Deep drilling aluminum
On Wed, 01 Sep 2010 11:48:02 -0500, Ignoramus4117
wrote:
I was making something on the CNC mill last night. It is a little
block that I would clamp to the quill of the mill, so that I would
attach the Loc-Line coolant line to the quill. That way the coolant
would follow the cutting tool as the quill is raised or lowered.
Anyway, as part of that, I had to drill a deep hole (comparatively). I
used a peck drilling cycle and it worked, but took way too long, with
withdrawal of the tool and lowering it down, etc.
So I wanted to double check what is the recommended procedure for deep
drilling aluminum.
My feeling is that at the given RPM of 2400, I should have used a much
more aggressive feed rate than I used.
nobody giving you numbers. I'd go 8 IPM and peck of .125 (1/2 D) if
its a 1/4" drill. But I got dials to quickly change feed and speed, no
doubt an adjust would be in order on part one. Don't consider me the
definitive expert on speeds and feeds - I do it all by feel.
karl
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