chuck onto rotary table.

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chuck onto rotary table.

This topic has 12 replies, 9 voices, and was last updated 19 February 2012 at 20:18 by capnahab.

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16 February 2012 at 21:25 #5962
capnahab
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@capnahab
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16 February 2012 at 21:25 #84979
capnahab
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@capnahab
Good Evening gents.

I would like to attach a standard 3 jaw myford chuck to a rotary table.

Here is the rotary table

with the screw removed

I know I need some sort of adapter , – but which ?.
16 February 2012 at 21:52 #84983
Deltic007
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@deltic007
Hi,

Why not have a go at designing your own.Should be fairly straight forward.

Mike
16 February 2012 at 22:06 #84984
Gone Away
Participant
@goneaway
The usual culprits – Chronos, RDG, Arc-Euro (?) have a Myford chuck adaptor for rotary tables that have an MT2 centre. Possibly you could modify one of those. It has the hard part done with the nose and thread.
16 February 2012 at 22:11 #84985
Harold Hall 1
Participant
@haroldhall1
As the Myford has a screwed nose, one method is to make an adapter that replicates this. The advantage of this is that it easily maintains concentricity between lathe and rotary table. However, if for example an hexagon for a spanner is being machined on the outer diameter the rotation of the cutter will be attempting to unscrew the chuck from the adapter. The result can easily be a spoilt workpiece and or a broken cutter.

The alternative is a plate mounted on the rear of the chuck using the chucks back plate fixings. Of course, concentricity between lathe and rotary table becomes much more difficult to achieve.

Have a look at , Photographs 14 and 15 on these pages.

Just in case that does not work, here– http://www.homews.co.uk/page70.html

Harold
16 February 2012 at 22:19 #84986
Bazyle
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@bazyle
oops, beaten to it.

Edited By Bazyle on 16/02/2012 22:21:28
17 February 2012 at 00:43 #84998
Gone Away
Participant
@goneaway
Posted by Harold Hall 1 on 16/02/2012 22:11:31:

The alternative is a plate mounted on the rear of the chuck using the chucks back plate fixings. Of course, concentricity between lathe and rotary table becomes much more difficult to achieve.

Harold,

Looks interesting. I looked at my (Myford) chuck. The only way I can see of fixing the plate to the chuck is to use longer versions of the existing screws that mount the chuck backplate (from the front). Might be a bit of a pain swapping the screws each time the chuck is moved from the machine to the rotary table or vice-versa …. though perhaps no worse than any other form of hard mount.

Problematic for me though, in Canada. The chuck screws are undoubtedly BSW and unobtainable here.

I don't see why the plate couldn't have a turned section on either side – one to locate the chuck, the other to locate in the table. It could either be machined from solid or fabricated from bits and then turned. To get the concentricity I mean.

Edited By Sid Herbage on 17/02/2012 00:47:40
17 February 2012 at 08:49 #85004
S Deakin
Participant
@sdeakin73134
If you can send for the Myford nose adaptor blank from myford.co.uk all you need to do is mount that adaptor between centre (nose thread's pointing towards each other) and turn a spigot to fit table centre bore, then a groove say 5mm wide by 5mm deep. Make a couple of clamps or use a couple of faceplate clamps located in the groove and bolted down in the rotary table tee slots. Clock adaptor up under milling spindle to be true. Screw lathe chuck on, job done.
17 February 2012 at 09:08 #85005
Clive Hartland
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@clivehartland94829
RDG do a Myford chuck adaptor to a rotary table, uses clamps in the slots and the chuck screws onto it.

Clive
17 February 2012 at 10:35 #85017
NJH
Participant
@njh
My rotary table has a N0.2 MT hole at the centre and I have a No2 MT – Myford nose piece adaptor, (available from Myford/RDG . ) I bought this years ago but have never used it! I bought a large chuck just a bit smaller than my rotary table, made a backplate with holes to fit the "T" slots, and find that suits just fine for all occasions I have encountered so far!

Norman
17 February 2012 at 12:17 #85040
JasonB
Moderator
@jasonb
As your Rotary table does not have a MT socket I would go for the method John (bogstandard) links to as this will allow you to mount the check without having to remove the work if it has been previously turned thus keeping things concentric.

Its also more ridgid than the MT adaptors particularly when working on large dia work as the chuck is supported over a wider area.

J
17 February 2012 at 12:41 #85042
NJH
Participant
@njh
Hey Jason

Thanks – I really should have looked more carefully at the other posts. Ah well miserable day here – drop off in posting – might as well go back to bed!

"capnahab" – as far as my post goes – do as my wife does and ignore me.

Cheers

Norman
19 February 2012 at 20:18 #85270
capnahab
Participant
@capnahab
Cheers Guys for all the helpful suggestions.

I am reasonably please with an adapter from RDG. Have machined a register in the bottom. (KIS).

can clamp it with T studs. Its mainly for the drill press.

cheers
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