheel
vertandingskrachten-10