Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
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Philabuster's Hobby Shop
- Thread starter Philabuster
- Start date
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Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
I took on a job to machine some threaded adapters machined from 4140 hex stock.
To do the job right, I really needed to grab the stock with some hex collet pads. I spent the day yesterday machining steel soft jaws to hold the pads. I went with Warner & Swasey #5 471 collet pads because I already had a bunch of them in round sizes but I had to buy the 1-1/16" hex ones.
Everything turned out nice. Ran a bar end to check them out.
To do the job right, I really needed to grab the stock with some hex collet pads. I spent the day yesterday machining steel soft jaws to hold the pads. I went with Warner & Swasey #5 471 collet pads because I already had a bunch of them in round sizes but I had to buy the 1-1/16" hex ones.
Everything turned out nice. Ran a bar end to check them out.
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Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
Runout is better. No chuck marks in the material and I can use a hard length stop.
Ox
Diamond
- Joined
- Aug 27, 2002
- Location
- West Unity, Ohio
It looks like your tight on the nose, so I'm guessin' that you put a bit of taper in your bore?
What size W&S did those come from?
Dang - that must be a 3" capacity?
That's bigger'n a #5, whatever comes after that....
12" chuck?
---------------------
Think Snow Eh!
Ox
What size W&S did those come from?
Dang - that must be a 3" capacity?
That's bigger'n a #5, whatever comes after that....
12" chuck?
---------------------
Think Snow Eh!
Ox
Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
I chucked on a ring in the face groove to preload the jaws to the front and I bored the jaws straight.
These are marked W&S 471, which are 3" in diameter. My big Hitachi Seiki turret lathe is a #5 and had this series of collets with it when I bought it.
The chuck is an 8" Howa. I had some 10" soft jaws that were 2" thick so I used those for this project. I milled them down to 1.5" above the pads to reduce the weight.
Ox
Diamond
- Joined
- Aug 27, 2002
- Location
- West Unity, Ohio
.. just now remembering how W&S pads work:
So - you have a retaining bolt coming in through both of the bolt holes?
Can you change the pads with it together, or doo you need to dump the jaws first?
--------------------
Think Snow Eh!
Ox
So - you have a retaining bolt coming in through both of the bolt holes?
Can you change the pads with it together, or doo you need to dump the jaws first?
--------------------
Think Snow Eh!
Ox
Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
Ox
Diamond
- Joined
- Aug 27, 2002
- Location
- West Unity, Ohio
Then you could prolly put those jaws on Jenny Craig a bit?
---------------------
Think Snow Eh!
Ox
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Think Snow Eh!
Ox
Ox
Diamond
- Joined
- Aug 27, 2002
- Location
- West Unity, Ohio
Oh I see, you turned a pocket in the front for your ring!
Of course you shouldn't need that anymore, but - yeah!
----------------
Think Snow Eh!
Ox
Philabuster
Diamond
- Joined
- Jul 12, 2006
- Location
- Tempe, AZ
cnctoolcat
Diamond
- Joined
- Sep 18, 2006
- Location
- Abingdon, VA
US Shop Tools gets like $5-800 per set of these collet pad master jaws!
That's why like Phil did, I roll my own.
I like to make my top jaws as low as possible off the face of the chuck, just wide enough to seat the length of the collet pad. This requires the jaws to be removed to change the pads (we seldom change sizes), but puts the clamping forces as close to the chuck as possible.
The "W&S 471" pads are 3" OD (the bore you need in your chuck jaws), and have a max capacity of ~2-3/4" round.
ToolCat
That's why like Phil did, I roll my own.
I like to make my top jaws as low as possible off the face of the chuck, just wide enough to seat the length of the collet pad. This requires the jaws to be removed to change the pads (we seldom change sizes), but puts the clamping forces as close to the chuck as possible.
The "W&S 471" pads are 3" OD (the bore you need in your chuck jaws), and have a max capacity of ~2-3/4" round.
ToolCat
