RECOMMENDED CALCULATIONS
When Using Ball Nose Copy Milling Cutters
I.S.O
CODE
MATERIAL GRADE SURFACE
SPEED
m/min
FEED / TOOTH
OPERATION (fz mm)
I II III
P Plain carbon steel - Free cutting steel T40/T60 200 0.12 0.2 0.25
Structural alloy steel. - Cast steel T40/T60 160 0.12 0.18 0.25
Heat treatable steel, medium strength. - Case hardening steel. T40/T60 160 0.12 0.18 0.25
Stainless steel, ferritic martensitic T40/T60 130 0.12 0.18 0.27
Heat treatable steel, high strength. - Nitriding steel - Tool steel. T40/T60 130 0.1 0.16 0.2
M Stainless steel austenitic T40 240
(80)
0.1 0.12 0.15
K Aluminium alloys, long chipping K10 900 0.2 0.3 0.4
Copper alloys, long chipping. - Pure metals, soft. - Thermoplastics K10 250 0.15 0.25 0.3
Grey cast iron T60 >200 0.15 0.25 0.35
Alloyed grey cast iron T60 >200 0.12 0.2 0.25
Nodular cast iron T60 <200 0.15 0.2 0.3
Malleable cast iron T60 160 0.12 0.2 0.25
Magnesium alloys K10 200 0.12 0.2 0.25
Titanium alloys, medium strength K10 80 0.15 0.2 0.25
Nickel based alloys, medium strength T60 60 0.2 0.25 0.3
Aluminium alloys, short chipping K10 250 0.15 0.2 0.3
Copper alloys, short chipping T60 250 0.12 0.2 0.25
Heat resistant nickel based alloys, high strength T60 40 0.2 0.25 0.3
Titanium alloys, high strength K10 60 0.12 0.2 0.3
Chilled cast iron T60 60 0.12 0.15 0.2
Duroplastics K10 300 0.15 0.2 0.3
  
OPERATION ROUGHING FINISHING
I II III
ap= 0.5.d¹
1.d
>0.5.d¹
0.2.d - 0.5.d¹
0.2.d - 0.5.d¹
0.2.d - 0.5.d¹
< 0.2.d¹
< 0.2.d¹
0.2.d¹ - 0.5
< 0.2.d¹
> 0.5.d¹
< 0.2.d¹
ae=
Speeds to use for varing depths of cut 1 x rpm
1.1 x rpm 2 x rpm 1.3 x rpm 1 x rpm
If several values are valid please choose the smallest one.
Theoretical surface roughness
 
G22

RECOMMENDED CALCULATIONS FOR USING BALL NOSE COPY MILLING CUTTERS

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