Planetary Gear
Aim :- Analysis of Planetary gear system.
Objective :- Use the following dimensions to create a assembly in solid works.
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
- Input Speed of the Gear = 200 rpm.
- Number of planet gears = 4
Theory :- An planetary gear consists of two gears mounted so that the center of one gear revolves around the center of the other. A carrier connects the centers of the two gears and rotates to carry one gear, called the planet gear or planet pinion, around the other, called the sun gear or sun wheel. The planet and sun gears mesh so that their pitch circle roll without slip. A point on the pitch circle of the planet gear traces an planetary curve. In this simplified case, the sun gear is fixed and the planetary gear roll around the sun gear.
Content :- The three condition of the motion analysis is taken into consideration.
First of all we should discuss the steps that are taken to create the gears that are required for planetary gear assembly.
Ring Gear : There are total 46 teeth in the ring gear. That is given as requirement.
Planet Gear : The total number of teeth are 16. The teeth of the planetary gear is calculated.
Sun gear : There are total 14 teeth in the ring gear. That is given as requirement
Base : Create a base for the planetary gear assembly as shown in the figure
Assembly : Assemble the created parts as shown below
The following are the parameters on which the motion analysis of the palnetary gear assembly is performed
1. Carrier fixed
The following is the image of the graph of output velocity of the ring. In this graph the carrier is fixed
Video link is given below to demonstrate the video of the planetary gear assembly where the carrier is fixed
2. Ring gear fixed : The following is the image of the graph of output velocity of the ring. In this graph the ring gear is fixed
Video link is given below to demonstrate the video of the planetary gear assembly where the ring gear is fixed
3. Sun gear fixed : The following is the image of the graph of output velocity of the ring. In this graph the sun gear is fixed
Video link is given below to demonstrate the video of the planetary gear assembly where the ring gear is fixed
Conclusion : We can conclude that when the ring gear is fixed the graph of velocity output of the ring gear is zero
The graph when the carrier is fixed the following graph has constant value of angular velocity of the ring gear
The graph when the sun gear is fixed is not constant to a ceratin value of angular velocity output of the ring gear
Link :- Google drive link of the planetary gear assembly and its parts is given below
https://drive.google.com/drive/folders/1n7ONjoLvm-RZIsVoLeryMK4eUFyh7t9C?usp=sharing
The following are the link of youtube videos of the planetary gear system