QD Chuck for Mini Lathe

QD Chuck for Mini Lathe

This topic has 10 replies, 6 voices, and was last updated 20 February 2012 at 20:57 by VC.

Viewing 11 posts - 1 through 11 (of 11 total)

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19 February 2012 at 14:16 #85241
VC
Participant
@vc44480
Hi all

This is hardly a question more like an answer to the problem of those pain in the butt 6mm nuts that hold the chucks on the little(yellow) lathes.

The helicoils are not the best of fits but with a little loctite they have lasted for a few years now.

Have not seen this done before

Hope that gets me a noddy badge or free subscription
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19 February 2012 at 14:16 #5967
VC
Participant
@vc44480
19 February 2012 at 17:03 #85254
Bernard Laycock 1
Participant
@bernardlaycock1
I may be thick, but I don't understand what you've done. In the photos, I can't see that anything has changed. Could you help with a bit more detail?

Bernard
19 February 2012 at 18:49 #85259
blowlamp
Participant
@blowlamp
Graham.

I'm glad you can make it out, 'cos I've a list of adverts running straight through the text (yours included).

Martin.
19 February 2012 at 18:52 #85260
Gone Away
Participant
@goneaway
I assume he's replaced the usual stud/nut arrangement on these chucks by drilling through to the front of the chuck, counterboring on that side and using a SHCS from that side.

Presumably the helicoils are used in the spindle flange holes (the picture isn't that clear).
19 February 2012 at 19:06 #85262
JasonB
Moderator
@jasonb
Its likely to be a front mount chuck so no drilling required.

Just tap the flange for the helicoils and fit same
19 February 2012 at 19:16 #85263
VC
Participant
@vc44480
Hi All

I did not explain that very well sorry..First prize must go to Mr Graham Meek.

Thats what I did

Thanks Graham
19 February 2012 at 20:34 #85274
Sub Mandrel
Participant
@submandrel
Alternatively – do the roller bearing modification, and get an extra 5mmm of space behind the mounting flange.

Simples!

Neil
19 February 2012 at 22:41 #85287
Bernard Laycock 1
Participant
@bernardlaycock1
My machine has been fitted with tapered bearings and fitting the nuts is much easier. Don't the roller bearings make a fantastic difference to the performance.

Bernard
20 February 2012 at 19:39 #85352
Sub Mandrel
Participant
@submandrel
I'm very happy with the roller bearings, although it seems mine was happier than most with the ball bearings.

Neil
20 February 2012 at 20:57 #85363
VC
Participant
@vc44480
Hi glad to hear that there are happy chaps with the roller bearing mod…

Did a timed test to-day 40 seconds 3 jaw off and four jaw on.

Thats what I was going on about

VC
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