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Fadal Drilling speed

smeboss
 

Hi Guys

I'm wondering how fast a Fadal 4020 can drill a series of 15/16 holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4" centers?

I don't have any experience with these machines, but it takes me about
30-60 seconds per hole manually.

Thanks

Charles
Ken Campbell
 

----- Original Message -----
From: "smeboss" <c65pratt@...>
I'm wondering how fast a Fadal 4020 can drill a series of 15/16 holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4" centers?
Charles
*
One advantage of controlled feed ( cnc or leade screw control ) is that you
don[t slow down and work harden the steel being cut .. with hss drill, 2
flute, try 0.001 per flute per turn, so a 1/2 inch plunge would take about
1/4 minute at 1000 rpm.
This is per hole, so have to add up your fast approach rates, and if you a
lot of these you could go to carbide tooling and about double that rate.

If high accuracy in locating the holes is important, even with a sturdy
mill, you might want to do a center/starter drill "peck" on each hole first
.. this would be almost as fast as rapid traverse to each hole while
pecking, the peck diamter only has to be a teensy wider than the flat on the
larger following drill point, ie the following larger drill is located by
the angled cutter tips, not the center flat.

Hope this helps. note the brand of the drilling machine does not matter (g).
ken campbell, deltawerkes





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Checked by AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.7/436 - Release Date: 9/1/2006
Steve Blackmore
 

On Sat, 02 Sep 2006 21:20:13 -0000, you wrote:


I'm wondering how fast a Fadal 4020 can drill a series of 15/16 holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4" centers?

I don't have any experience with these machines, but it takes me about
30-60 seconds per hole manually.
Ignoring that specific machine, my feed/speed tables reckon 2 inches per
minute at 400 rpm, using a HSS .9375 inch drill in mild steel. Power
requirement for that is .35 HP.

A CNC machine should be able to drill all 8 holes in approx 2 1/2
minutes from start to finish.

Steve Blackmore
--
 

--- In CAD_CAM_EDM_DRO@..., "smeboss" <c65pratt@...> wrote:

Hi Guys

I'm wondering how fast a Fadal 4020 can drill a series of 15/16 holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4" centers?

I don't have any experience with these machines, but it takes me
about
30-60 seconds per hole manually.

Thanks

Charles
Once you get into full sized CNC machines its not so much a question of
what the "machine" can do, more a question of what the tooling can do.

I had to drill a double grid pattern of 20mm holes on 26mm centers in
3/8" hot rolled. (heat exchanger end plates)

Using a Mori Seiki SV50B (CAT40) and a Kennametal solid carbide drill I
was punching thru in 1.3 seconds...

Feed .027" / rev.

OK I know the Fadal won't quite do that (it was requiring about 24 of
my 30HP) but it would get close with optimal tooling.
Raymond Heckert
 

If you go the CNC route, I'd strongly suggest you look into one of those
'slugger' type drills. They cut much faster, and with less power than
conventional drills, and you don't have to drill through the 118 lead angle
of the point. Best of luck...

RayHex

-----Original Message-----
Date: Saturday, September 02, 2006 2:52 PM
Subject: Re: [CAD_CAM_EDM_DRO] Fadal Drilling speed



----- Original Message -----
From: "smeboss" <c65pratt@...>
I'm wondering how fast a Fadal 4020 can drill a series of 15/16 holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4" centers?
Charles
*
One advantage of controlled feed ( cnc or leade screw control ) is that you
don[t slow down and work harden the steel being cut .. with hss drill, 2
flute, try 0.001 per flute per turn, so a 1/2 inch plunge would take about
1/4 minute at 1000 rpm.
This is per hole, so have to add up your fast approach rates, and if you a
lot of these you could go to carbide tooling and about double that rate.

If high accuracy in locating the holes is important, even with a sturdy
mill, you might want to do a center/starter drill "peck" on each hole
first
.. this would be almost as fast as rapid traverse to each hole while
pecking, the peck diamter only has to be a teensy wider than the flat on
the
larger following drill point, ie the following larger drill is located by
the angled cutter tips, not the center flat.

Hope this helps. note the brand of the drilling machine does not matter
(g).
ken campbell, deltawerkes
smeboss
 

WOW! That's fast, I was thinking of using a carbide insert drill
from Allied Machine & Engineering Corp. (Doall)

Thanks for the information!

Charles

--- In CAD_CAM_EDM_DRO@..., "skullworks"
<skullworks@...> wrote:

--- In CAD_CAM_EDM_DRO@..., "smeboss" <c65pratt@>
wrote:

Hi Guys

I'm wondering how fast a Fadal 4020 can drill a series of 15/16
holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4"
centers?

I don't have any experience with these machines, but it takes me
about
30-60 seconds per hole manually.

Thanks

Charles
Once you get into full sized CNC machines its not so much a
question of
what the "machine" can do, more a question of what the tooling can
do.

I had to drill a double grid pattern of 20mm holes on 26mm centers
in
3/8" hot rolled. (heat exchanger end plates)

Using a Mori Seiki SV50B (CAT40) and a Kennametal solid carbide
drill I
was punching thru in 1.3 seconds...

Feed .027" / rev.

OK I know the Fadal won't quite do that (it was requiring about 24
of
my 30HP) but it would get close with optimal tooling.
smeboss
 

Hi Steve

Thanks
for the information! This is very helpful!

Charles

--- In CAD_CAM_EDM_DRO@..., Steve Blackmore <steve@...>
wrote:

On Sat, 02 Sep 2006 21:20:13 -0000, you wrote:


I'm wondering how fast a Fadal 4020 can drill a series of 15/16
holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4"
centers?

I don't have any experience with these machines, but it takes me
about
30-60 seconds per hole manually.
Ignoring that specific machine, my feed/speed tables reckon 2
inches per
minute at 400 rpm, using a HSS .9375 inch drill in mild steel.
Power
requirement for that is .35 HP.

A CNC machine should be able to drill all 8 holes in approx 2 1/2
minutes from start to finish.

Steve Blackmore
--
smeboss
 

Thanks Ken

Very helpful information!

Charles

--- In CAD_CAM_EDM_DRO@..., "Ken Campbell"
<deltainc@...> wrote:


----- Original Message -----
From: "smeboss" <c65pratt@...>
I'm wondering how fast a Fadal 4020 can drill a series of 15/16
holes
thru 3/8 mild steel, rectangular patttern, 2 rows of 4, 4"
centers?

Charles
*
One advantage of controlled feed ( cnc or leade screw control ) is
that you
don[t slow down and work harden the steel being cut .. with hss
drill, 2
flute, try 0.001 per flute per turn, so a 1/2 inch plunge would
take about
1/4 minute at 1000 rpm.
This is per hole, so have to add up your fast approach rates, and
if you a
lot of these you could go to carbide tooling and about double that
rate.

If high accuracy in locating the holes is important, even with a
sturdy
mill, you might want to do a center/starter drill "peck" on each
hole first
.. this would be almost as fast as rapid traverse to each hole
while
pecking, the peck diamter only has to be a teensy wider than the
flat on the
larger following drill point, ie the following larger drill is
located by
the angled cutter tips, not the center flat.

Hope this helps. note the brand of the drilling machine does not
matter (g).
ken campbell, deltawerkes





--
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.1.405 / Virus Database: 268.11.7/436 - Release Date:
9/1/2006

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