Tree spindle question

[Tony Montana]

Hello folks,

I'm in the market for a used US made manual mill and have heard great things about Tree mills. Currently I'm looking at a couple of 2UVR mills. One has the double taper Tree style collet holder. The other one doesn't appear to have this holder (it might just be missing the collet nut, but it's hard to tell from the photos) and the owner isn't a machinist nor does he have any info on the mill. The mills are not anywhere near where I live so I'll have to commit without inspecting them beforehand.

Finally getting to my question...did all 2UVR mills use the Tree style collets? And, if this mill doesn't have the holder and/or nut are these readily available?

Thanks for the info!

[todd_351]

http://www.3sincorporated.com/index.htm

These guys would probably have a collet nut for a 2UVR. If not, I have an old one that I would sell you.

As far as I know all 2UVRs are Z collets (the double angle collet that you are talking about). I have been using my 2UVR for 5 years and I like the collets. They are easier to change than a R8 collet and they hold long, double end mills because they don't have a drawbar like an R8. The only problem is that the collets are hard to find. Mine are pretty worn out and are starting to get stuck in the spindle. I'm considering having my spindle machined to accept ER collets, which are similar but easy to buy new out of any machine tool catalog and also hold a wider range of sizes.

[Tony Montana]

Hey Todd, thanks for the info. I'm watching a couple of 2UVRs and hopefully I'll be bringing one home soon. I'll keep you in mind if the collet nut is in fact missing.

[Stinson_Voyager]

The Type Z collets are out there but the popular sizes are indeed hard to find.
1/4" 3/8" 1/2"... they're tough but everything else is easy, on the other had they can get expensive.

But here's the great thing... you can MAKE THEM! ahahahh try making an R8! well, you wouldnt have to since they're a dime a dozen....

but anyway. making a type Z is easy... Here's a pic when I made my first one:


on the left is a 1/8" that I got with the machine, on the right is a 1/2" that I made. Ordinary cold-rolled steel. works perfect.

[cullen]

what about an endmill holder? which one will work? i need to use a 1 3/4" roughing bit in my tree mill.
the biggest collet i have is 3/4" and i cant find a 1 3/4" roughing bit with a 3/4" shank

[Stinson_Voyager]

Find a smaller roughing bit I guess... 3/4" is the biggest shank that will fit in the 2UVR as far as I know.

[Adobe Machine]

Stenson Voyager is correct, even the 200 Tradesman only will chuck a a 3/4" shank..I have turned the shank down in my lathe to accomodate, even a couple of R8's I had on hand. They work fine,the Tree spindle is tuff, to say the least..

Adobe (old as dirt)

[Tony Montana]

More great info guys, thanks!

My new-to-me 2UVR is sitting in my pickup waiting for the forklift guy to show up.

I can't wait to get it up and running!

[Stinson_Voyager]

Sweet! Send us pics.

Here's a link to mine:
http://www.stinsonvoyager.com/Tree%20Mill.htm

[Tony Montana]

I'll post some once it's in the shop. And perhaps after I do some clean up, repainting, etc. It's of similar vintage to yours, but no where near as nice condition as yours! It came from GM's Saginaw plant, steering division and was rescraped in 1979. I'm guessing it sat mostly since then.

[Tony Montana]

I'm finally making some progess! I posted some pics on myspace. Here's a link:

http://viewmorepics.myspace.com/inde...lbumId=1104056

[Stinson_Voyager]

Pretty!