Question

What we have to do, to stop the noise from different parts of bicycle, swing or machines?

Answer 1

noises coming from different parts of bicycle , swings or machines are so annoying and frustrating. the main reason behind this can be due to the friction yes the friction is may be the cause of such noises from different parts of bicycle swing or any kind of Machines. you can prevent this friction by oiling or greasing the different parts or by adding some ball bearings to it.
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Answer 2

Noises coming from any mechanical things like machines, bicycle, swing, etc. can be because of loose parts or beacuse of friction between its parts.

Hence, to stop all these noise you can :

1. Tiet all parts.

2. Lubrication of parts can also be done.