How to make a rotational damper?

In summary, to make a damper for a rotating system, similar methods used for a linear system can be applied. For a wind-up toy, adjusting the gear ratio or adding a brake can slow it down. Alternatively, using a fan or a clock-like mechanism can also regulate the speed. Another option is to rig the toy with sails or use a servo-pump controlled by a pendulum.
  • #1
pkppv1084
1
0
How does one go about making a damper for a rotating system? Let's say we have a wind-up toy, and we want it to go slower, or something like that.

Sorry for such a basic question, but I can't really figure out a decent way to do this.

Any ideas?
 
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  • #2
Pretty much the same way as you would for a linear system ...

To make a wind-up toy go slower, though, you change the gear ratio or add a brake.
Look at the disk brakes on your car.
 
  • #3
Use Google and search for "eddy current dampers". This mechanism may be suitable.
 
  • #4
As an alternative to brakes, you could include a tiny fan geared so that it spins fast enough to limit the overall speed of the toy. The fan will consume energy, but so would brakes. The fan blades would be oriented so their chord is parallel to the axis of rotation, so that the only thrust generated is radial.

A complex alternative would be some type of clock like mechansim that relies on mechanical harmonic motion to regulate the speed of a driven gear.
 
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  • #5
Rig the toy with sails...
 
  • #6
servo-pump
 

1. What is a rotational damper?

A rotational damper is a mechanical device that is used to slow down or control the movement of a rotating object. It is typically used in machinery to prevent excessive vibrations or to control the speed of rotation.

2. How does a rotational damper work?

A rotational damper works by utilizing a fluid or viscous material, such as oil or silicone, to create resistance to the rotational movement. This resistance helps to absorb and dissipate the energy of the rotating object, thereby slowing it down.

3. What are the main components of a rotational damper?

The main components of a rotational damper include a housing, a rotor, and a viscous material. The housing is the outer casing that holds the damper together, while the rotor is the rotating part that creates the movement. The viscous material is typically contained within the housing and provides the resistance to rotation.

4. How is a rotational damper different from a shock absorber?

A rotational damper and a shock absorber are similar in that they both use a viscous material to control movement. However, a rotational damper is specifically designed for rotational movement, while a shock absorber is used for linear movement.

5. How can I make a rotational damper?

To make a rotational damper, you will need to have a good understanding of mechanical engineering and fluid dynamics. The process involves designing and constructing a housing, rotor, and viscous material that work together to control rotational movement. It is recommended to consult with a professional engineer for the best results.

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