Re: Fadal Drilling speed

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "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.