Re: [CAD_CAM_EDM_DRO] Motor size calculation HELP

Laurence Casey wrote:

>
>Yes, the back of the tooth is smeared with metal.
>

You can cut at this speed, but you need to turn the cutter a LOT faster
than 2300
RPM. Running a solid carbide 1/4" cutter at 15000 RPM is about right.
Then, with a 2-flute end mill, you could run at 40-50 IPM. Your spindle
might need a lot of HP to do this, too.

> I was not under the
>impression that IPM really meant rapid speed. That’s why I didn’t understand
>how people where getting such high cut rates. Don't know much about it, back
>to the books.
>
>
>

IPM is machine movement in inches per minute. So, it doesn't apply
specifically
to rapid traverse or cutting feedrates. And, there are a lot of
"wanna-be's" who
want to brag about their 400-600 IPM rapid feeds, even though they are
cutting
one piece at a time at 5 IPM. I can get 120 IPM on my machine, but I rarely
ever go past 45 IPM, for safety reasons. And, when I DO exceed that, I
often
have to duck as broken-off end mills go flying across the shop!

Jon