Dickson Tool Post . – can it be drilled ?

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Dickson Tool Post . – can it be drilled ?

This topic has 13 replies, 8 voices, and was last updated 20 January 2011 at 13:57 by John Coates.

Viewing 14 posts - 1 through 14 (of 14 total)

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10 January 2011 at 16:20 #62165
WALLACE
Participant
@wallace
Hi everyone.

I wan’t to mount a Dickson type parting off tool holder upside down so I can run the lathe backwards when parting off. I’m not sure of the make, but I iamgine it’s UK . . (not Chinese !).

So I need to drill and tap a new hole on the bottom to take the height adjustiong screw.

Any ideas if they’re through hardened and impossible to drill ? !

thanks.

W.
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10 January 2011 at 16:20 #29427
WALLACE
Participant
@wallace
10 January 2011 at 16:57 #62168
KWIL
Participant
@kwil
Has it got a “W” engraved in the clamping slot? Why do you want to run backwards? You will be trying to lift the carriage.
10 January 2011 at 18:45 #62171
JasonB
Moderator
@jasonb
Kwil, I’d be interested to know what the “W” is for as my original one has these marks but some of the holders I have subsequently bought don’t. I assume the “W” is a try Dickson and not an imported copy.

J
10 January 2011 at 18:54 #62172
KWIL
Participant
@kwil
Correct. Weston Engineering Some think it is an upside down M for Myford.
10 January 2011 at 19:04 #62173
JasonB
Moderator
@jasonb
Thanks Kwil

Well my imported holders are hardened (needed altering to get a good fit) so I assume the proper job will be as well. You may want to read the thread about chuck jaws to see how to unharden your holder.

J

Edited By JasonB on 10/01/2011 19:05:47
11 January 2011 at 19:52 #62250
WALLACE
Participant
@wallace
Hi Kwil.

I haven’t room on the lathe to put in a rear tool post – so was going to try mounting it upside down instead and run it in reverse (it has a LOO taper so won’t come loose).

I’m assuming the geometry to aid parting off would be the same – but will probably try it first before I mangle the holder !

W/
11 January 2011 at 21:22 #62259
Bill Pudney
Participant
@billpudney37759
On “upside down” parting off tools. I recently completed a QCTP set up for my Sieg C3. Amongst the changes I included a pair of upside down toolholders.

Despite all the prophets of doom they work extremely well. Where parting off used to generate considerable stress, it’s now a relarively calm procedure.

There are some photos in the Gallery, look for “QCTP”

cheers

Bill Pudney

Adelaide, Australia
12 January 2011 at 00:42 #62274
Chris Trice
Participant
@christrice43267
I remember seeing a QC rear tool post for parting off on Myford’s stand at Sandown.
12 January 2011 at 00:43 #62275
Chris Trice
Participant
@christrice43267
Here you go:

http://www.myford.com/meu/Tools/article_01-0014T.html

That’s assuming you have a Myford or it might be adaptable..
20 January 2011 at 08:57 #62837
Tony Jeffree
Participant
@tonyjeffree56510
Posted by WALLACE on 10/01/2011 16:20:49:

Hi everyone.

I wan’t to mount a Dickson type parting off tool holder upside down so I can run the lathe backwards when parting off. I’m not sure of the make, but I iamgine it’s UK . . (not Chinese !).

So I need to drill and tap a new hole on the bottom to take the height adjustiong screw.

Any ideas if they’re through hardened and impossible to drill ? !

thanks.

W.

What kind of spindle nose do you have? If it is screwed (e.g., Myford), then this is a very BAD idea. I hope I don’t need to explain why

Regards,

Tony

Edited By Tony Jeffree on 20/01/2011 08:58:51
20 January 2011 at 10:41 #62858
Terryd
Participant
@terryd72465
Posted by WALLACE on 11/01/2011 19:52:41:

Hi Kwil.

I haven’t room on the lathe to put in a rear tool post – so was going to try mounting it upside down instead and run it in reverse (it has a LOO taper so won’t come loose).

……………………..

W/

Hi Tony,

He answered this possible problem on the posting above

Regards

Terry
20 January 2011 at 11:55 #62863
Tony Jeffree
Participant
@tonyjeffree56510
Posted by Terryd on 20/01/2011 10:41:33:

Posted by WALLACE on 11/01/2011 19:52:41:

Hi Kwil.

I haven’t room on the lathe to put in a rear tool post – so was going to try mounting it upside down instead and run it in reverse (it has a LOO taper so won’t come loose).

……………………..

W/

Hi Tony,

He answered this possible problem on the posting above

Regards

Terry

Ah..ok…missed that!

Regards,

Tony
20 January 2011 at 13:57 #62875
John Coates
Participant
@johncoates48577
Posted by WALLACE on 10/01/2011 16:20:49:

Any ideas if they’re through hardened and impossible to drill ? !

I bought a Dickson type QCTP from Chronos and bored it out from 7/16ths to 1/2″. We (folks on here) figured out in the endit was case hardened

Here’s how I did it:

Boring Chronos QCTP
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