Parting Tool Holder

Parting Tool Holder

This topic has 6 replies, 5 voices, and was last updated 15 April 2021 at 09:21 by William Chitham.

Viewing 7 posts - 1 through 7 (of 7 total)

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13 April 2021 at 17:52 #20239
William Chitham
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@williamchitham75949
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13 April 2021 at 17:52 #539570
William Chitham
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@williamchitham75949
I finally got round to making my first tool holder for my lathe. I bought the parting tool from Arc with the block that fits the standard holder and it worked ok but the extra overhang always bugged me so decided to make this based loosely on the type you can buy for Dickson style toolposts. I decided to make it to a fixed height since it is dedicated to a single cutting tool but if it turns out that some fine adjustment is necessary I can always put a screw through the top of the "hook". The main chunk is cold rolled steel, the hook and the clamping bar are silver steel – the clamp bar was hardened with torch and oil quench.

William.
13 April 2021 at 18:13 #539572
Gerhard Novak
Participant
@gerhardnovak66893
Nice work, but I think you will miss the height adjustment. may be you could have a shim below if needed.

I like the touch with the producers name and year. Is it punched or engraved?
13 April 2021 at 18:47 #539579
old mart
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@oldmart
The less overhang the better, that is why I avoid QCTP's.
13 April 2021 at 19:14 #539581
Tony Pratt 1
Participant
@tonypratt1
William, I've worked with many different tool holding systems & all their have pros & cons, never really found QCTP's a problem. keep up the good work.

Tony
14 April 2021 at 12:00 #539671
Howard Lewis
Participant
@howardlewis46836
Normally, I advocate absolute rigidity, but in the case of parting tools, a little flexibility could be an advantage, in that it will allow the tool to "give" when the going gets tough, and avoid a dig in.

The holder that I was given, many years ago, is slotted, and when being used in the rear toolpost, it can be seen to yielding slightly. At the risk of asking for problems, dig ins are almost unknown.

Howard
15 April 2021 at 09:21 #539825
William Chitham
Participant
@williamchitham75949
Posted by Gerhard Novak on 13/04/2021 18:13:50:

Nice work, but I think you will miss the height adjustment. may be you could have a shim below if needed.

I like the touch with the producers name and year. Is it punched or engraved?

Brief use so far suggests the height is right but as you say I can always shim it if it needs to go up a bit. Can't shim it downwards though! If it turns out to be too high I can take a bit off the hook. The letters are very inexpertly done with a cheap set of punches.

W.
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