I have to project a mechanism that transform a rotation of $30 \pi/\text s$ from a engine in a rotation of $(\pi/4)/\text s$.

One of the gears should be 120x bigger than the other, but this is too much.

The gears should have a ray $< 30\text{ cm}$.

How can I create this mechanism?

  • 1
    $\begingroup$ Two stage reduction, worm gears, harmonics gears. There are many options. $\endgroup$ – Eric S Nov 16 '17 at 2:29
  • $\begingroup$ An epicyclic reduction unit may work well... $\endgroup$ – Solar Mike Nov 16 '17 at 7:34
  • $\begingroup$ A harmonic drive could do this nicely in a small package and with near zero backlash and high torque. $\endgroup$ – user6335 Nov 16 '17 at 9:18

In practice probably the best solution is to find an off the shelf gearbox with the reduction ratio that you require for example :

https://www.ondrivesus.com/gearboxes-speed-reducers (not a recommendation)

Unless you have specialist knowledge designing and manufacturing a high ratio gearbox from scratch is unlikely to be very cost effective.

That way you just need to find one which meets your requirements for reduction ration and torque capacity.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.