Do the mechanical design for your final project
DESIGN
To design the 3D object I used Rhino. I designed two double helical gears, by using the "array polar" command. The geares are are rotating by a servo motor. Double helical gears, or herringbone gears, overcome the problem of axial thrust presented by "single" helical gears, by having two sets of teeth that are set in a V shape. A double helical gear can be thought of as two mirrored helical gears joined together. This arrangement cancels out the net axial thrust, since each half of the gear thrusts in the opposite direction resulting in a net axial force of zero. However, double helical gears are more difficult to manufacture due to their more complicated shape.
//Gear
/Double helical gear
/Worm gear
File:
Video
