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Threading Die Holder
Darren:
Thanks for all the kind comments chaps,
It wasn't hard to make at all, the hard bit was figuring out how :bang:.....enjoyed the learning exercise. :ddb:
Eric, I'm not sure I'd want to hold a camera, my phone, and operate it at the same time. Could end up with an interesting result !!! :zap:
Maybe I need to make a phone holder :scratch:
Brass_Machine:
--- Quote from: Darren on April 03, 2009, 12:43:59 PM ---...
Eric, I'm not sure I'd want to hold a camera, my phone, and operate it at the same time. Could end up with an interesting result !!! :zap:
Maybe I need to make a phone holder :scratch:
--- End quote ---
You need to talk to our man, Ralph... make up a camera mount for the lathe!
:proj:
Eric
bogstandard:
It isn't the camera holding that is the problem, you need swivel eyes to keep one eye on the job and one on the camera.
You need eyes like a chameleon.
Bogs
John Hill:
Darren, when I last broke a die I was told, in no uncertain terms, that it broke because I did not back off frequently enough to clear the chips!
This is one time when I would like to learn I am wrong! ::)
bogstandard:
John,
I very rarely do any hand dieing any more. Just special threads using carbon dies.
If you start with a nice sharp die, workpiece of the correct diameter and the die spread set for the initial cut, plus as long as you have somewhere for the chips to go and plenty of good quality lube, you usually have no problems.
I think the metal reacts in a different way when hand cutting, it has time to harden, so needs to be cleared before cutting the next bit. With power cutting, it is done before it has time to do anything. Also I would never use carbon dies for power cutting, HSS and above only.
I use both the type Darren is making and also a normal die holder for powered cutting. With the die holder, getting it square is the most important part, that is normally taken care of with a machine holder.
I regulary make threaded rod in small sizes (2mm & 3mm) using the hand die method, Cut the first 50mm, then move a bit more out of the chuck, then cut the next bit. It would take you hours if you did it by hand.
All this BTW is done on the slowest speed the lathe will run at.
You can in fact buy die heads (Coventry etc) that hold a range of threading cutters, but are really for production work.
http://www.namco-tooling.com/coventry-dieheads-chasers.html?gclid=CKaa-aDX1ZkCFQiF3god3SEqZw
Just a bit more useless information.
John
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