Re: [CAD_CAM_EDM_DRO] Tool speed for different materials

Jon,

Thanks for the info. I am going to get my hands on a copy of the machinery
handbook and see if I can learn something.

Scott

----- Original Message -----
From: "Jon Elson" <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, April 12, 2002 1:50 PM
Subject: Re: [CAD_CAM_EDM_DRO] Tool speed for different materials


> Scott Hendershot wrote:
>
> > Where do I go to find what the rotational cutting speeds are for
different materials; ie aluminum, plastic, mdf
>
> You don't. You're looking at it wrong. "Rotational speed" (RPM) is not
the important
> thing, it is surface speed (SFPM). The optimum surface speed for a
combination of
> workpiece material and cutting tool material is often listed in tool
catalogs, manufacturer's
> literature, etc. You then have to calculate the RPM based on either
cutter diameter
> for milling-type work, or workpiece diameter for turning.
>
> RPM = SFPM / (tool diameter * Pi ) * 12
>
> Jon
>
>
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