Dickson tool post problem

[RobonthemoorParticipant @robonthemoor]

Myford 7 super lathe, dickson tool post, the cam bolt has slightly rounded & the spanner will not tighten the tool holder down correctly, how do I take it apart to change the bolt? Can I get parts.

[RobonthemoorParticipant @robonthemoor]

Rounded bolt head

[Michael GilliganParticipant @michaelgilligan61133]

Have a look at "Flank Drive"

… available as both Sockets and Ring Spanners.

MichaelG.

[magpieParticipant @magpie]

If the post is an RDG item, then you just push in the clamp and then pull out the cam pin. It may take a bit of jiggling around, and a firm grip on the cam pin whilst pulling but it should come out.

Cheers Derek.

[RobonthemoorParticipant @robonthemoor]

Derek this is a Dickson tool post is this the same?

rob.

[magpieParticipant @magpie]

Hi Rob. The one i am refering to is RDG item No.4453404. I don't know how to put a link on here, so maybe someone who does know will put one on, or just type in "RDG" on google then enter the above number in the search box. If that is the one just do as explained in my first post. Sorry but i don't know if spares are available.

Cheers Derek.

[JasonBModerator @jasonb]

Its the same on the genuine Dickson, hold in the clamp in and turn the cam while pulling on it, its quite firm so use the spanner to turn while you pull.

 

It should be hard for the hex to round over if you are using the correct bent spanner but I suppose it may be an imported copy that has not been hardened as well or used with an ill fitting spanner at some time.

Rotagrip do spares but not cheap, may be worth trying the guys that now make them and sell on e-bay, A & R Precision.

 

J

Edited By JasonB on 10/07/2013 08:01:38

[Neil GreenawayParticipant @neilgreenaway71611]

When I bought my dickson toolpost off ebay for my ML7 (genuine dickson item) there was no wrench included, however I used an M8 socket head cap screw and turned down the shank to remove the threads and welded on a small t-bar handle. works well for locking the holders in place.

[RobonthemoorParticipant @robonthemoor]

Thanks guys spot on, got it apart, the funny thing is, one hex head is half a mm smaller than the other across the flats? Thought I might try braising the hex bigger then filling or milling the hex back to the correct size, will this work or am I been a turnip?

Rob

[JasonBModerator @jasonb]

The parts are hardened so any heat introduced would affect this and you may end up with a softer hex than you started with and a sofeter cam which will wear faster

Edited By JasonB on 11/07/2013 12:47:18

[Lawrie Alush-JaggsParticipant @lawriealush-jaggs50843]

Thought of making a new one? I thought that was what we did………

[RobonthemoorParticipant @robonthemoor]

I'm a newbie lathe operator looks a bit technical.

Rob

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Michael Gilligan on 09/07/2013 21:40:02:

Have a look at "Flank Drive"

… available as both Sockets and Ring Spanners.

MichaelG.

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