Greg Selle
Plastic
- Joined
- May 16, 2021
I can’t seem to understand how calculate speeds. I normal use HSS endmills. And materials I cut are normally aluminum and sometimes SS.
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Bridgeport speeds
- Thread starter Greg Selle
- Start date
- Replies 2
- Views 836
JS
Stainless
- Joined
- May 5, 2005
- Location
- Republic of Arizonia
Machinery hand book list material recommended starting points for surface feet per minute and feed rates per tooth.
Example
30 fpm / ( .5 end mill x .26179) = 229 rpm
(4 teeth x .002 feed per tooth)x 229 = 1.8 inches per minute
Assuming your cutting a slot in practice it’ll be less then that...
Example
30 fpm / ( .5 end mill x .26179) = 229 rpm
(4 teeth x .002 feed per tooth)x 229 = 1.8 inches per minute
Assuming your cutting a slot in practice it’ll be less then that...
