Planetary Gear

Aim:

Use the following inputs for designing the Planetary Gear

• Ring Gear
  • Module = 2.5 (You must use the metric system in design modeler)
  • Number of teeth = 46
• Sun Gear
  • Number of teeth = 14
    
• Planet gear
• Number of teeth = 16
• Input Speed of the Gear = 200 rpm.
• Number of planet gears = 4
  

Planetary gear:

A planetary gear set is made up of three types of gears; a sun gear, planet gears, and a ring gear. The sun gear is located at the center and transmits torque to the planet gears (blue) which are typically mounted on a moveable carrier. The planet gears orbit around the sun gear and mesh with an outer ring gear. Planetary gear systems can vary in complexity from very simple to intricate compound systems, depending on the application.

Condition:

Gear configurations:

Ring Gear:

No of Teeth=46

module=2.5mm

Face width=12mm

Pressure angle=20 degrees

outside diameter=135mm

Pitch circle diameter: No of Teeth * modulde=46*2.5=115

Sun gear:

No of Teeth=14

module=2.5mm

Face width=12mm

Pressure angle=20 degrees

Nominal shaft diameter=20mm

Pitch circle diameter: No of Teeth * modulde=14*2.5=35mm

Planet gear:

No of Teeth=16

module=2.5mm

Face width=12mm

Pressure angle=20 degrees

Nominal shaft diameter=18mm

Pitch circle diameter: No of Teeth * modulde=16*2.5=40mm

Final assembly:

Plots:

Case 1:

Ring gear fixed

Input = Sun gear

Output = Carrier

Rpm=200

case 2:

Sun gear fixed

Input = Ring gear

Output = Carrier

Rpm =200

Case 3:

Carrier fixed

Input = Sun gear

Output = Planet gear

Rpm =200

Solidworks modeled parts:

https://drive.google.com/drive/folders/1J5RmBz7tXAS9ptLI2st_kZX-ZmOqYMWT?usp=sharing

Results:

The gears are mated and required conditions are obtained and graphs are plotted