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

I took the recommended chip thickness right out of the Taig manual. If I
remember correctly, it listed a range of 0.005 - 0.010" so I picked on the
low end. This value is one of the 3 blue user inputs (# of flutes,
diameter, and avg. chip thickness) in the spreadsheet. My understanding of
chip thickness is just the thickness of chip that is cut. I assume this
could be gathered imperically by picking up some chips and measuring the
thickness. Anyhow, to change it, just type in a new value over the old one
and the sheet will update with the new values.

I would probably go with the majority SFM (2 vs. mach handbook), but as
having no experience cutting stainless, I cannot offer a valuable opinion.
Perhaps someone with experience could comment.

James

----- Original Message -----
From: "onecooltoolfool" <joevicar3@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, April 17, 2002 3:08 PM
Subject: [CAD_CAM_EDM_DRO] Re: Feed and Speed calculator, what the HECK?


> 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.
> Joe V.