Dowel pin replacement
Buerste
work but the wear a slight groove in them and the get burnished so smooth
that they slip. They are only $0.50 ea. but four a day wear out and they
take about 3 minutes to change. Time that the machines aren't running
equals about $30/day. Is there anything better? The surface on a new dowel
pin is perfect for my application but any smoother would be bad.
Karl Townsend
"Buerste" <bue...@wowway.com> wrote in message
news:FzNdn.74360$RS6....@newsfe15.iad...
You can get HSS in .500" diameter pretty cheap. Maybe try that???
Bet you could find carbide in .500" also for big bucks. That stuff is very
brittle, might just break on ya.
Can you stand an extra couple thou? Kasenite surface harden your dowel pins
These ideas are worth just slightly less than you paid for them.
Karl
Snag
Half inch solid carbide router bit shanks . I've got a handful that I can
send ya , just email me your snailmail addy . My reply-to is good .
Cut 'em off with a diamond wheel ...
--
Snag
End mill shanks too ...
Buerste
"Karl Townsend" <karl_tow...@embarqmail.com> wrote in message
news:hl8m7m$1v3$1...@speranza.aioe.org...
For some strange reason, there is a bit of lead-drag on the wire from the
tempering operation and it bonds to carbide but not to the dowel pins. I
like the idea of HSS, I'll look into it. No, I don't have a couple of thou,
my design isn't great. I do have a new mechanism in process that will use
hardened gears to feed and the preliminary tests are very promising.
I sent a package to "J", I have millions more if they work well. I figured
out that with a full pot that the lead stream pressure would overwhelm the
cavities and not fill out as well and the valve adjustment is too coarse.
With the pot less than half full, it works great.
Buerste
"Snag" <snag...@comcast.net> wrote in message
news:lsRdn.77451$s%.46765@newsfe18.iad...
Great idea! I have tried narrower carbide and there is some lead-drag on
the wire that bonds to the carbide but not to the dowel pins, But, it might
be a case of surface finish. My address is on "OHIOBRUSH-DOT-KOM"
I'll trade you brushes.
Denis G.
Could you set up another set of rollers perpendicular to the drive
rollers (like a winch farilead) to guide the wire to an unworn spot on
the drive rolls?
Mark Rand
Another alternative on a similar line of thought:- Re-design so that the rolls
could be indexed across. That way 4" or longer HSS blanks could be used
without wasting time on cutting them up. Possibly, if the rolls are
continuously inched from side to side, the wear could be evened out to the
point where total life is much greater?
Mark Rand
RTFM
Mouse
easy to change would eliminate most of your down-time.
Karl Townsend
> I sent a package to "J", I have millions more if they work well. I
> figured out that with a full pot that the lead stream pressure would
> overwhelm the cavities and not fill out as well and the valve adjustment
> is too coarse. With the pot less than half full, it works great.
Thanks. I just talked to "the kid" this morning. he's up past his tail in
snow and his diesel truck just became a steam engine. NOT good. It may be a
few days before they get a trial.
Karl
Snag
Alrighty , I'll get 'em off to you on tuesday . These are all worn or
chipped bits from a CNC router machine . But the shanks are undamaged .
--
Snag
Larry Jaques
<bue...@wowway.com> scrawled the following:
How about feeding it (at a more straight-on angle) between rubber
tires, then through the dowel pins? Pre-pinch guides, as it were.
A longer distance between the source spools and the pins might help,
too.
--
It's a great life...once you weaken.
--author James Hogan
Gunner Asch
wrote:
Carbide pins.
They can be had...though they are a bit harder than dowels to find.
Gunner
Whenever a Liberal utters the term "Common Sense approach"....grab your
wallet, your ass, and your guns because the sombitch is about to do
something damned nasty to all three of them.
spaco
Is it wear or deformation?
It never occurred to me to ask what material dowel pins are made from,
but maybe all you need is a length of O1 or W1 drill rod cut to length
and heat treated.
Pete Stanaitis
-----------------
Wes
>For some strange reason, there is a bit of lead-drag on the wire from the
>tempering operation and it bonds to carbide but not to the dowel pins. I
>like the idea of HSS, I'll look into it. No, I don't have a couple of thou,
>my design isn't great. I do have a new mechanism in process that will use
>hardened gears to feed and the preliminary tests are very promising.
Did you ever try HSS? How did it work?
Wes