For steels
For stainless steels
For cast iron
For non-ferrous metal
For difficult to cut material
For hardened material
Input the values.
Pc (kW) : Actual Cutting Power
ap (mm) : Depth of Cut
ae (mm) : Cutting Width
vf (mm/min) : Table Feed per Min.
Kc (MPa) : Specific Cutting Force
η: (Machine Coefficient)
What is the cutting power required for milling tool steel at a cutting speed of 80m/min. With depth of cut 2mm, cutting width 80mm, and table feed 280mm/min by Φ250 cutter with 12 inserts. Machine coefficient 80%.
First, calculate the spindle speed in order to obtain feed per tooth.
n=1000vc÷πDC=(1000×80)÷(3.14×250)=101.91min-1
Feed per Tooth fz=vf÷(z×n)=280÷(12×101.9)=0.228mm/tooth
Substitute the specific cutting force into the formula.
Pc=(2×80×280×1800)÷(60×106×0.8)=1.68kW
Work Material | Tensile Strength (MPa) and Hardness |
Specific Cutting Force Kc(MPa) | ||||
---|---|---|---|---|---|---|
0.1 (mm/tooth) |
0.2 (mm/tooth) |
0.3 (mm/tooth) |
0.4 (mm/tooth) |
0.6 (mm/tooth) |
||
Mild Steel | 520 | 2200 | 1950 | 1820 | 1700 | 1580 |
Medium Steel | 620 | 1980 | 1800 | 1730 | 1600 | 1570 |
Hard Steel | 720 | 2520 | 2200 | 2040 | 1850 | 1740 |
Tool Steel | 670 | 1980 | 1800 | 1730 | 1700 | 1600 |
Tool Steel | 770 | 2030 | 1800 | 1750 | 1700 | 1580 |
Chrome Manganese Steel | 770 | 2300 | 2000 | 1880 | 1750 | 1660 |
Chrome Manganese Steel | 630 | 2750 | 2300 | 2060 | 1800 | 1780 |
Chrome Molybdenum Steel | 730 | 2540 | 2250 | 2140 | 2000 | 1800 |
Chrome Molybdenum Steel | 600 | 2180 | 2000 | 1860 | 1800 | 1670 |
Nickel Chrome Molybdenum Steel | 940 | 2000 | 1800 | 1680 | 1600 | 1500 |
Nickel Chrome Molybdenum Steel | 352HB | 2100 | 1900 | 1760 | 1700 | 1530 |
Austenitic Stainless Steel | 155HB | 2030 | 1970 | 1900 | 1770 | 1710 |
Cast Iron | 520 | 2800 | 2500 | 2320 | 2200 | 2040 |
Hard Cast Iron | 46HRC | 3000 | 2700 | 2500 | 2400 | 2200 |
Meehanite Cast Iron | 360 | 2180 | 2000 | 1750 | 1600 | 1470 |
Grey Cast Iron | 200HB | 1750 | 1400 | 1240 | 1050 | 970 |
Brass | 500 | 1150 | 950 | 800 | 700 | 630 |
Light Alloy (Al-Mg) | 160 | 580 | 480 | 400 | 350 | 320 |
Light Alloy (Al-Si) | 200 | 700 | 600 | 490 | 450 | 390 |
Light Alloy (Al-Zn-Mg-Cu) | 570 | 880 | 840 | 840 | 810 | 720 |
For steels
For stainless steels
For cast iron
For non-ferrous metal
For difficult to cut material
For hardened material
For finish cutting
For medium cutting
For rough cutting