With an open machine I tend to us air rf vacuum to extract chips. One
needs enough air movement to get turbulence for effective chip removal.
I tend to start pockets, etc with a drill to within .02 of full depth.
I've also drilled a pattern of holes to extract major volumes of
material from
01, 2022 4:07 AM
To: emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] Deep slot chip removal
[EXTERNAL EMAIL] Be sure links are safe.
tor 2022-12-01 klockan 08:18 + skrev Gregg Eshelman via Emc-users:
> Flood coolant, air blowing, or vacuum. Or pre-drill a bunch of holes
> to
Yes, you should mill slots with a slightly smaller cutter and cut slightly
undersize. Then cut to the finished dimensions. That way during the finish pass
only one side of the cutter is touching the work. Chips should be removed
before the finish pass.
Some people make one or two 'spring
tor 2022-12-01 klockan 08:18 + skrev Gregg Eshelman via Emc-users:
> Flood coolant, air blowing, or vacuum. Or pre-drill a bunch of holes
> to almost finished depth to remove the majority of the waste before
> milling.
Got that. Then the only question left is if using a mill at least
slightly
Spinlde size is around 8-9kW but currently limited to about 1/4 of the
torque. 12mm tool milling a slot same with as tool.
Changed program and will predrill thru holes first to help chip
evacuation. This will solve the problem for this time but guess this is
not the last time I machine a deep
Flood coolant, air blowing, or vacuum. Or pre-drill a bunch of holes to almost
finished depth to remove the majority of the waste before milling.
On Wednesday, November 30, 2022 at 10:08:49 AM MST, Nicklas SB Karlsson
wrote:
Milling a deep pocket spiral down work great first turn but after
What size mill and tool are we talking about? Is this <1kW of spindle
power? Is the tool <10mm? I'm a bit surprised that the spindle would
stall due to uncut chips.
On Wed, Nov 30, 2022 at 12:43 PM Nicklas SB Karlsson wrote:
> ons 2022-11-30 klockan 12:11 -0500 skrev Matthew Herd:
> > A
ons 2022-11-30 klockan 12:11 -0500 skrev Matthew Herd:
> A drill for an entry hole is never a bad idea. Other options include
> using
> a tool with a smaller diameter or fewer flutes. Can you improve chip
> evacuation? That's never a bad idea in any event. If feasible, a
> vacuum
> or some
A drill for an entry hole is never a bad idea. Other options include using
a tool with a smaller diameter or fewer flutes. Can you improve chip
evacuation? That's never a bad idea in any event. If feasible, a vacuum
or some repeated blasts with the air gun are helpful. Also, can you reduce
Milling a deep pocket spiral down work great first turn but after a
while torque is not enough and mill stop. Suspect it is because mill
have to cut old chips in addition to machining part.
Maybe it is a good idea to use drill bit a little bit smaller than
slot?
Nicklas Karlsson
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