Member postings for Andrew F in Australia

Thanks Brian,

I wasn't but have joined.

The back gearing post is excellent.

A

Hi all,

Bit of digging found these -

https://emco.or.at/index.php/download/emco-bedienungs-und-serviceanleitungen/drehmaschinen/45-emco-unimat-3-en/file

http://www.vapeuretmodelesavapeur.com/telechargements/emco-unimat-3-vue-des-composants.pdf

https://archive.org/details/american-edelstaal-22637

Most emco manuals here -> https://emco.or.at/index.php/download/emco-bedienungs-und-serviceanleitungen/drehmaschinen

Might help.
(If you're a non-member, please join the forum and contribute.)

A

Edited By Andrew F in Australia on 29/12/2022 19:44:37

Hi admin,

Have a link farm of ~15 suppliers gathered off the internet for EMCO unimat spares.

Is it acceptable to post?

If so, please put this link up and reply to confirm it's OK.
If not, please delete and let me know.

With best regards,

A

Thanks DC3ik, Am going to look it up.

Really appreciate the time you spent on this.

Regards,

A

Thanks John.

Yep Jason. My error. I've got a heavily (axially) loaded shaft. Trapezoidal will be better as you say, it's metric standard. I thought of this after posting, and was just mulling over the design as you replied. 1mm minor diameter is lunacy.

Biggest issue is going to be grinding the internal thread cutter for a small dia internal thread to match the external thread, then cutting it. A square acme thread was my call there as 90° is easier to grind. Ease of use vs ease of manufacture.

Still finalising design issues on this one.

My biggest concern is that I've got to make this in spare time for delivery in 3 weeks, with the lathe arriving 3 Jan. It'll be tight.

You've all given confidence that I can use the electronic feed to cut this, having not seen the machine yet. Thanks.

Will post results.

Edited By Andrew F in Australia on 28/12/2022 10:37:39

Thanks Martin. The dies and tap are expensive (acme M3 x 1 or standard M3 x 1) but it's in the back pocket as a last resort. I was using tailstocks in 4' lathes to cut threads with a die in the early 80's.

Might have the wrong machine here and may need to bite the bullet on a CNC or back geared lathe.

If I read correctly, are you saying that your friend cuts simple threads with a tap/die and outsources complicated ones to a machine shop?

A

Regards,

A

Thanks Jason. It's got an electronic lead screw, so was thinking of having a go at it that way too. (Great minds or fools....)

I'll look into the geared designs, hadn't thought about that.

I'm thinking the cheapest option is a tiny 'optimum type lathe second hand with back gearing, but space is a challenge.

Was thinking about cutting the LH thread with the feedscrew in reverse. Need to have a close look at the machine first.

Appreciate the time you took and the reply, as well as any other advice you or others may have.

A

Couldn't edit the above with apologies.

Did a thorough forum search before posting.

Came across nielsworkshop and penny-farthing.co.uk.

Any others?

A

Hi all,

I just bought an Emco Unimat 3 to turn up some parts I need for a restoration - have to do this a couple of times a year.

I need to make fine aand coarse thread in both LH and RH on 3mm shafts.

Looking through the manual, this machine doesn't have the threading guide that's needed. Rather than go looking for a second-hand geared machine (workshop space)

Is there a source for second-hand bits and pieces for this lathe? At the moment, I'm looking for a threading kit in metric (preferably) as well as a dividing head.

Regards,

A

Hi,

Sorry - new member with a question reviving an old thread.

Are these two indexing heads interchangeable on a unimat 3?

The machine I just bought is one of the 'newer' Unimat3 machines - Just enquiring in case I find one of the older indexing heads in my travels.

Thanks in advance.

A