Carl <carl.blum@...> added the photo album
Cut-off Blades
: Two cut-off blades
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Re: Mistery Unimat 3 with interesting modifications
From: [email protected] [mailto:[email protected]] On Behalf Of Peter Brooks
Sent: 23 November 2024 18:51
To: phill005; [email protected]
Subject: Re: [Unimat] Mistery Unimat 3 with interesting modifications? When I changed over to DC motors I built the controller box with two PWM units (the transformer had two 24V DC outlets anyway), with the idea that I could power the lathe and mill at the same time (the mind boggles¡). ? For thread milling/grinding ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡?
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Re: Mistery Unimat 3 with interesting modifications
I had the standard U3 power feed attachment but didn¡¯t much like it¡
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When I changed over to DC motors I built the controller box with two PWM units (the transformer had two 24V DC outlets anyway), with the idea that I could power the lathe and mill at the same time (the mind boggles¡).
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So I¡¯ve been considering a direct drive to the leadscrew also. I¡¯m in no rush, plenty of other things to do first but I was thinking of a simple sliding carriage arrangement with a mechanical lever disconnect (as well as the off/on and direction on the controller of course).
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Just my tuppence / two cents :-)
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Re: Mistery Unimat 3 with interesting modifications
Many thanks Bill now a member.
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Phill
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Re: Mistery Unimat 3 with interesting modifications
Sent you an invite to your email address.
Bill in OKC?
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Saturday, November 23, 2024 at 11:49:18 AM CST, phill005 via groups.io <phill05@...> wrote:
Hello Bill, could you send me the details to join Mini-Mills group please.
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Phill
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Re: Mistery Unimat 3 with interesting modifications
Hello Bill, could you send me the details to join Mini-Mills group please.
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Phill
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Re: Mistery Unimat 3 with interesting modifications
Hello Julius,
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The gear box on this U3 is powered from the head spindle with a rubber belt and it has a disconnect on the end of the box you push it in to drive, pull out to stop, so you have full control with the hand wheel, what I have been looking at is fitting a DC direct drive inline to the gearbox drive shaft slung under the end cover it looks like it will fit.
I have two options I have another motor that has a geared end but the motor would be sticking out.
So still some thinking to do, would it be better to go as has been made on the lathe in MEW mag and take off the the U3 gearbox or go my way under the end cover??
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I'll get some images tomorrow so you can see what I mean.
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Phill? ?
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Re: Mistery Unimat 3 with interesting modifications
Look at the Mini-Mills group, which I own, and can send you an invite to join, if interested. They have a few things about add powerfeeds to mills, which can be applied with a little skull sweat to lathes. They tend to use a coupler that can disconnect the motor from the feed screw when needed for hand positioning. Ought to be some stuff like that in the 7x12 mini-lathe group. I don't think my mini-lathe group has much of that info, but it does have a bunch of modifications for 7x mini-lathes by Ralph Patterson. Some of that might be a good inspiration for you, even though 7x machines are much larger than the Unimats, even the U3.?
Bill in OKC
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Saturday, November 23, 2024 at 10:30:34 AM CST, Julius Henry Marx via groups.io <sawbona@...> wrote:
Hello:
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@Phill005
... have a Emco power feed ...
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Yes, so do I.
But it is rather a hassle to use.
Belts (o'rings actually) stretch too easily and slip, interrupting the cut.
Even if you use the right OEM spec. ie: 2-222/N674-70
... drawing up a way of fitting a DC motor ...
Are you looking at a servo motor like those used for turning the U3 to CNC duty?
Or something like a Johnson type RS-555/775/895 with gear reduction?
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It would have to be an arrangement allowing manual use of the carriage feed when not in use.
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Best,
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JHM
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Re: Mistery Unimat 3 with interesting modifications
Hello:
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@Phill005
... have a Emco power feed ...
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Yes, so do I.
But it is rather a hassle to use.
Belts (o'rings actually) stretch too easily and slip, interrupting the cut.
Even if you use the right OEM spec. ie: 2-222/N674-70
... drawing up a way of fitting a DC motor ...
Are you looking at a servo motor like those used for turning the U3 to CNC duty?
Or something like a Johnson type RS-555/775/895 with gear reduction?
?
It would have to be an arrangement allowing manual use of the carriage feed when not in use.
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Best,
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JHM
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Re: Saw blades for the Emco Unimat jig saw accessory
Saw blades for the Unimat fret saw are available in most big box stores such as Menards and Home Depot. ?Also known as coping saw blades.
Dick
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http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
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Re: Mistery Unimat 3 with interesting modifications
Hello Neil:
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... can't download them?
I received Clive's files but I checked and yours are perfectly accessible.
No problems.
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Thank you.
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Best,
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JHM
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Re: Mistery Unimat 3 with interesting modifications
Hello Clive:
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Sent!
Yes.
And received perfectly.
Thank you for that.
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Best,
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JHM
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Re: Mistery Unimat 3 with interesting modifications
Neil,? many thanks for the link to the mags, this is something I have been interested in doing for my U3 that i am restoring although I do have a Emco power feed on mine but you have to change the belt around to change direction so have been drawing up a way of fitting a DC motor to it to get left and right movement, and I also came across another article in one of the mags for fitting a camera to view the lathe whilst working it (eye sight getting as old as me now).
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Many thanks to all that found this information to help us very pleased.
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Phill?
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Re: Mistery Unimat 3 with interesting modifications
You can't download them?
Neil
Hi Clive,
I would also be very interested in a copy of these articles if that is possible please?
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Re: Mistery Unimat 3 with interesting modifications
Hi Clive,
I would also be very interested in a copy of these articles if that is possible please?
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John,
I understand your approach to tooling and that works for you and is great.
I on the other hand enjoy grinding tools and making cutters. Different strokes for different folks. The only cutters I buy are spiral flute end mills and taps& dies.
I also grind my own single flute cutters used for engraving.
Dick
--
http://www.homemadetools.net/forum/?OFF-SET-tailstock-center-65965#post105972
?SMALL TURRET TOOL POST PLANS?
?LARGE TURRET TOOL POST PLANS
?MINI-LATHE CARRIAGE LOCK PLANS
?SMALL QC TOOL POST PLANS?
?QUICK CHANGE LATHE TURRET
?MINI LATHE COMPOUND PIVOT MODIFICATION
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Re: Mistery Unimat 3 with interesting modifications
If I've done it right you should be able to download both mags here. If not, I'll have to try again!!
The link expires on Nov 29th.
Julius and John,?
You're welcome to the articles. The PDFs are of individual issues so rather than trying to screenshot the articles it's easier to send the whole issue - who knows; there might be some other articles of interest within the PDFs . . .?
Don't want to sound dense but how do I email individual group members . . . ???
Clive
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Re: Mistery Unimat 3 with interesting modifications
Hello:
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Best,
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JHM
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* why can't we be allowed to edit our posts?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
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Best,
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JHM
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* why can't we be allowed to edit our posts?
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Re: Mistery Unimat 3 with interesting modifications
Hello:
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> You're welcome to the articles.
> ... easier to send the whole issue ...
That would be wonderful 8^D !
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My address is sawbona@....
Thank you very much.
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Best,
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JHM
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Bill in OKC too
OldToolmaker
Alex