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Endmills - Technical Info
Endmills
Tech Info -
Ball Nose Endmill Adjustments
3A>LI>>=L:G=?>>=LH?;:EEGHL>>G=FBEELFNLM;>:=CNLM>=MH>GLNK>IKHI>KMHHEEB?> =CNLMF>GML
:K>;:L>=HGMA>:FHNGMH?MHHE>G@:@>F>GM
=CNLMF>GMLFNLM;>F:=>MH=>M>KFBG>MA>>??><MBO><NMMBG@=B:F>M>K:G=MH:=CNLM?HK:QB:E<ABIMABGGBG@
%HEEHPMA>L>LM>IL
If the depth of cut (ADOC) is <50% of the tool diameter:
STEP 1: 
4L>LI>>=:G=?>>=O:EN>L?HKLEHM<NML?KHFMA>
LI>>=:G=?>>=<A:KML?HKMA>:IIKHIKB:M>F:M>KB:E
:G=MHHE=B:F>M>K
-HM>,:D>:G:==BMBHG:E:=CNLMF>GMNLBG@MA>
<A:KM;>EHPB?MA>MHHEIKHC><MBHG>Q<>>=LQMA>
MHHE=B:F>M>K
STEP 2: 
#>M>KFBG>MA>>??><MBO><NMMBG@=B:F>M>K#>H?MA>
>G=FBEE;:L>=HGMA>:QB:E=>IMAH?<NM3A>>??><MBO>
<NMMBG@=B:F>M>KPBEE;>NL>=MHF:D>;HMALI>>=:G=
?>>=:=CNLMF>GML
%HK>:LRK>?>K>G<>NL>MA><A:KM;>EHP
STEP 3: 
":E<NE:M>LI>>=;:L>=HGNLBG@MA>>??><MBO>
<NMMBG@=B:F>M>K4L>MA>LM:G=:K=2%,MH1/,
<HGO>KLBHG?HKFNE:2N;LMBMNM>MA>>??><MBO><NM
MBG@=B:F>M>K#>?HKMA>:<MN:EMHHE=B:F>M>K
#
STEP 4: 
":E<NE:M>MA>:=CNLM>=?>>=K:M>;:L>=HGMA>
>??><MBO><NMMBG@=B:F>M>K:G=MA>:QB:E<ABIMABG
GBG@?HKFNE:
STEP 5:3A>G>P?>>=K:M>BL<:E<NE:M>=
ZH??ENM>L
D <MN:EMHHE=B:F>M>K
De$??><MBO><NMMBG@=B:F>M>K
IPM(G<A>LI>KFBGNM>
RPM1HM:MBHGLI>KFBGNM>
SFM2NK?:<>?>>MI>KFBGNM>
IPT%>>=K:M>?KHF<A:KM?HKLEHMFBEEBG@
IPT adj =CNLM>=<ABIEH:=I>KMHHMA?K:<MBHG:E
RPM = (SFM x 3.82) / De
IPTadj = (D x IPT) / De
IPM = RPM x (Z x IPT adj)
Projection Speed Adj Feed Adj
> 2.5 to 3 x D SFM x .95 IPT x .95
> 3 to 4 x D SFM x .90 IPT x .90
> 4 to 5 x D SFM x .80 IPT x .80
> 5 to 6 x D SFM x .70 IPT x .70
Depth of Cut
(ADOC)
1/8 1/4 3/8 1/2 3/4 1
Depth De Depth De Depth De Depth De Depth De Depth De
10% of tool diameter .013 .075 .025 .150 .038 .225 .050 .300 .075 .450 .100 .600
20% of tool diameter .025 .100 .050 .200 .075 .300 .100 .400 .150 .600 .200 .800
30% of tool diameter .038 .115 .075 .229 .113 .344 .150 .458 .225 .687 .300 .917
40% of tool diameter .050 .123 .100 .245 .150 .367 .200 .490 .300 .73 .400 .980
50% of tool diameter .063 .125 .125 .250 .186 .375 .250 .500 .375 .7500 .500 1.000
3HHEL?HNG=HGI:@>L
!:EE-HL>U$??><MBO>#B:F>M>KY
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#PA>GF:DBG@LA:EEHP
<NMLPBMA?NEEK:=BNL
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