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ELLIOTT 10M SHAPING MACHINE

LOST VERTICAL FEED SCREW .

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MARK RIGG03/08/2021 09:58:46
21 forum posts

Hello .

HELP WANTED !

I am reassembling my 10 M shaper and I have lost the vertical feed screw for the cross slide / table.

It now looks like that I will have to make a replacement - Does anyone have one of these machines in bits for restoration that could give me a few measurements .

The thread looks like 3/4`` dia. x 5 tpi LEFT HAND `ACME` . It should also be possible to determine the basic dimensions of the screw in situe .

Any help here would be much appreciated

MARK RIGG

BRIDGNORTH - SHROPSHIRE

bernard towers03/08/2021 12:55:26
275 forum posts
82 photos

Mark , My 10M is a late machine 1976!! so it is metric but still uses imp screws. The vert screw is 11/16 dia x 8 tpi. The dials are marked 3.2 mm per rev which proves the 8 tpi. Hope this is of help.

DMB03/08/2021 14:28:57
1154 forum posts
1 photos

Bernard, how can your machine be classed as metric with Imperial leadscrews? Sounds to me like a ballsup. If it was mine, I would change the dials to 125 divs to make for much easier working. I don't mind working in either system but not what I call half and half. Are the dials OEM? Surely not. No offence intended, just opinion on how to make life easier. John

bernard towers03/08/2021 17:20:26
275 forum posts
82 photos

Sorry but don’t have a problem I can add up and take away as I am over three score years and ten!!

Baz03/08/2021 17:31:51
558 forum posts
2 photos

3.2mm is near enough for 1/8 inch on a shaper, it’s only a full thou more per rev. You don’t usually work to Atom splitting limits when shaping, those limits are usually achieved on the Myford👍

DMB03/08/2021 17:32:07
1154 forum posts
1 photos

Age - Snap!

Edited By DMB on 03/08/2021 17:33:26

MARK RIGG03/08/2021 19:27:49
21 forum posts

Hello again . First of all , how do you determine if the 10 M is a metric machine ? I can`t find any serial number on my machine , nor any manufacturers plate with a serial number .

Also , I have looked at both the cross slide screw and the vertical screw shaft and both dials have 50 graduations .

The cross slide screw is 11/ 16 `` diameter and 5 tpi . So , if both graduation dials are the same , can we assume that the vertical feed shaft is also 11 / 16 `` diameter and 5 tpi .? The vertical feed nut ( cut inside the skew gear ) will not screw onto the cross slide screw as I think it is a different hand thread ( L H ? ) . The cross slide screw looks to be a square thread, not an ACME as I first thought .

If anyone can run a rule over their vertical shaft and give me some lengths overall and the length threaded portion . The lower portion is plain . That would be very helpful.

I would be interested in any further information and comments .

Thanks again for your interest .......................

MARK RIGG

Robert Butler03/08/2021 19:50:02
284 forum posts
6 photos

The metric Myford S7 has an imperial leadscrew the handwheel is graduated in metric units, The gearbox if fitted is imperial with banjo and a set of gears to convert to metric pitch. The tailstock, cross slide and top slide have metric pitch feed screws and with metric dials.

If the shaper is fitted with imperial screws but the micrometers calibrated to reflect metric measure whilst not ideal it is workable as no doubt many metric Myford owners have found. It is what it is.

Robert Butler

 

Edited By Robert Butler on 03/08/2021 19:50:28

not done it yet03/08/2021 22:58:06
6279 forum posts
20 photos
Posted by Robert Butler on 03/08/2021 19:50:02:

The metric Myford S7 has an imperial leadscrew the handwheel is graduated in metric units, The gearbox if fitted is imperial with banjo and a set of gears to convert to metric pitch. The tailstock, cross slide and top slide have metric pitch feed screws and with metric dials.

If the shaper is fitted with imperial screws but the micrometers calibrated to reflect metric measure whilst not ideal it is workable as no doubt many metric Myford owners have found. It is what it is.

Robert Butler

Edited By Robert Butler on 03/08/2021 19:50:28

My Raglan is the same. Imperial lead screw - metric threads are sorted by change wheels - and feed screws (cross and compound slides) and dials are metric or imperial as required. My lathe is imperial but will soon be metric.

Doesn’t make a lot of difference as I’ve already got DROs for long and cross travel indication, the compound mostly only gets altered for facing. Long travel does not use the lead screw as there is a separate power feed shaft.

But maybe I should change the imperial trip, for a metric thread, although I’ve never really bothered to count the turns when adjusting it….

Brian Wood04/08/2021 10:33:47
2438 forum posts
37 photos

Hello Mark,

The machine serial number is stamped onto the nose of the ram that holds the tooling slide

My 10M is an imperial machine with 8 tpi right hand feedscrews. They are probably of ACME form. The vertical screw dims are

17.5 mm [11/16 inch] on the threaded section. The shaft is 15 inches long from the tray to the top of the screw. The bottom of the shaft is 22.3 mm diameter where it enters the bottom bearing housing. That is bolted up from under the swarf tray. The shaft diameter reduces to 17.5 mm diameter at 125 mm from the tray and remains plain for about 30 mm before the screw thread starts

I am intrigued as to how you have lost the feedscrew! To remove it from the machine requires some effort, not least grovelling on your knees to remove the bottom bearing bolts. Try looking again for it in some unlikely position.

Regards

Brian

Brian Wood05/08/2021 08:49:00
2438 forum posts
37 photos

Hello again Mark,

I gave you erroneous information I'm afraid, my feed screws are LEFT hand, not right hand as I stated earlier. Sorry about that but how the change of thread direction helps you much in finding the one you have lost I don't know.

Regards

Brian

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