Re: Pressure of flood coolant--More Fadal Pimped-ness

On Wed, 18 Apr 2007 06:19:12 -0400, "Proctologically Violated©®"
<entropic3.14decay@xxxxxxxxxxxxxxxxxx> wrote:

Awl--

Iffin yer innerested:
35 psi zero flow,
30 psi, 5-6 1/8 locline nozzles full tilt.
Not bad, considering city pressure is 60 psi.
Assuming I read dat old gauge right--unfortunately it's 200 psi full scale.
Gotta getta 60 psi gauge. :(

Yeah, I know, some muhfugguh's gonna post about his 3,000 psi coolant....
Which, I hear, is Da Bomb.... pays for itself right away, for production.

1/3 to 1/2 hp Graymills single phase centrifugal on a 30 gal fadal tank.

Inside the cabinet fadal plumbed a "drain spray" to reduce chip clogging
It's easy enough to re-plumb that with other connections, for "stationary"
coolant, ie, coolant that does not move with the spindle, an inside sprayer,
pressure gauges, etc.

Gives you sumpn to look at.... :)


I found a GOOD manufacture/supplier of pumps and put one on an OmniTurn
a week or two ago.

Mounted the pump to the right of the existing coolant tank, with a
suction line out the back of the cabinet, through a chip strainer, back
into the cabinet, along the back wall and with a flex line through a bag
strainer into the suction side of the coolant tank.

1/4" Hydraulic hose from the pump, up into the main work area, and to a
homebrew drill holder with custom bushings. A carbide drill, .060 holes
at the face of the bit (2 holes). Contactor mounted on the back of the
cabinet, running from an M function.

350psi at the exhaust manifold, 4 gallons a minute free flow.

Results....

A $6 high quality .30 cobalt drill in this material (a nickle alloy)
without through drill coolant was 5 holes per drill bit. Proper speeds
and feeds with pecking or without..didnt make much difference.

Now with through drill coolant with a $55 carbide bit..Im getting 125
holes per bit at nearly double the cycle time, with no pecking required.
Straight plunge at .0015 IPR 1.25 deep.

Customer just gave me a PO for 7 more units installed ASAP.

Im thinking of making a retrofit kit available to OmniTurn owners. And
Ive got a splash kit on the drawing board for those with retrofited
chuckers and so forth that should keep most of the spray in the machine.

Install time should be about 3-ish hours start to finish. You will need
a hole saw or punch.

The pumps and strainer units are costing me about $850 alone.


Gunner

"I don't want to abolish government.
I simply want to reduce it to the size where I can
drag it into the bathroom and drown it in the bathtub.
-- Grover Norquist
.

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