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Round segmented collets: Any use in non-CNC shop?
- Thread starter Cannonmn
- Start date
- Replies 27
- Views 3,250
Danny VanVoorn
Titanium
- Joined
- Nov 3, 2002
- Location
- St.Louis, Missouri, USA
I've seen some nice index fixtures that take those, not real common but are out there.
Dan
Dan
Last pix on right, that notch looks like the piece is NOT a collet pad,
rather a feed finger pad.
BTW these were not used on only on CNC's, but turret lathes, automatics, Brownie
cam automatics, National Acme multipsindle auto's, etc.
i_r_machinist
Titanium
- Joined
- Apr 12, 2007
- Location
- Dublin Texas
dillon "e" collets maybe? Cat's meow for concentricity. Sort them into sets and post in the for sale forum.
have fun
i_r_
have fun
i_r_
Dillon? Haven’t seen that name yet but there’s another pile of them I haven’t pawed through yet, maybe today.
Ok from the first posts I was thinking these things were only for static position hold indexing, but last post indicates they are used in lathes too. My wild-arse guess is that the dimpled/textured ones can be used for turning and smooth ones are for indexing only, anyone confirm that? There are some 2-segment ones with right angle contour inside, obviously for bar stock. Unfortunately don’t have time these days for sorting and selling, the time is more valuable than the money, but when I get more help that may happen.
Ok from the first posts I was thinking these things were only for static position hold indexing, but last post indicates they are used in lathes too. My wild-arse guess is that the dimpled/textured ones can be used for turning and smooth ones are for indexing only, anyone confirm that? There are some 2-segment ones with right angle contour inside, obviously for bar stock. Unfortunately don’t have time these days for sorting and selling, the time is more valuable than the money, but when I get more help that may happen.
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Monarchist
Diamond
- Joined
- Oct 2, 2012
- Location
- Sol, Terra
Used in lathes TOO? Oh, yes!
If turning bar stock for a crust is taking up some of that valuable time, you might seek a power-operated master collet for these and ADD to the set(s).
Scary fast and accurate when properly used, they are sort of at the "top of the food chain" in that workholding zone.
Then you'd have more time to sort the NEXT challenge..
you can use them in a 3 jaw also, US Shop Tools sells jaw sets that accept Warner Swasey #4 I believe? although it would be cheaper to make a set of your own out of the AISI 1050 soft jaws they also sell, and this would let you make them for Hardinge or some other standard.
Thanks. After posts here mentioned Master Collets, a new term for this newbie, I looked up photos of various kinds and I’m almost positive there are some in my junk box. Whether those fit over any of the segmented collets I have is another question I’ll check out when time permits.
Monarchist
Diamond
- Joined
- Oct 2, 2012
- Location
- Sol, Terra
Yah. "Can". But you gain little - perhaps nothing - over soft-jaws / fixturing (or even "ordinary" jaws), lose nearly ALL of the "pad" niche advantages. Shorter cycle-times, better repeatability, shorter hang-out (usually), and a generally superior GRIP (also "usually")..
The other players being the powered closer system and a bar feeder.
IOW - the overall system as it was meant to be used can be a worthwhile 'edge' to some shops and tasking, but not worth the bother to others, least of all as a kludge.
For some, it might depend on how many collet pads they already have wasting away in a blue bin somewhere.
Interesting. One of the things I want to do next year is try them out in a 3-jaw then in a master collet, which we probably have here somewhere, still looking. There are so many of the collet segments (many hundreds of lbs anyway) that it may take somebody a day of systematic sorting to match up a few complete 3-piece sets, since they are randomly scattered among many containers. I spent 1/2 hr today grouping pieces that looked identical on the inside and only got 2 sets of 2 matched segments each, didn’t find the 3rd one, didn’t have time to look through more containers. I think we have some complete sets new-in-the-Box somewhere so I’ll wait till I re-locate those to do the experiments.
Whetstone
Cast Iron
- Joined
- Mar 27, 2011
- Location
- Providence RI
The first two pictures of collet pads with a ridge around the outside look like they fit a #3 Warner & Swasey turret lathe. If a set of 3 is about 2” in diameter it would be fit a #3 which had a max bar size if 1-1/2”. There are a few different styles in both 3 pad and 4 pad. Smooth bore is for clean material and the serrated pads are for rougher hot rolled stock or if you really needed extra grip.
The little square key looks to be an shop made add on. I don’t know what the smooth outer bore ones are for.
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Monarchist
Diamond
- Joined
- Oct 2, 2012
- Location
- Sol, Terra
That could be funny, if it hadn't been such a waste of time.
As if.. a long-lost Billionaire Uncle left you his legendary ten-thousand pair shoe closet... and that's when you found out he'd been a peg-legged cross-dresser all along, and just what the "F" were YOU going to do with 5,000 left-foot-only high-heeled shoes and a thousand pounds of rubber crutch-tips? Colour-matched, of course...
That could be funny, if it hadn't been such a waste of time.
As if.. a long-lost Billionaire Uncle left you his legendary ten-thousand pair shoe closet... and that's when you found out he'd been a peg-legged cross-dresser all along, and just what the "F" were YOU going to do with 5,000 left-foot-only high-heeled shoes and a thousand pounds of rubber crutch-tips? Colour-matched, of course...
I just hope my business never gets big enough to require me to provide separate rest rooms for those PLCD’s. Way tHings are going it may not be far off. They keep adding letters I have to google to interpret. LGBTQ+?
An old PM thread with helpful links on this topic
http://www.practicalmachinist.com/vb/general/collet-identification-kbc-turrent-lathe-327448/
Of those links, this one has hundreds of further links to a very large variety of tooling: https://www.sommatool.com/mobile/products.asp
http://www.practicalmachinist.com/vb/general/collet-identification-kbc-turrent-lathe-327448/
Of those links, this one has hundreds of further links to a very large variety of tooling: https://www.sommatool.com/mobile/products.asp
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I needed to see various master collets so I can recognize any I have when rummaging thru the junk box (my term for a wall of pallet racks where we keep the seldom-used items.). So here are some photos from the web which I repost here without specific attribution under the doctrine of free use for educational purposes. Google search string used was “collet pads master collet Somma.”
Monarchist
Diamond
- Joined
- Oct 2, 2012
- Location
- Sol, Terra
Not funny. I reached the stage - 1994 - where the paperwork in Day Job (which did, after all, need to hold ONE HUNDRED and FIFTY THREE "body Corporate" vehicles, three per each US state plus the HQ / holding companies, was sooo onerous that I retired, moved offshore until second retirement.
Y'see.. the PROBLEM is.. that a one/few man operation doesn't get ENOUGH "exemptions" for being under 50, under 25, fewer than FIVE...etc, wotever.. employee head-count.
There is too much annual, quarterly, monthly "filing" of forms to be done for even a one-man enterprise, even if there is nought to report.
Doesn't matter if all that is creeping Left-wing-nut Socialism/Communism or creeping Right-Wing-Nut Big Corp cronyism, both, or neither.
It is a parasitical be-you-rock-rat overload, legions of Gummint "employees", (not "workers"), local, State, and Federal - the paper they shuffle, and their benefits and retirement plans for all that non-productive effort - regardless of what political "brand" one thinks it carries on any given day.
Politicizing it is actually no more useful than issuing photo-ID to individual tapeworm segments whilst they carry-on EATING of your hard-earned nutrition.
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