Kyocera - Каталог фрезерование 2017 ENG
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RAD-8 (MRW)
Recommended Cutting Conditions
Recommended Chipbreaker fz (ipt) Recommended Insert Grades (Cutting Speed Vc: sfm)
Recommended feed rate (standard value)
Workpiece MEGACOAT NANO CVD Coated Carbide
Material ROMU12 : D.O.C. = 0.118"
ROMU16 : D.O.C. = 0.158"
GM SM GH PR1535 PR1525 PR1510 CA6535
Carbon Steel - -
0.004~0.008~0.012 0.002~0.006~0.008 0.006~0.012~0.014 390~590~820 390~590~820
Alloy Steel - -
0.004~0.008~0.012 0.002~0.006~0.008 0.006~0.012~0.014 330~520~720 330~520~720
Mold Steel - -
0.004~0.006~0.010 0.002~0.005~0.008 0.006~0.008~0.012 260~460~590 260~460~590
Austenitic Stainless Steel - -
0.004~0.006~0.008 0.002~0.005~0.008 0.006~0.008~0.010 330~520~660 330~520~660
Martensitic Stainless Steel - -
0.004~0.006~0.008 0.002~0.005~0.008 0.006~0.008~0.010 490~660~820 590~790~980
Precipitation Hardened Stainless Steel - - -
0.004~0.006~0.008 0.002~0.005~0.008 0.006~0.008~0.010 300~390~490
Gray Cast Iron - - - -
0.004~0.008~0.012 0.006~0.012~0.014 390~590~820
Nodular Cast Iron - - - -
0.004~0.006~0.010 0.006~0.008~0.012 330~490~660
Ni-base Heat Resistant Alloy - -
0.004~0.005~0.006 0.002~0.004~0.006 0.005~0.006~0.008 70~100~160 70~100~160
Titanium Alloy - - -
0.004~0.005~0.006 0.002~0.004~0.006 130~200~260 100~160~230
Machining with coolant is recommended for Ni-base Heat Resistant Alloy and Titanium Alloy : 1st Recommendation : 2nd Recommendation
The figure in bold font is center value of the recommended cutting conditions. Adjust the cutting speed and the feed rate within the above conditions according to the actual machining situation.
Recommended feed rate is the reference value when D.O.C. is r/2 (0.118" for ROMU12, 0.158" for ROMU16).
For lower feed rates than the above conditions, the conversion factor in the following table is recommended.
Conversion Factor for Feed Per Tooth by Depth of Cut (D.O.C.)
Insert D.O.C. D.O.C. D.O.C. = 0.020" Conversion Factor for Feed Per Tooth D.O.C. = 0.158"
(Recommended) (Max.) D.O.C. = 0.039" D.O.C. = 0.079" D.O.C. = 0.118"
ROMU12 Type 0.118" or less 0.236" 2.1 1.5 1.1 1.0 -
(Standard)
ROMU16 Type 0.158" or less 0.315" 2.4 1.7 1.3 1.1 1.0
(Standard)
Calculation Example (ROMU12, Carbon Steel, GM Chipbreaker, D.O.C. = 0.039")
fz = 0.008 ipt
X =(Standard value for carbon steel and GM chipbreaker)
1.5 fz = 0.012 ipt
(Conversion factor for ROMU12 type, D.O.C. = 0.039") (Recommended feed rate)
RADIUS / BALL-NOSE Recommended D.O.C. : 0.118" or less for ROMU12, 0.158" or less for ROMU16 Y (Gap between insert corner-R)
J
Corner R Shape During Processing with MRW (See Fig.1)
Insert D.O.C. (Max.) X Y Insert Corner
ROMU12 Type 0.236" 0.118" 0.004"
ROMU16 Type 0.315" 0.158" 0.004" X (Recommended D.O.C.) D.O.C. (Max.)
Fig.1
When machining with larger D.O.C. than recommendd D.O.C. (X), there is a gap (Y) between the workpiece corner and insert corner R (r).
The above figure is an estimation. There is a ±0.008" variation depending on the cutting conditions.
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