Re: Clearing Debris from Flutes Between Plunges...

On May 19, 4:08 pm, "Joe AutoDrill" <b...@xxxxxxxxxxxxxx> wrote:
What is the material, and drill material/coating? figuring a way to keep
the material from sticking IN the flute is the first place is the better
solution. But,

Think of the material as government rated carbon fiber... That's about all
I can say.

Is the spindle free spinning, or geared? Are the drills the same diameter?
If it is free spinning, and the material in the flutes is not packed at
the drill tip, you could possibly stop the drill and plunge it into a
plate with the drill flute section geometry that pushes the material UP
the flutes. Kinda like a backwards broach.

Drills run 24/7 unless they are changing tooling. No human interaction.
All automated...

Other questions. Is it possible to change the drill coating to be
antistick?

...Maybe but because the material is abrasive I guess it is possible that it
could become prostick before it becomes antisharp or produll. :)

Doing a reverse flute cleaning mechanism is practical, but probably more
costly than the above. If you want to pursue that route I can design &
fabricate one.

Might be justifiable for the customer based on their volume.

I've got your e-mail address and will let you know if they want to talk to
you about it, etc. I won't get in the middle unless they want me to. I
like doing what I know how to do... Or in other words, I want to visit all
my customer's physical areas on vacation and not to fix a machine. :)
--

Regards,
Joe Agro, Jr.
(800) 871-5022
01.908.542.0244
Automatic / Pneumatic Drills:http://www.AutoDrill.com
Multiple Spindle Drills:http://www.Multi-Drill.com

V8013-R


Hi Joe,
If it's carbon fiber materials their drilling, I'd use a
diamond
(or "diamond like") coated drill at a minimum, or even a veined
PCD drill for maximum abrasion resistance and low friction.
If coated drills are used, a trial period with wear analysis should
be done to come up with a swap-out schedule. For an example
of the veined drill, see www.abrasive-tech.com/pdf/pcddrillusa.pdf.

For a positive cleaning method, you might try using a combination
of vacuum nozzles (you want to make sure debris doesn't fall back
into the drilled hole) and perhaps nylon-tipped pneumatic shot pins,
arranged in a circle around the drill bit. If the drill is stopped,
and
the pins extended, then whichever pins fit into the flutes would
then wipe the gullet of the drill if the drill is retracted while the
pins are stationary. The vacuum nozzles would collect the chips.

It's a lot to pack into the area, especially if you're (presumably)
using your multi-drill technology. A properly designed drill and
vacuum arrangement might work fine by themselves.

Just some thoughts, HTH.

Wud
.

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