[expart]

Hi,

I'm very new to machining world, I'm trying to learn but I'm little bit confused..

Can anybody explain me whats the difference between SFPM and Cutting Feed from Feeds and Speeds? The same situation with Z-SFPM and Z-Feed..

Help in BobCad says:
"SFPM: This field indicates the Surface Feed Per Minute for X/Y and X/Y/Z tool motion as specified within the Cutting Conditions table.
Cutting Feed: This field displays the feedrate for X/Y and X/Y/Z tool motion for the selected tool."

wikipedia says: http://en.wikipedia.org/wiki/Speeds_and_feeds

My english is not very good by in my opionion those informations are slighty different.

Next question - I'm from "metric" world - is it common that also when I'm using milimeters everywhere I've got FPM not MPM?

Thanks in advance for all the answers and regards,
expart.

[expart]

Is it so obvious or I asked incorrect question?

[dlaery]

I am new to this also, but on surface speed a 1 inch diameter tool travels in revaluations more distance/surface than a .125 inch at the same rpm's. and the cutting feed is how fast the tool travels from x0 to x10.
I hope this helps.
I have used the G-Wizard (Google G-Wizard) that helps in selecting the cutting feed/feed rate and the rpms.