Page 471 - Iscar

USER GUIDE

GRADES for APPLICATIONS and MATERIALS
ISO P ISO M ISO K ISO N ISO S ISO H
1 - 11 12 - 13 14 15 - 20 21 - 28 31 - 37 38 - 41 MILLING INSERTS
Stainless Steel
Austenitic
Stainless Steel & Duplex Hard Steel
Material Ferritic & (Ferritic- High Temp. & Hardened
groups Steel Martensitic Austenitic) Cast Iron Nonferrous Alloys Cast Iron
Hard IC808 (908) IC808 (908) IC808 (908) IS8 ID5 IC808 (908) IB55
IC30N ID8 IC08 IB85
IC4050 IC380 IC4100 (5100) IC380
IC5400 IC830 (928) DT7150 IC07 IC928 (830) IC808 (908)
MILLING IC830 (928) IC830 (928) IC330 (328) IC810 (910) IC08 IC328 (330)
Indexable IC330 (328) IC330 (328) IC28 IC28 IC28
Coolant Tough N N Y N Y Y N
First choice

Milling Calculations

Vc [m/min] Cutting speed
D [mm] Tool diameter
N fz N [RPM] Spindle speed
Vf [mm/min] Feed speed
κ fz [mm/tooth] Feed per tooth
N n
b Z Number of teeth
ap fN [mm/rev] Feed per revolution
Vf hm
Vf Q [cm /min] Metal removal rate
3
D fz
ap [mm] Depth of cut
b [mm] Width of cut
Th [min] Machining time
Lw [mm] Machining length
2
Kc [N/mm ] Specific cutting force
Calculations Kc1(1) [N/mm ] Specific cutting force
2
Cutting speed Vc = π*D*N [m/min] hm [mm] for 1 mm2 chip section
Average chip thickness
1000min mc(1) Chip thickness factor
Spindle speed N = Vc*1000 [rev/min] k [degrees] Cutting edge angle
π*D
P [kW] Machining power
Table speed Vf = fz*Z*N [mm/min] h Machine efficiency
Vn P = Pc + Pm
Feed per tooth fz = N*Z [mm/tooth] P - Total Machining Power
Pc - Net Power=Cutting Power
Feed per revolution fN = fz*Z [mm/rev] Pm - Motor Power (while not cutting)
3
Metal removal rate Q = ap*b*Vf [cm /min]
1000
L
w
Machining time Th = [min]
Vf
Specific cutting force Kc = Kc1*hm -mc Values for Motor Power PM
Max. Machine Power (kW) Motor Power Pm (kW)
Average chip thickness in hm ≈fz* [mm] 5.5 0.4
√
b
shoulder milling for b/D≤0.1 D 7.5 0.4-0.6
Average chip thickness in hm = ( sink 180 b fz ) [mm] 11.0 1.0
* *
*
15.0
1.5
shoulder milling for b/D>0.1 π D arcsin ( b/D) 18.0 2.2
* *

( a p b V f k c ) 22.0 2.5
* * *
Machining power P = 7 [kW]
*
*
6 10 h Motor Power Pm has a value of approximately
(1) See page 1006 7 to 12% of Maximum Machine Power
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