Multifix Retracting Toolholder.

This topic has 35 replies, 13 voices, and was last updated 24 May 2017 at 18:25 by Joseph Noci 1.

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27 January 2015 at 21:41 #177533
Swarf, Mostly!
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@swarfmostly
Hi,

Please forgive me for posting off-topic.

I have seen lots of pictures of this type of tool-post but they always have the tool-holder mounted. I've never had the opportunity to examine one, 'in the flesh', so I still don't understand how the tool-holder is attached to the tool-post.

Please could someone lighten my darkness?

The vertical corrugations on the front of the tool-post are reminiscent of a 1930s sea-side lido cafe's windows – are they decorative or functional?

Best regards,

Swarf, Mostly!
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27 January 2015 at 21:54 #177535
Michael Gilligan
Participant
@michaelgilligan61133
Posted by Swarf, Mostly! on 27/01/2015 21:41:10:

The vertical corrugations on the front of the tool-post are reminiscent of a 1930s sea-side lido cafe's windows – are they decorative or functional?

Best regards,

Swarf, Mostly!

.

What a delightful image !!

But: Here is the truth

MichaelG.

.

Edit: and here, a YouTube video.

Edited By Michael Gilligan on 27/01/2015 21:59:03
27 January 2015 at 22:33 #177539
capnahab
Participant
@capnahab
Ok , the lido cafe bolts to the top slide and the curtains around it can be tightened by a cam pulling the toolholders corrugations (similar to the lido cafes corrugations) to mate with lidos ones this locking everything tight. These are hardened and ground. The lever operates the cam and when released it slackens the lidos surround such that it can be rotated and the toolpost corrugations can slide into a different position to mate with the lidos corrugations in a different position. – Handy for eg chamfering. see pics below, the cam outlined in green. s'that clear ?.
28 January 2015 at 09:16 #177569
Neil Wyatt
Moderator
@neilwyatt
Beautifully over-engineered Cap'n

Neil
28 January 2015 at 10:28 #177577
Clive Hartland
Participant
@clivehartland94829
But lovely to use as they cover all the needs of a toolholder, multiple positions with good clamping and a system for any lathe.

Clive
28 January 2015 at 13:36 #177591
Swarf, Mostly!
Participant
@swarfmostly
Michael and Captainahab,

Thank you for your most gracious and informative replies to my post.

I had one of those 'seconds after hitting the post button' fears – what if they think I'm taking the mickey when, in fact, my reference to 'lido cafe' windows' was just a bit of whimsy!!!

I now understand how that pattern of tool-post works, it looks effective but it must be costly to manufacture?

Best regards,

Swarf, Mostly!
28 January 2015 at 19:50 #177617
capnahab
Participant
@capnahab
You can take as much Mickey as you like.

Neil, ' over-engineered ', – its a concept I have struggled to understand. A bit like 'I couldnt care less'. Its a bit like saying don't use a scalpel for an appendicectomy because its over engineered, you could use a carving knife because it cuts and you can also use it on the sunday joint.
28 January 2015 at 20:23 #177624
SteveI
Participant
@stevei
Hi,

Neil – I'll bight. Why is it "over-engineered"?

Steve
29 January 2015 at 09:47 #177656
Neil Wyatt
Moderator
@neilwyatt
It's awfully complicated when I could get almost the same result by just making some extra ratchet notches in the bottom of my QCTP.

Neil
29 January 2015 at 11:35 #177671
SteveI
Participant
@stevei
Posted by Neil Wyatt on 29/01/2015 09:47:47:

It's awfully complicated when I could get almost the same result by just making some extra ratchet notches in the bottom of my QCTP.

Neil

Neil, I think that your "almost" caveat is the whole point. Can you get a design that is simpler that gives you equal or better result? (result for our purposes being, rigidity, and repeatability of tool location etc etc)? If so I very much look forward to reading about it. For reference I am currently thinking about a solution for my shaper to cut the splines to make my own A sized blanks.

Steve
24 May 2017 at 18:25 #299481
Joseph Noci 1
Participant
@josephnoci1
I know this was discussed herein a while back, but it seems the KOMET threading inserts for the Multifix retractable tool holders are becoming very difficult to obtain. The Multifix holder uses a KOMET FG(1,2,3..) insert and I cannot seem to find a source able to supply 'individuals' anywhere – USA KOMET are stuck up and just don't respond! German KOMET seem to not ship to Africa…

The ( previously proposed) Ifanger inserts do NOT fit the Multifix holder – the serrated teeth that comprise the grip are much coarser, and Ifanger's response to a query – No, you cannot use our inserts in that holder.

Does anyone know of a Insert source that works??

Even Nina at Create Tool, the Chinese mnfr of the Multifix post and holders has had little luck on my behalf!

I am aware of the hacks people have implemented. welding on a conventional insert head, etc, but nothing cuts as nicely as a really sharp HSS KOMET insert when threading..

regards

Joe
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