Gear Design 2

Satyama · Feb 10, 2019

Hi,

I have been asked to "Model a helical worm 'crown gear' for a single start worm thread placed 'radially' and prepare AUTOCAD drawing". I am trying to model a hellical crown gear and 'somehow' fit a worm gear placed radially on it.

What do I actually have to make and how to make it?

Any leads would be appreciated.

3DDave · Feb 11, 2019

Crown gears are face gears; they don't have a 'radial' mesh.

If it's a regular worm gear then you need to specify the diameter and the ratio of the worm wheel to the worm gear.

See

https://khkgears.net/product-category/worm-gear-pair/technical-information-of-worm-gear/

and

http://www.roymech.co.uk/Useful_Tables/Drive/Worm_Gears.html

spigor · Feb 14, 2019

Is this what you have in mind:

https://www.youtube.com/watch?v=gRriAf5snqs

?

Satyama · Feb 17, 2019

Yes @spigor . This is what I had in mind.

spigor · Feb 17, 2019

So, you can read what you need to do here:

https://www.powertransmission.com/a...piroid,_Helical,_Spiral_Bevel_and_Worm_Gears/

Satyama · Feb 17, 2019

Thank you, this is helpful. I will let you know once I have made it.

Dilawar amjad · Mar 5, 2019

can someone increase the efficiency of a modern bar rolling mill by changing the design of gearbox? if yes what would be the increase in efficiency?

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