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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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pdg |
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pdg World Chat Champion
Joined: 15 Sep 2012 Karma :
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Posted: 20:47 - 15 Nov 2014 Post subject: |
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Well, the motor works. I didn't think a picture was much good as it'll look exactly the same as the previous motor picture but with a slightly blurry pulley...
In other news, I managed to get nearly all the swarf/dirt/spiders/leaves out of the void in the bed casting and got an electrolysis bath set up that's slightly bigger than an ice-cream tub.
Filling up the tub (it's got what lathe beds crave, it's got electrolytes):
https://i.imgur.com/WjB8p11.jpg
Making bubbles of hydrogen:
https://i.imgur.com/sr4yRcY.jpg
Drawing about 3.5 amps at that point - as the sacrificial electrode gunks up that goes down, I'll clean them off when it drops under 2 I think.
Because of the amount of surface there is to clean I reckon this is going to be in there for a few days - it seems like a long time but I can just leave it to it's own devices in the main and get on with other things.
Still to do:
Lots.... ____________________ Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you. |
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pdg |
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pdg World Chat Champion
Joined: 15 Sep 2012 Karma :
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Posted: 23:02 - 16 Nov 2014 Post subject: |
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This morning, I had a look at how the bed was getting on. I had the bath powered for around 5 hours yesterday and then I turned it off for the night. So, after 5 hours electrified then about 9 hours or so just soaking I took it out and gave it a hose off:
https://i.imgur.com/i2W40EK.jpg
https://i.imgur.com/dK6uKdi.jpg
The old paint literally just washed off with the hose. I am now officially a fan of electrolysis.
I rearranged the electrodes and put the bed back in the bath the other way up and it's been in there for maybe another 4 hours powered - probably going to leave it overnight and get it out for a rinse and dry off in the morning before work. From my initial guess of 'a few days' it seems it's not going to need any more now.
In total, I reckon it could have been done in a day - and that would have meant less than an hour actually working on it, and the rest of the day just leaving it to get on with it. So very much easier than a wire brush.
While I was very very busy cleaning the bed ( ) I thought it was about time to get the cabinet out of the car at last...
I want to clean it all up inside and give the intermediate shaft and tensioning system a going over too, so I stripped it all out. This is the 'gearbox' that gives the 9 spindle speeds:
https://i.imgur.com/knJnZ5m.jpg
That all came out (better pics to follow) and the cabinet (with some help from a neighbour) found it's way around the back ready to be cleaned/prepped/painted and put where it's going. Then I can start getting it built back up as I complete parts. ____________________ Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you. |
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jowettdriver |
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jowettdriver Borekit Bruiser
Joined: 09 Sep 2008 Karma :
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Northern Monkey |
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Northern Monkey World Chat Champion
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sickpup |
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sickpup Old Timer
Joined: 21 Apr 2004 Karma :
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Tamsin |
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Tamsin World Chat Champion
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drbaig |
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drbaig Crazy Courier
Joined: 24 May 2012 Karma :
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Posted: 19:58 - 17 Nov 2014 Post subject: |
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I miss working on a lathe machine. 14 years of age playing in a mechanical engineering lab was a lot of fun. My school had twenty lathes, 3 shapers, and a few drill presses. It was great. ____________________ yzf 600r |
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Fisty |
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Fisty Super Spammer
Joined: 11 Apr 2007 Karma :
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pdg |
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pdg World Chat Champion
Joined: 15 Sep 2012 Karma :
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Posted: 01:45 - 18 Nov 2014 Post subject: |
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jowettdriver wrote: | Nice work so far.
My Dad and I have re-built a model M lathe built by Smart and Brown of a similar vintage. |
Thanks (to you and everyone else) - looks like you did a good job on yours. I've been in touch with Tony and I'm 'in' the yahoo group (even posted once).
On with the show...
The bed is almost ready for paint, there are a few casting imperfections that were originally filled before painting but I haven't decided whether to go the filling route or not yet. So I put it to one side and had a look at the headstock instead.
Firstly, the lid is aluminium while the main head housing is cast iron. There is a pair of hinge pins for the lid and as yet I have had no success at removing them to take the lid of the body. Ok, it's doesn't sound like an issue, but it means I might not be able to treat the head electrolytically, which is an arse. If I can't get the lid off I might actually have to scrub something..... (I have to do the cabinet 'manually' as well, but I'll get to that later sometime.)
I was in two minds about stripping the headstock down, but thought it really would be best to know exactly where I'm starting from and also that cleaning it up may well introduce contamination to the bearing - I'm quite glad now I did strip it.
https://i.imgur.com/f62pmkt.jpg
Even though it felt like it was turning nicely I found some bits that need attention after all. The oil port for the rear bearings was missing it's cap so water found it's way into there and had a bit of a play...
https://i.imgur.com/zHzjoEs.jpg
https://i.imgur.com/J3Y97k6.jpg
The retainer will clean up easily enough and with a damn good flushing the bearings (there are two identical units) will be 'good enough' to use for a while - there's a bit of discolouration to the balls but no pitting so it hasn't gone too far. While it's apart though I shall measure up so I can source replacements at some point.
The nose bearing is a tapered brass bush that is adjustable by means of threaded collars - one side pulls the bearing into the housing and 'tightens' it, then the other one locks it in place. While there is some marking internally it's nothing to worry about.
https://i.imgur.com/HEWcikC.jpg
All of the lubrication on this machine is supposed to be done with oil. A few of the ports look (and indeed are) exactly the same as grease nipples. Fortunately, nobody rammed grease in the ones in the head. As the oil is introduced to the nose port it flows into a small reservoir under the bearing and is then wicked up by felts that are fitted in a machined slot. The felts I pulled out are knackered so they will definitely need replacing before it goes back together.
https://i.imgur.com/R2oKLqM.jpg
As I said at some point, the 3 step pulley within the head runs on it's own bearings and drives the spindle through a key - this stops any 'belt pull' or vibration from reaching the part you are turning. The bearings in the pulley have their own oil port, which thankfully still had the nipple in place and was fairly well sealed. But as it needed cleaning up (and I wanted to check the bearings properly anyway) apart it came.
https://i.imgur.com/i5cQtdI.jpg
The inside of the pulley housing is nice and clean.
https://i.imgur.com/DqcVAHH.jpg
As is the captive shaft the pulley runs on.
https://i.imgur.com/znHQcvr.jpg
All in all, the whole head is in remarkably good (if a little dirty) shape. A good clean, new lubrication and it'll be good to go.
Just think, if I hadn't decided to get into it properly I could've had as little as 20 or 30 years left in those bearings........
One other bit for now - those oil ports that look like grease nipples... The ones for the intermediate shaft plain bearings had indeed been greased - instead of spinning freely as it should, the shaft is slow (albeit smooth). It was already on the list for strip/clean/lube/recommission anyway but it's just another excuse.
Still, grease instead of oil might make it little sluggish, but it's a hell of a lot better than no lubrication at all. ____________________ Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you. |
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alt tab Nitrous Nuisance
Joined: 01 Apr 2014 Karma :
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Posted: 01:47 - 18 Nov 2014 Post subject: |
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nice update pdg, very machine, much manly |
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Fisty |
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Fisty Super Spammer
Joined: 11 Apr 2007 Karma :
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_Iain_ |
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_Iain_ Banned
Joined: 01 Feb 2012 Karma :
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pdg |
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pdg World Chat Champion
Joined: 15 Sep 2012 Karma :
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Posted: 23:22 - 18 Nov 2014 Post subject: |
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Only a little update today, terribly sorry about that....
So, I decided not to fill all the casting marks. Once I start doing that I'll drive myself mental chasing scratches down. It's a tool, made to be used, not a show queen.
This evening I threw a bit of paint at it.
https://i.imgur.com/1DQANkM.jpg
The overall colour scheme is going to be black or plain/polished metal where appropriate on the external surfaces and white everywhere (except where it needs to be bare) inside. If you don't like it, paint your own
Yes, there's a little overbrush here and there - that'll get dealt with once it's dried. Even if I had masked it the paint I used creeps very well so I'd have to re-edge after taking the tape off anyway.
The reason I ended up finishing a bit early is I painted the bed in front of everything else, so I don't want to be trying to lift things over wet paint - planned that well..... ____________________ Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you. |
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Fisty |
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Fisty Super Spammer
Joined: 11 Apr 2007 Karma :
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Fisty |
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Fisty Super Spammer
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Posted: 23:27 - 18 Nov 2014 Post subject: |
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Thats biggest cunt of the year and I am upset you have polluted such a beautiful thread with such shit. ____________________ Quietly and consistently taking the piss.
TL1000R | Hayabusa | ZXR400 | TL1000S | Bandit 400 V
Fatter and faster than Fret |
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CaNsA |
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CaNsA Super Spammer
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331X2 |
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331X2 Crazy Courier
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smegballs |
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smegballs World Chat Champion
Joined: 28 Oct 2007 Karma :
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Posted: 02:04 - 19 Nov 2014 Post subject: |
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What did you do to it????
Why did you kill that delicious patina of age and use? The lovely transition between worn paint, undercoat and finally smooth bare iron as you can see all the points on the machine that get rubbed against by the operator.
Well done for saving a machine tool from the scrap heap by all accounts, but you have killed its character! |
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Pete. |
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Pete. Super Spammer
Joined: 22 Aug 2006 Karma :
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Posted: 20:21 - 19 Nov 2014 Post subject: |
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Stuff the character it's just a machine. It either works or it doesn't work. Cleaning and painting lets you get to know your machine and you'll find out all the little things that need attention whilst you're doing it. ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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Fisty |
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Fisty Super Spammer
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pdg |
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pdg World Chat Champion
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pdg |
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pdg World Chat Champion
Joined: 15 Sep 2012 Karma :
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Posted: 00:44 - 20 Nov 2014 Post subject: |
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Right, update of sorts.
I started getting the cabinet ready for paint, then it got dark and started raining - so I left it for now... With any luck, that will get done tomorrow at some point.
The bed got a third coat of paint, I think that's done now but I'll see how it dries. I don't think a photo of it will look any different at all, so just look a few posts up.
So, I had a bit of a look at the motor mount plate, belt tensioning system and (as much as it can be) the 'gearbox'.
https://i.imgur.com/MWZTiVv.jpg
That's about as far as I got with that bit, 'test cleaned' a little of the motor mount plate and it looks like it will clean up just fine and then get paint. There's no actual rust or damage so another easy piece of work there.
Hopefully, something more interesting and/or shiny after tomorrow evening. ____________________ Any and all advice given should not be followed - if you have to ask it means you don't know so get a man in to do it for you. |
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Kickstart |
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Kickstart The Oracle
Joined: 04 Feb 2002 Karma :
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Pete. |
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Pete. Super Spammer
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Posted: 22:37 - 20 Nov 2014 Post subject: |
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Raglan make (made) a pretty good lathe Keith. Think they were in Nottingham.
What you got - a Little John? ____________________ a.k.a 'Geri'
132.9mph off and walked away. Gear is good, gear is good, gear is very very good |
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Old Thread Alert!
The last post was made 9 years, 159 days ago. Instead of replying here, would creating a new thread be more useful? |
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