cnc winder controller board

[-Elepro-]

Would those pulleys fit the stepper motors you recommended in post #138 ? I ask that because I ordered a couple of those Lin Engineering 4218L-01-11 bipolar stepper motors.

If yes, where did you source those?.

they fit because you have to drill center hole.... but i bought in italy.....
if you want buy in USA you can see at message #169 .... very good prices... but their 20T has 1/4 hole then you need a collar (hole is 1/4 but motor shaft 0.1968") or you can ask if they have one without hole....

[David King]

Brad, I can help with the sleeves if necessary but ask Hubbard if they have ones with 5mm holes or whatever your motor shafts turn out to be.
http://stores.shop.ebay.com/HUBBARD-...34Q2ec0Q2em322
David

[RedHouse]

they fit because you have to drill center hole.... but i bought in italy.....
if you want buy in USA you can see at message #169 .... very good prices... but their 20T has 1/4 hole then you need a collar (hole is 1/4 but motor shaft 0.1968") or you can ask if they have one without hole....

It's too Mickey-Mouse using a collar, I'll need to find some pulleys that can be drilled.
(or just the right size to begin with)

Most of the stuff on that Hubbard eBay store is 1/4" shaft, I'll need to look elsewhere. I wish I'd have know about all this before ordering those steppers, I had emailed you about others that did have 1/4" shafts but never heard back from you about it because you were on vacation.

[David King]

What the heck is wrong with using sleeves? I do it all the time and never had a problem? It's a whole lot more accurate than trying to drill a hole in the center of an un-drilled pulley.

[RedHouse]

What the heck is wrong with using sleeves? I do it all the time and never had a problem? It's a whole lot more accurate than trying to drill a hole in the center of an un-drilled pulley.

To each his own David. More power to ya!.

I'll do mine my way if you don't mind. and BTW lathes drill accurately in un-drilled pulleys, it's what they do.

[Arndawg56]

What the heck is wrong with using sleeves? I do it all the time and never had a problem? It's a whole lot more accurate than trying to drill a hole in the center of an un-drilled pulley.

It's all about tolerance. I like my parts tight, and my women loose!

-Dawgdo-

[RedHouse]

It's all about tolerance. I like my parts tight, and my women loose!

-Dawgdo-

YEAH BABY!

(and no sleeves on the shafts! )

[Joe Gwinn]

I'll do mine my way if you don't mind. and BTW lathes drill accurately in un-drilled pulleys, it's what they do.

So do vertical mills with boring heads.

Or drill presses with reamers. In either case, one must make sure that the table is perpendicular to the rotation axis of the spindle.

Many pulleys with undrilled hubs will come with a pilot hole or at least a spot drilled center dimple, precisely so one can find the center easily. This is particularly needed on pulleys machined from sand castings.

[David King]

Brad,
I forget that you have a lathe. If I screw up a sleeve, I can toss it out and start over. If I screw up a hole -well...

[RedHouse]

Brad,
I forget that you have a lathe. If I screw up a sleeve, I can toss it out and start over. If I screw up a hole -well...

I have a friend with a lathe, he runs a hotrod shop but the only thing is, it's hard to get him to work on stuff he's allways really busy.

I was thinking about asking BruceJ, he's got a machine shop setup.

[David King]

I have a machine shop too. That's what I do.

[David Schwab]

I have a machine shop too. That's what I do.

You have a big 'ol milling machine, right?

[-Elepro-]

What the heck is wrong with using sleeves? ....

i agree.... not problems with sleeve... it is the right mechanical solution

...and...Brad, i thought this was a very small problem for you

[RedHouse]

i agree.... not problems with sleeve... it is the right mechanical solution

...and...Brad, i thought this was a very small problem for you

It's not the size of your shaft, it's how you use it!

A sleeve is indeed the right mechanical solution for a warn or otherwise incompatible shaft, but by far the correct solution is using the correct motor shaft and pulley size to begin with, but as I said, to each his own.

Let's review the options:

1. Buy a motor and pulley with incomaptible shaft sizes, and then we each have get spacers/collars fabricated on a Lathe or Mill.
2. Buy a motor and pulley with stock compatible shaft/hole sizes and move forward with the rest of the work.

Hmmm, seems like option 2 might likely be more popular with most people.

Elepro, if we are looking at this test build for a possible group-buy you do understand most folks are not likely going to appreciate making pulleys fit onto shafts they are not designed for. For most winders here, lathe and mill operations aren't even on the menu.

IMHO a project of this level will be more attractive to a group-buy if we can get the parts list worked out excluding additional machinine shop services.

It's looking like 1/4" pulley holes are kind of standard at the surplus stores, there are a few motors on that Alltronics website that had 1/4" shafts, would either of these work well for us:

Anaheim-Automation-23L004S-LW8

Lin-Engineering-5718X-01E-01-bipolar-

...If I screw up a sleeve, I can toss it out and start over. If I screw up a hole -well...

I have a machine shop too. That's what I do.

David, not to be a smartass or anything but how can you screw up a hole in a pulley if it's what you do? anyway when you ask what's the problem with sleeves I'd answer with what's the problem with getting compatible motors and pulleys?

IMHO doing this test build is not about the challenge of salvaging incompatible parts, it's about putting together the correct parts for the build. I know you're in a hurry to get this going for whaterever reasons but I have a different approach, I'm trying to get this worked out in case we want to do a group-buy. You have a machine shop at your disposal (and it's what you do) you're the exception to the rule because you can dink around making whatever custom pieces required to get your CNC Winder going but that won't help the rest of us unless.... are you volunteering to build sleeves for everyone?

Otherwise I need to be seeking (and finding) the correct parts which will be available to everyone if we do a group-buy or whatever. Those controllers you found for $22 were perfect, the source has lots of them available and they are compatible with Elepro's design w/o modification. I'm trying to find motors and pulleys that can be used w/o modifcation.

[-Elepro-]

- those motors in your links have right specification..... = good for our application

- the motors i suggest have right specification and more datasheet says "Ideal for High Speed Applications"..... = the best for our application

then options are not:

1. Buy a motor and pulley with incomaptible shaft sizes, and then we each have get spacers/collars fabricated on a Lathe or Mill.
2. Buy a motor and pulley with stock compatible shaft/hole sizes and move forward with the rest of the work.

but:

1) buy perfect motor and fit pulley with a small effort for the best results

2) buy compatible motor and pulley for easy building....