Can Switching from Gear to Roller Drive Reduce Noise in Toy Mechanisms?

  • Thread starter Thread starter starcrossed
  • Start date Start date
  • Tags Tags
    Drive Gear Roller
Click For Summary

Discussion Overview

The discussion revolves around the potential for reducing noise in toy mechanisms that utilize gear drives. Participants explore various alternatives, including switching to roller or friction drives, and consider other methods for minimizing noise from gear systems.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether replacing gears with roller or friction drives would effectively reduce noise, while also seeking additional methods to mitigate noise from gear drives.
  • Another participant suggests that noise reduction may depend on proper gear meshing, backlash settings, and the type of gears used, indicating that helical gears might be quieter than straight cut gears.
  • Concerns are raised about the materials used for the gears and the importance of lubrication in reducing noise.
  • One participant mentions that the enclosure of the gears could contribute to noise levels, suggesting that resonant panels might amplify the sound.
  • A suggestion is made to consider reducing tooth size and backlash, although this may not always be feasible depending on the application and speeds involved.
  • Another participant raises the question of whether the gear material is polymer, implying that using polymer could be beneficial for noise reduction.
  • The importance of the bearing fit for the gear shaft is highlighted, with a loose fit potentially leading to increased noise, along with the recommendation to ensure proper lubrication.

Areas of Agreement / Disagreement

Participants present multiple competing views on how to address noise in gear mechanisms, with no consensus reached on the effectiveness of switching to roller or friction drives or other proposed solutions.

Contextual Notes

Some suggestions depend on specific applications and conditions, such as gear type, material, and structural feasibility, which remain unresolved in the discussion.

starcrossed
Messages
11
Reaction score
0
I am using a gear mechanism in one of the toys that i am making for my baby. but the gear makes a lot of noise. Will replacing it with Roller drive or friction drive reduce the noise?

Is there any other way to reduce noise from gear drive?
 
Engineering news on Phys.org
Gears are often a source of noise, but this can be reduced. Firstly, are the gears matched such that they mesh correctly? Is the backlash between the gears set?

Secondly (I'm assuming these are spur gears), are they straight cut? A lot of noise can be minimised by replacing these with helical cut gears, though you'll then have to consider shaft thrust.

Thirdly, what are the gears made of, and are they sufficiently lubricated?

Finally, how are the gears enclosed? Dealing with engines, complaints of "noisy gear train" are often a result of the gear train cover being a large, resonant panel. Sure, it sounds and looks like gear train noise, but isolating that panel can reduce the noise by huge amounts. Possibly not relevant to your application, but it's worth thinking about.

It's impossible to say whether the use of roller or friction drive will reduce noise without seeing your specific application.
 
Hallo starcrossed! :smile:
starcrossed said:
I am using a gear mechanism in one of the toys that i am making for my baby. but the gear makes a lot of noise.

:rolleyes: How much noise does the baby make? :smile:
 
thanks a lot
 
The simple move, if it can be done structurally, is to reduce tooth size (finer mesh) and decrease backlash. That may not be possible. It also depends on the speeds you're talking about.
 
What is gear material is not the polymer one?if not make it polymer...
 
The bearing (the hole) where the shaft of the gear goes is also important, if its too loose it will be noisy. Also lube the gears well.
 

Similar threads

  • · Replies 10 ·
Replies
10
Views
3K
Replies
13
Views
2K
Replies
1
Views
2K
  • · Replies 19 ·
Replies
19
Views
4K
  • · Replies 13 ·
Replies
13
Views
2K
  • · Replies 5 ·
Replies
5
Views
4K
Replies
3
Views
2K
Replies
13
Views
4K
  • · Replies 19 ·
Replies
19
Views
4K
Replies
2
Views
3K