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View Full Version : Mounting tool holders directly on the Cross Slide



Boucher
02-08-2010, 04:14 PM
I have some new Sandvik 1 tool holders, which are a little large for my 12 lathe. The cutter height above the bottom surface is 1.063. The thought crossed my mind to drill a hole for the T-nut bolt put a 0.063 shim under it and attach directly to the cross slide. Seems like this would be more rigid than mounting in a Quick Change post.

Any thoughts would be appreciated.

MTNGUN
02-08-2010, 04:30 PM
Or you can mill the 1" shank down.

japcas
02-08-2010, 04:47 PM
Or cut a dovetail in them to fit a quick change aloris type holder if you have one of them.

Black_Moons
02-08-2010, 05:02 PM
haha at add dovetails to them, I like that idea.

Could be bolt on jobbies even! (nice if you don't have a dovetail cutter)

Still id recommending hiting them with a punch and seeing if you can dent em, if you can, you can likey mill them down to 5/8" or 1/2" easily enough.
If you can't dent em.. well, you can't machine dovetails in em either.. And drilling them to bolt on dovetails is not gonna be easy either. (Unable to dent/file them = hardened = pain in the ass to alter without grinding)

rustamd
02-08-2010, 05:16 PM
Here is what Frank Ford has done with big one'


http://adsl-76-247-117-65.dsl.pltn13.sbcglobal.net/HomeShopTech/Tooling/GiantToolHolder/giantholder.html

Evan
02-08-2010, 05:17 PM
I do it regularly. Although the South Bend 9 doesn't have tee slots the designers thoughtfully provided a pair of 5/16 x 18 threaded holes that are normally hidden by the top slide base. That makes it easy to bolt on items such as a table or other tool and work holding accessories. This is a somewhat extreme example of how the SB9 can be used because of that little extra.

Fly cutting the ends of the columns of my milling machine:

http://metalshopborealis.ca/pics/34face2.jpg

http://metalshopborealis.ca/pics/34face1.jpg

The Artful Bodger
02-08-2010, 05:41 PM
Byron, I expect you could do what you are suggesting but it might mean more tool overhang required to clear the corner of the 'cross slide'? On the other hand a 1" holder on a 12" lathe is likely quite rigid enough even with the overhang.

I am a little confused as I am thinking that your reference to 'cross slide' is actually a reference to the compound slide? If my understanding is correct the cross slide is fixed at 90 degrees across the machine whereas the compound can be moved for various angle cuts and when threading.

I have had a couple of 'oops' moments which have bent my tool holders and I counted myself fortunate that I was not using a heavier tool holder which might have resulted in damage elsewhere, just a thought.

If you do need to trim the tool holder I think you will find they are easy enough to machine as I have had to reduce the size of a couple of mine with no problems.

John

small.planes
02-08-2010, 05:48 PM
I bought a 25mm (1 inch ish) holder recently with a load of inserts.
I didnt even think about the size, just figured I had a shop full of metalworking tools to make it fit if I had to.
These are hardened, but not like a file, more to increase there working life.
Cut ok on my mill with a Nachi 8% Co coated HSS rougher endmill.

http://i306.photobucket.com/albums/nn274/small_planes/08022010123.jpg
http://i306.photobucket.com/albums/nn274/small_planes/08022010124.jpg
http://i306.photobucket.com/albums/nn274/small_planes/08022010125.jpg
http://i306.photobucket.com/albums/nn274/small_planes/08022010126.jpg

Dave

Spin Doctor
02-08-2010, 05:50 PM
Here is what Frank Ford has done with big one'


http://adsl-76-247-117-65.dsl.pltn13.sbcglobal.net/HomeShopTech/Tooling/GiantToolHolder/giantholder.html

Been there, done that

http://img.photobucket.com/albums/v19/markandannie/tool%20holders/MVC-003S.jpg

rustamd
02-08-2010, 05:53 PM
Been there, done that

http://img.photobucket.com/albums/v19/markandannie/tool%20holders/MVC-003S.jpg
Looks good, about to do that to 1" Shank CCMT toolholder I got

Carld
02-08-2010, 06:24 PM
On the early lathes, especially European, they clamped the cutter on top of the compound and shimmed it up as needed. In those days the blacksmith forged the tool to the machinists spec. for the job he was doing.

You could make two T nuts to fit the slot in the top of your compound and clamp across the top of the tool. It does work very well.

japcas
02-09-2010, 10:33 AM
[QUOTE=Black_Moons]haha at add dovetails to them, I like that idea.

Could be bolt on jobbies even! (nice if you don't have a dovetail cutter)QUOTE]

Those shanks are usually fairly hard but they're not too hard to machine. Check out the pics above.

Don Young
02-09-2010, 10:57 PM
Something built like a lantern toolpost can be made to clamp tools directly to the top of the crosslide or compound.