speeds and feeds

[stevieboy]

Hi Guys,

I'm relatively new to the world of cnc machining and I'm also learning as I go along. I'm starting to use tipped tooling and I need to know how to work out the best speeds and feeds from the information given to me by the tooling supplier, Vc and Fz etc. Can anyone help.

[blackbeard52]

Here is a online calculator....however, these ratings do not take into account your machine rigidity or material you are cutting.

http://www.americanmachinist.com/Cal...eedsFeeds.aspx

hope it helps
Bob

[Bluesman]

Here is a habit I got into years ago, I got tierd of figuring it out based on the tool suppliers recomended SFM so I came up with this. Then I cane change the SFM at will to get optimum perfromance from the tool and not have to refigure the rst out.


O8315(T31 DRILL 14.06)
G0G17G21G40G49G80G90G94G98M11
#1=350(SFM)
#2=.006(FEED/TOOTH/REV-INCHES)
#3=.554(CUTTER DIA-INCHES)
#4=2(NUMBER OF FLUTES/TEETH)
#5=ROUND[[#1*12]/[#3*3.1416]](CALCULATED RPM)
#6=[[#4*#2*#5]*25.4](CALCULATED FEED MM/M)
#999=#6
IF[#1005EQ1]GOTO1100
M07
T#20

(L3 B315.0)
#519=7
M98P8705
M11
G90G0G54X-24.3Y0.B0.S#5M3(CALC RPM)
M10
G43H31Z69.89
G01Z67.0F[#6*.25](SLOW FEED TO START DRILL POINT)
G1H81Z68.89F#6 (CALC FEED)
G0H131Z41.56
G1Z42.56F#6


IT HELPS SAVE ME SOME TIME,
BLUESMAN