Page 548 - ISCAR(MILLINGCATALOG 38_2021)

USER GUIDE
MILLING INSERTS GRADES for APPLICATIONS and MATERIALS ISO M 15 - 20 21 - 28 High Temp. & Hardened

ISO H
ISO P
ISO S
ISO N
ISO K
38 - 41
12 - 13
1 - 11
31 - 37
14
Material groups
Hard Steel
Stainless
Stainless Steel
Steel Ferritic Austenitic & Duplex Cast Iron Nonferrous
Steel
Alloys
(Ferritic-Austenitic)
& Martensitic
Cast Iron
Harder
IC5400
IS8
IB55
IC840
IC30N
IB85
IC808
IC840
IC380
IC5500
(908) IC808 (908) IC808 (908) IC5100 ID5 IC808 (908) IC30N
(4100)
IC810 IC830 (928) DT7150 IC04 IC5820** IC808 (908)
(910)*
MILLING
Indexable IC830 IC830 (928) IC330 (328) IC810 IC08 IC882 DT7150
(928) (910)
IC845 IC330 (328) IC882 IC28 IC330 (328)
Coolant Tougher N N Y N Y Y N
First choice
* for steel castings
** for milling with high pressure coolant (HPC) supply
Milling Calculations
N fz Vc [m/min] Cutting speed
D [mm] Tool diameter
κ
N n N [rev/min] Spindle speed
b Vf [mm/min] Feed speed
ap
Vf hm
Vf fz [mm/tooth] Feed per tooth
D fz
Calculations Z Number of teeth
Cutting 4 Vc = π ∙ D ∙ N [m/min] fN [mm/rev] Feed per revolution
1000min
3
[cm / min] Metal removal rate

Q
Spindle speed N = Vc ∙ 1000 [rev/min] ap [mm] Depth of cut
Width of cut
b
[mm]

π ∙ D
Th [min] Machining time
Feed speed Vf = fz ∙ Z ∙ N [mm/min] Lw [mm] Machining length
2
Feed per tooth fz = Vn [mm/tooth] Kc (1) [N/mm ] Specific cutting force 2
N ∙ Z
Specific cutting force for 1 mm chip section
[N/mm ]
2
Kc1
Feed per revolution fN = fz ∙ Z [mm/rev] hm [mm] Average chip thickness
mc (1) Chip thickness factor
Metal removal rate Q = ap ∙ b ∙ Vf [cm /min]
3

1000 k [degrees] Cutting edge angle
P [kW] Machining power
Machining time Th = Lw [min] h Machine efficiency
V f P = Pc + Pm
Specific cutting -mc 2 P - Total Machining Power
force Kc = Kc1 ∙ hm [N/mm ]
Pc - Net Power=Cutting Power
Average chip Pm - Motor Power (while not cutting)
thickness in hm ≈ fz ∙ √ b (1) See page 726
shoulder milling D [mm] Values for Motor Power Pm
for b/D≤0.1
Max. Machine Power [kW] Motor Power Pm [kW]
Average chip 5.5 0.4
thickness in (sink ∙ 180 ∙ b ∙ fz) 7.5 0.4-0.6

shoulder milling hm = π ∙ D ∙ arcsin (b / D) [mm] 11.0 1.0
for b/D>0.1 15.0 1.5
18.0 2.2
( ap ∙ b ∙ Vf ∙ kc )
Machining power P = 6 ∙ 107 ∙ h [kW] 22.0 2.5

Motor Power Pm has a value of approximately 7 to 12% of Maximum
Machine Power
546 ISCAR