Myford m series

This topic has 11 replies, 8 voices, and was last updated 31 December 2021 at 14:52 by Nicholas Farr.

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17 September 2021 at 00:16 #563095
Bill 🇬🇧
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@bill91777
hi all

as this is my first ever post! I'm a bit unsure of how this all works?

lm a retired watchmaker & I've only ever used small watchmakers lathes but I've recently purchased a 1947 myford m series lathe I've almost finished rebuilding it but it seem the end of the lead-screw gear wheel is missing, dose anyone have a picture of the gear that fits on the end of the lead screw that meshes with the gear train, as I may have one in the boxes of spairs that came with the lathe? Just don't know what I'm looking for, thanks in advance of any help received

bill
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17 September 2021 at 00:16 #28350
Bill 🇬🇧
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@bill91777
Leadscrew gears
17 September 2021 at 07:31 #563108
Michael Gilligan
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@michaelgilligan61133
Good morning, Bill … and welcome

If I understand your question correctly : the “end of the lead-screw gear wheel” is chosen from the set, according to what thread-pitch or feed-rate you need. … It is typically one of the larger tooth-counts.

Lots of photos here: **LINK** http://www.lathes.co.uk/myford/

MichaelG.

.

Edit: __ also a useful generic page here:

http://www.lathes.co.uk/latheparts/page6.html

Edited By Michael Gilligan on 17/09/2021 07:50:53
17 September 2021 at 07:47 #563110
Howard Lewis
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@howardlewis46836
Firstly, Welcome to the Forum.

Don't be afraid to ask about anything. VAST amounts of experience on here, should you need it. And you can help mothers if they have a problem, to whichr you know the answer.

If the M is like the early MLs, (1,2,3 and 4 ) the gears are driven from the mandrel, and on to the Leadscew by Driving Collars.

This just a collar with a grubscrew to secure it to the mandrel, or Leadscrew, with a 3/32" hole part way through to take the pin that drives the gear.

From memory, the grubscrew is 1/4 BSF

If you have to use a compound gear, the two are coupled by a 3/32" pin in the same way

So, IF this is the same arrangement as the ML4, you should have two Driving bCollars, and ideally four pins.

Four because two will be needed for the Driving Collars and the other two in case you need to have two compound gears in the train.

If you have not got the two Driving Collars, you can easily make them. They are only a simple turning job, the same thickness as a gear, probably 5/8" bore with the 1/4 BSF tapping and the 3/32 hole, drilled half way through..

HTH

Howard.
17 September 2021 at 09:36 #563128
David George 1
Participant
@davidgeorge1
Hi William welcome to the forum.. I have an M Type and have loads of information on these and you can have a look in my albums for info or drop me a message. Here is a picture of the leadscrew drive.

It uses a regular gear with pi and hole with a collar that has a hex head bolt that clamps into the slot milled into the stub shaft. If you are only having a single gear on this shaft there is a collar to adjust position.

David
17 September 2021 at 21:31 #563240
Bazyle
Participant
@bazyle
William has a picture in his album. I think he is missing the 2nd half of the dog clutch.
17 September 2021 at 21:48 #563244
David George 1
Participant
@davidgeorge1
I think this is the missing part.

David
18 September 2021 at 08:06 #563278
Ady1
Participant
@ady1
I'v put some photies of the clutch here
31 December 2021 at 10:31 #577692
Ian Mellin
Participant
@ianmellin57436
Hello,

I am new to this Forum, I have just purchased an old M Series Myford lathe. Does anyone have any documentation they could share on the machine, I.E user manuals, Maintenance manuals etc. I aim to strip and rebuild the machine, replacing any worn bearings etc. I believe the old machines are far better built than the new stuff on the market.

I have rebuilt other machines in my workshop such as a wadkin plainer thicknesser. If read the manual the engineering brain kicks in.

Kind Regards

Ian.
31 December 2021 at 13:59 #577737
David George 1
Participant
@davidgeorge1
Hi Ian welcome to the forum. You should start a new post as it will get you more hits rather than taking it on yo an old thread. I hsve an M Type lathe as well and have quite a lot of information about it and recommend that you have a look at these sites.

https://m.facebook.com/groups/703113663087249/?ref=bookmarks

https://groups.io/g/drummondlathe/topics

There is a handbook although very limited on there but it gives you what parts should do and look like on there and there are lots of drawings of replacement parts and mods that you can do.

I have moded my lathe to fit spindle roller thrust bearings, spindle oil lube drip, a tumbler reverse, and handwheel mod to give finer feed and corect direction as well as fitting a front saddle lock and quick change toolpost.

You can drop me a message if you need any further info.

David

Edited By David George 1 on 31/12/2021 14:08:57
31 December 2021 at 14:10 #577740
Ady1
Participant
@ady1
Even though they supplied the military, REME, Submarines, Destroyers etc I've never seen a sniff of a proper technical manual produced by/for Drummonds

Just a few advert leaflet books

South Bend produced huge amounts of stuff
31 December 2021 at 14:52 #577749
Nicholas Farr
Participant
@nicholasfarr14254
Hi Ian, you can use the Drummond 3-1/2" manuals here Drummond as they are the same machine.

Regards Nick.
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