Author Topic: Looking for suitable worm gear  (Read 3086 times)

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Offline cagesTopic starter

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Looking for suitable worm gear
« on: May 02, 2010, 05:16:22 AM »
I am looking for a worm gear box or worm gear set similar to Tamiya worm gear box (http://www.tamiyausa.com/product/item.php?product-id=72004).
There seem to be quite a lot of worm gear sets available but none that can fit onto a 5mm stepper motor shaft.
Does anyone know of a worm gearbox that can be fitted to a 5mm voltage shaft?
Are there any easy ways to adapt the shaft to fit the plastic worm gears available?

Any suggestions would be really helpful. I require the gears for a project at UNI would prefer to use a stepper motor(http://proto-pic.co.uk/products/Stepper-Motor-with-Cable.html).

Thanks,
Daniel

Offline Soeren

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Re: Looking for suitable worm gear
« Reply #1 on: May 02, 2010, 08:12:04 PM »
Hi,

There seem to be quite a lot of worm gear sets available but none that can fit onto a 5mm stepper motor shaft.
Does anyone know of a worm gearbox that can be fitted to a 5mm voltage shaft?
Are there any easy ways to adapt the shaft to fit the plastic worm gears available?
There is lots, but mostly, they come with both input- and outputshafts, while for the Tamia, the worm is pressed onto the small diameter shaft/axle of the motor.

To use the mentioned two together, either get the shaft of the stepper turned down to the right diameter for the worm (hard, I wouldn't), or make a shaft coupler from a brass tube about 20 mm long or so, 7..9 mm outside diameter, with an inside diameter fitting an axle that fits the worm. Then drill half the tube up to 5mm, and drill and tap holes for set screws.

You might wanna take a look at Vex gears as well, they have a 20:1 box that seems far stronger than the Tamia parts and you can build one yourself with up to 60:1 in one "go". You can add some of course, 2 of the 20:1 in series will give you 400:1.
Regards,
Søren

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Offline cagesTopic starter

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Re: Looking for suitable worm gear
« Reply #2 on: May 03, 2010, 04:51:49 AM »

You might wanna take a look at Vex gears as well, they have a 20:1 box that seems far stronger than the Tamia parts and you can build one yourself with up to 60:1 in one "go". You can add some of course, 2 of the 20:1 in series will give you 400:1.


Thanks, will have a look at the Vex gears. Think I will have to build a coupler as you suggested.

Cages

 


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