Messages

351

General Mach Discussion / Re: BT30 spindle from scratch - with power drawbar and ATC of course

« on: October 06, 2012, 06:16:53 AM »

I'm another one of those on the sidelines, but I'm thinking, he knows what he's doing and appears to of covered all the details/problems I can think of, so not much point contributing!

352

Show"N"Tell ( Your Machines) / Re: Chiron FZ12 on its way sometime soon(ish)

« on: October 04, 2012, 05:15:36 PM »

I managed to figure out two of the F's, but the third one was eluding me!

353

Show"N"Tell ( Your Machines) / Re: Chiron FZ12 on its way sometime soon(ish)

« on: October 04, 2012, 04:52:52 PM »

Bad day when one can`t slag a SAFFCB without someone blabbing it all over the forum.

Also interesting how a done deal on a mill has now changed to "potential".Have the Welsh moved up to East Lothian?

I'm going to keep quiet in future, as I'm now trying to figure out the FFF bit...

It is done, I'm just (trying to) keeping a low profile until I have it in my possesion!

354

Show"N"Tell ( Your Machines) / Re: Chiron FZ12 on its way sometime soon(ish)

« on: October 04, 2012, 01:20:37 PM »

Strange thing happened this week. I was looking at a potential mill purchase, and the seller showed me a chiron he'd sold, and said he was just waiting for some boneidol idiot to collect it 


BTW, US digital have changed their international shipping to flat rates via UPS. You can see them at http://usdigital.com/company/ordering/shipping. Cost to UK varies from $46.68 to $61.51 depending on service, which is a lot cheaper than the last time I looked.

355

Show"N"Tell ( Your Machines) / Re: A few of my projects..

« on: September 26, 2012, 09:21:28 AM »

Looks like the server is very hit or miss.
I managed to see the pics (and saved the lathe ones for my reference!).

What linear guides are those you're using the lathe?
I'm considering converting an almost identical lathe in a similar way, and was looking at using more common Hiwin rails, however due to their height it means the carriage wouldn't then fit under the chuck. I doubt that would be an issue though, as I can't see me doing anything 6" diameter where I'd need to have the carriage under the workpeice.
I was also thinking about mounting the z-axis screw inbetween the rails.

356

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 14, 2012, 06:15:12 AM »

Does your's have flats on the spindle?

Mine doesn't, and I was under the impression any flats would of been on the original pulley block/back gear.

357

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 07, 2012, 05:45:09 PM »

How is your ball screw supported at the tail stock end?
Mine is machined and simply sits/runs in what would be the hole for the original leadscrew. It doesn't look as though it's secured in anyway, but I guess I could drill/tap it and come up with some method of adding a thrust bearing to hold the entire screw under tension...

358

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 07, 2012, 03:46:45 PM »

Cheers.
Sounds just like mine, but I never went any further than taking the ballscrew cover of the Z-axis. From what I remember, mine never looked like it had any substantial bearings anywhere, so I guess they never changed that part of the design.
I'm weighing up a couple upgrade options, and it looks like modifying or replacing the ballscrews needs factored into the options.

359

Show"N"Tell ( Your Machines) / Re: Conect 121 lathe retro

« on: September 07, 2012, 02:59:44 PM »

Hood, as somebody who's removed the steppers, how were the ballscrews attached to them on yours?

360

Show"N"Tell ( Your Machines) / Re: Denford ORAC lathe retrofit.

« on: August 21, 2012, 04:59:52 PM »

Looks good. The electronics on runners is a nice touch.

Must have some Scottish blood in me, eh Hood?
...
I added 4 brass tipped screws

You've got a lot to learn. You could acheive the same thing with 3 screws and saved some brass and a screw