Newbie- Lathe help

[Col_BlastPack]

I have 16 years experience on CNC MILLS of all kinds. My problem is that my company just bought a brand new Emco HyperTurn lathe. Great machine, but my knowledge of lathes is basic. There are no other machinists here either. What I need right now is some metric copper tubing for the coolant lines, and "farrel's" (I think they're called) to go with it. Where can I get these?

-thanx

[youngjim]

Ferrules, I think. Try Mcmaster, they have all kinds of neat stuff.

Jim

[Karl_T]

If McMaster don't have it, try Small Parts Inc.

[Col_BlastPack]

I can't seem to find this thing, so I'm uploading a picture. It's the little brass piece at the end of the copper tube. the copper tube is the actual coolant line. the line is held in by a 10mm british straight pipe tap. The 8mm's on the calipers represents the OD of the brass fitting

[youngjim]

You sure that isn't generic 1/4" compression fittings? The only things I could find with BSP threads either had a B-nut like you'd find on a 37 degree AN fitting or two separate ferrules.

Jim

[Col_BlastPack]

Positive. The machine is actually manufactured in Austria; the whole machine is metric. Plus I measured the pipe fitting - M10 x 1.0 It is a compression tube fitting, and I have been able to find everything I need at McMaster (thanx) except the "ferrule" I need.
The copper tubing is measuring 6mm od exactly x 4mm id. The "ferrule" is a solid piece, it is used ( I think ) to seal to the inside of the tool holder, and at the pipe fitting, to prevent leaks, and also to keep the copper coolant line from moving. One end of the ferrule is inserted over the copper tube, to a short distance from the edge. Then, you push back in the direction you came, and it actually digs into the copper.

[youngjim]

If the fitting doesn't come with it as is common practice for inch-size fittings, would it be faster or cheaper to make a few of these, rather than chase them down? Your description of what they do is spot-on for how the inch-size ones work, so the metric ones should work the same.

For the inch-size tubes you slide the nut and ferrule on, then push the tube into whatever it goes into until it stops Then tighten up the nut and the ferrule, and it'll seal the whole works together. The ferrule ends up stuck into the tube a bit so it isn't easily re-usable, but it is simple and works well.

Jim

[Col_BlastPack]

Well like I said initially, my lathe experience is extrememly basic. And that's really only for manual lathes anyway. You are describing exactly how it works, but I couldn't make any because this is our only CNC lathe, and it is dedicated to a job. We only have enough equipment for this job, i.e. one dead stop collet, one spindle liner, just enough tool holders, etc. However, from what you are saying, if I buy the compression fittings, they should come with these "double-sided" ferrules?

[youngjim]

All the inch-size fittings like that which I've seen, have come with them, yes. It makes sense that metric ones would be the same, but I have no way of guaranteeing that. I mean, the fitting and the ferrule are useless apart, but I wouldn't put it past them to sell them separately!

The fitting in your picture, that came from your machine? What I'm running into is the fact that it has metric threads, but the ferrule it has is shaped like an inch-size one. Thing is, all the metric fittings I've found have a different shape.

Have a look at the PDF catalog here, about page 26. They have what appears to be a 10mm metric thread fitting for 6mm tube.

Jim

Also - Do I have it right that you got the fitting somewhere but not the ferrule, or is it that you don't have either yet?

[Col_BlastPack]

the whole get-up in the pic came right off the machine. I have both but the machine was set up by the manufacturer.

[youngjim]

I get it. You should be able to get those parts out of that catalog I linked, if I have it right that you need several more of them. Good luck!

Jim

[Col_BlastPack]

thanx for the help