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View Full Version : Pulley kit to step up a stepper RPM



HankMcSpank
08-07-2009, 07:15 PM
Hi there,

I'm about to build my second coil winder...it'll be loosely based on a couple of stepper motors contorolled by Mach3 & a user plugin I've found on the Artsoft website (which was only 80% complete)

the thing is...stepper motors aren't famed for high RPM, so it seems that 4:1 gearing would be prefereable using pulleys (this person has used a pulley system in his system

YouTube - cnc pickup winder - main motor test

the thing is where can I source such pulley wheels & belts? (preferably with centre holes/bores that are stepper friendly....Argos don't sell em!

Many thanks

irving2008
08-07-2009, 08:21 PM
Hi there,

I'm about to build my second coil winder...it'll be loosely based on a couple of stepper driven by Mach3 & a plugin I've found 9which was only half done)

the thing is...stepper motors aren't famed for high RPM, so it seems that 4:1 gearing would be prefereable using pulleys (this person has used a pulley system in his system http://www.youtube.com/watch?v=Yr2DgNFcp4I&eurl=http%3A%2F%2Fmusic%2Delectronics%2Dforum%2Eco m%2Ft13215%2D2%2F&feature=player_embedded)

the thing is where can I source such pulley wheels & belts? (preferably with centre holes/bores that are stepper friendly....Argos don't sell em!

Many thanks
RS Components (http://uk.rs-online.com), search on Pulley, you'll more than enough to play with

Kn8
09-07-2009, 06:50 AM
HPC Gears have a very wide range, including pulleys and belts. www.hpcgears.com.
Ivan.

NB70
09-07-2009, 11:17 AM
Here's another one to try:

http://www.technobots.co.uk/acatalog/Online_Catalogue_Aluminium_Timing_Pulleys_411.html

Good luck with the coil winder!
Nathan

I attached some DXF files of HTD pulleys if you want to try to make your own with your CNC router (maybe Delrin would work?)

HankMcSpank
09-07-2009, 10:56 PM
Hi Ivan,

Thanks for that URL - that's a good selection they have there...I can't get the price list downloaded though (BTW, I've run out of 'thanks' credits today, else I'd have given you one too!)

Nathan ...excellent stuff...many thanks.

Kn8
10-07-2009, 09:21 AM
Hi HankMcSpank

The prices are shown in the catalogue, this can be down loaded form there website It is 43.5MB in size, in pdf format, or you can request a printed copy of HPC Gears catalogue to be sent by post FREE of charge. :yahoo:

Ivan.

HankMcSpank
11-07-2009, 10:49 PM
Wow Clanzer, what a involved bit of engineering - that must have taken you a fair while to knock up?

I'm almost embarassed by the '14 old' kludger effort that I've thrown together! (in my defence, I need something in place quick guv)

I'll get a vid posted up of my winder erhmm ...winding, when I get a chance. This was the outcome of its 'first wind' two nights ago...

http://img517.imageshack.us/img517/5651/31704561.th.jpg (http://img517.imageshack.us/i/31704561.jpg/) Note: the acrylic bobbin th copper has been wound onto was homemade using scrap bits of perspex on my homemade CNC - pretty much my 'proof of concept' first attempt! It's a bit austere looking & it looks a little lopsided too! (a littl higher on the right!)

The winder itself still needs a little bit of 'tweaking' (for one, the helix M8 threaded rod pushed over the traversal stepper's shaft is somewhat 'out of true' as I don't have a lathe yet to bore/drill out the centre of the nylon M8 threaded rod!)