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Author Topic: Lookin for info on building a multi-wheel polishing machine, please  (Read 1402 times)

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sealdaddy

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I am not needing it for grinding, just polishing, please.
I soon will be in a space to have and use one.
The project may be beyond what my very limited finances will allow, but
I'm thinking of a 6 wheel setup, capable of using 1 1/2" and 2 1/2" wheels.
I have a 1/2 HP general purpose motor with 1750 rpm.
Pillow block bearing sets will be needed, I think, but that's about all I know, so far.
Thank you~
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lithicbeads

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #1 on: April 05, 2015, 01:01:24 PM »

What type of wheels are you thinking about?
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sealdaddy

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #2 on: April 05, 2015, 01:10:29 PM »

What type of wheels are you thinking about?
I'm hoping for Nova wheels, plus the expando you gratiously bought me.
What would you suggest, friend?
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Itsandbits

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #3 on: April 05, 2015, 08:07:33 PM »

Princess Auto should be a good source for everything to put the wheels on except you'd have to get right and left threads cut on opposite ends of the shaft and nuts to fit and some brackets made to hold the bearings up high enough for wheel clearance.
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rocks and people have a lot in common; one persons "leaverite" is anothers treasure

sealdaddy

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #4 on: April 05, 2015, 08:17:56 PM »

I can get a machine shop to do that.
Do the bearings need to be pressed on the shaft (withban arbor press?)
Or are they free-floating on it?
If free-floating, how do you keep the shaft from moving laterally ?
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Itsandbits

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #5 on: April 05, 2015, 09:03:49 PM »

put a collar on outside of each bearing and it will keep it in place. I would leave my bearings free floating till I had all the spacers and wheels on and tight; then the bearings will be exactly where you want them. I'd also have them on slotted holes for future adjustment. I'd be tempted to use this type of bearing mounted on metal L brackets with a U shape cut in the top to drop the arbor in so I would have something to hang the hood on; I notice with these there is built in set screws to lock them in place. Maybe Ernie has a better idea
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rocks and people have a lot in common; one persons "leaverite" is anothers treasure

sealdaddy

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #6 on: April 05, 2015, 09:46:49 PM »

Hmmmm...good ideas.
I like the grease fitting on those  :coffee1:
Do I use sections of pvc pipe as spacers?  How does that work, friend?
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Minkos61

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #7 on: April 05, 2015, 11:15:24 PM »

put a collar on outside of each bearing and it will keep it in place. I would leave my bearings free floating till I had all the spacers and wheels on and tight; then the bearings will be exactly where you want them. I'd also have them on slotted holes for future adjustment. I'd be tempted to use this type of bearing mounted on metal L brackets with a U shape cut in the top to drop the arbor in so I would have something to hang the hood on; I notice with these there is built in set screws to lock them in place. Maybe Ernie has a better idea


There are pillow block bearings that have eccentric rings that lock the shaft with the bearing and then tighten set screws and done. They are the same bearings I used for my saw build and my grinder build. This is the grinder build pics.
 



Hope that helps Don ! I will be using pvc pipe for spacers, and they are suppose to work great !

Ernie
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Ernie

sealdaddy

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Re: Need info on building a multi-wheel polishing machine, please
« Reply #8 on: April 06, 2015, 05:06:23 AM »

Wow...That is a Sturdy setup~!!
Why 2 pulleys, Ernie?
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Minkos61

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Re: Lookin for info on building a multi-wheel polishing machine, please
« Reply #9 on: April 06, 2015, 06:43:28 PM »

For 2 different speed setup . The motor has 2 pulleys to, just different sizes . I was told by a wise man that it is a good thing to have for different stones. :icon_thumleft:
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Ernie

lithicbeads

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Re: Lookin for info on building a multi-wheel polishing machine, please
« Reply #10 on: April 06, 2015, 07:56:19 PM »

At first I was wondering if you were referring to muslin buffs as most people do not use the smaller diameter wheels because they seem to be more expensive  per unit area of diamond and their peripheral speed on a standard machine would be much slower and less agressive.
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