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Unimat tangential tool holder

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John Haine20/12/2017 17:49:12
2590 forum posts
133 photos

Having just acquired a Unimat 3 as I wanted a small lathe for quick jobs and especially ones needing high spindle speed, I'd like to make a tangential tool holder for it. Is anyone aware of a design specifically for the Unimat (or the C0) please, before I design my own?

Paul Lousick20/12/2017 21:15:27
1149 forum posts
492 photos

Hi John,

There have been lots of previous posts on MEW about tangential tool holders. Enter "tangential" into the Search for: option at the top of the page. You may have to scale down some of the designs to suit the Unimat.

Paul.

John Haine20/12/2017 21:36:13
2590 forum posts
133 photos

Thanks, yes. I do know that, and have done such a search without finding anything specific which is why I'm asking if anyone knows of a Unimat specific design.

Michael Gilligan20/12/2017 22:39:19
avatar
13780 forum posts
599 photos

John,

Sorry, I've seen nothing specific to any version of the Unimat, but ... 

Here is one designed for the Taig [a.k.a. Peatol] lathe, which might be a good start:

**LINK**

http://www.instructables.com/id/Tangential-Tool-Holder-for-Taig-Lathe/

MichaelG.

 

Edited By Michael Gilligan on 20/12/2017 22:42:00

John Haine20/12/2017 22:51:13
2590 forum posts
133 photos

Thanks Michael, that's a great find!

John Haine05/12/2018 18:33:26
2590 forum posts
133 photos

OK, well it's nearly a year since Michael pointed me to that design for the Taig, and having fitted the new collet spindle it was time to get the toolpost sorted. A 25mm cube of FC steel had this hiding inside it.

img_1344.jpg

Here's another view taken off the lathe with some turned bits of metal, sitting on the headstock.

img_1349.jpg

On the left is a bit of stainless, shank of a special bolt lying in the scrap box. Turns nicely to a good finish at ~ 1000 rpm. Next to it is 8 mm aluminium, turned down to 6 mm in one pass running about 800 rpm (I think).

img_1345.jpg

This is particularly what the lathe is for - turning small diameter silver steel for pivots, this at ~2000 rpm. The tool works beautifully. A set of cheap and nasty carbide tools came with the lathe, I did have a go with them but they were awful so I didn't have high expectations, but very pleased. An interesting exercise in angular milling with my very rarely used swivel and tilting vice.

More pics in the album.

Michael Gilligan05/12/2018 21:12:02
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13780 forum posts
599 photos

Splendid job, John yes

... looks to be very successful.

MichaelG.

John Haine05/12/2018 21:54:56
2590 forum posts
133 photos

Thanks Michael, quicker and easier than I expected, once I puzzled out the description of how to get the compound angles.

Brian Sweeting05/12/2018 22:31:47
365 forum posts
1 photos

Here is one from earlier with handrawn plans...

**LINK**

Michael Gilligan05/12/2018 22:45:38
avatar
13780 forum posts
599 photos
Posted by Brian Sweeting on 05/12/2018 22:31:47:

Here is one from earlier with handrawn plans...

**LINK**

.

But that would be somewhat oversized on John's lathe.

MichaelG.

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