What is the output speed at 100 rpm arm rotation in an epicyclic gear box?

In summary, The conversation discusses difficulties in understanding a diagram and how the arm of a system can rotate without locking something. The solution is explained as the arm connecting the planetary gears, and if the arm is at 0 rpm, there is a standard reduction between the input and output. At 300 rpm, the system is locked and the output shaft will also be at 300 rpm. The output at 100 rpm can be found by extrapolating between these two points.
  • #1
gtbiyb
10
0
Hi,
Cant understand this at all, even modeled the set up with lego but still can't fathom it! I can't see how the arm can rotate with locking something.

Cheers
 

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  • #2
hi, The diagram is a bit misleading. the output shaft is attached to the second sun gear S2. input is S1, the arm just connects the planetary gears (P1 and P2). Just think about it this way. If you have the arm at 0 rpm, you have just a standard reduction between the input and output right? that's easy to work out, let's call that output X. Now, if you have the arm at 300 rpm, matching the speed of the input, the system will be locked, and the output shaft will be at 300 rpm. extrapolate what you find between these two points to find the output at 100rpm.

Again,
the output will basically lie 1/3rd between the X (arm = 0 rpm) and 300rpm (arm = 300rpm)
 

Related to What is the output speed at 100 rpm arm rotation in an epicyclic gear box?

1. What is an epicyclic gear box?

An epicyclic gear box is a type of gear system that uses a combination of gears, known as planetary gears, to transmit torque and change the speed of rotation. It consists of an outer ring gear, an inner sun gear, and multiple smaller planet gears that rotate around the sun gear.

2. What is the main problem with epicyclic gear boxes?

The main problem with epicyclic gear boxes is that they are prone to failure due to the complexity of the gear system and the high number of moving parts. This can result in issues such as gear slippage, misalignment, and premature wear and tear.

3. How are epicyclic gear boxes used in industry?

Epicyclic gear boxes are commonly used in industrial applications where precise and efficient speed and torque control is required. They are often found in machinery such as wind turbines, automotive transmissions, and conveyor systems.

4. What are some common solutions to epicyclic gear box problems?

Some common solutions to epicyclic gear box problems include regular maintenance and inspections, proper lubrication, and using high-quality gears and components. In some cases, it may also be necessary to redesign the gear system or replace it with a different type of gear box.

5. How can I prevent epicyclic gear box problems from occurring?

To prevent epicyclic gear box problems, it is important to follow manufacturer recommendations for maintenance and operating conditions. This includes regular lubrication, proper alignment and installation, and avoiding overloading the gear system. It is also important to monitor the gear box for any signs of wear or damage and address them promptly.

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