Making a Flat spring 1

[mwenye]

Hi,

I need to manufacture a flat spring that when loaded will activate a switch.
The load that will be applied is very small about 0.05N and it will be applied at the centre of the spring.

Below is an image of how it will operate.

http://blog.cencophysics.com/wp-content/uploads/deflection-fig2.jpg

I would like to know how difficult it would be to manufacture something like this. I have searched all over and cannot find information on small flat springs.

Many Thanks

 

[desertfox]

Hi mwenye

Making a flat spring as you have shown would be fairly easy to make, however you need to decide what deflection for the spring you need and match the spring design to the force required.
Here is a link to a spring manufacturer:-

http://www.kato-entex.co.uk/flatspringspressings.html

desertfox

 

[mwenye]

Thanks for the information desertfox.

 

[desertfox]

hi mwenye

your welcome

 

[koza19]

mwenye,
You can find the equations you need to solve this in the SMI handbook go to smihq.org. They sell many books which should help you find the answer.