Re: [CAD_CAM_EDM_DRO] Re: Feed and Speed calculator, what the HECK?

onecooltoolfool wrote:

> James, that is great, thanks. Where did you get chip thickness and
> what is that?
> How do you change chip thickness in your spreadsheet?
> For carbide cutters in stainless I looked up 275 sfpm in Mach Hand.
> That gives closer to 5000 rpm. Still seems way to high for me.
> The cimco software is great, thanks
> I guess the real question is which surface speed to use.

Chip thickness is the same as "feed per tooth". You take Cutter RPM
x number of cutting teeth to get teeth per minute. So, at 5000 RPM, a
4-flute end mill will deliver 20,000 teeth/min against the workpiece.
if the feed was 20 IPM, that would be .001" feed per tooth.

Jon