
Correction factors for specific type of cutter and operation C VcO
| x.v | |||
| Face mills withKAPR 45° – 60° and negative inserts (SHN06C,SHN09C,CHN09,…) | 1.15 | 1.00 | 0.85 |
| Face mills withKAPR45° and positive inserts (SOE06Z,SOE09Z,SOD05,...) | 1.15 | 1.00 | 0.85 |
| Shoulder mills withKAPR90° (SAD07D,SAD11E,SAD16E,SLN12,SLN16..) | 1.10 | 1.00 | 0.90 |
| Copy face mills (SRC10 - SRC20,SRD05 - SRD16,…) | 1.10 | 1.00 | 0.90 |
| Copy end mills (K2-PPH,K2-SLC,K2-SRC,K3-CXP…) | 1.10 | 1.00 | 0.90 |
| Disc mills (S90CN(XN),S90SN...) l | 1.10 | 1.00 | 0.90 |
| Shoulder mills with extended flute J(T)-CSD12X,J(T)-SAD11E,J(T)-SAD16E...) | 1.25 | 1.00 | 0.80 |
| Face mills for heavy duty (FSB22X,SPN13..) | 1.30 | 1.00 | 0.85 |
| Shoulder mills for heavy duty (FTB27X..) | 1.25 | 1.00 | 0.85 |
Correction factors for required durability C VcT
| minutes | 15 | 20 | 30 | 45 | 60 | 90 | 120 | |
| General machining operations (fine finishingup to roughing) | 1.23 | 1.13 | 1.00 | 0.89 | 0.81 | 0.72 | – | |
| Heavy machining operations (heavyroughing) | – | – | 1.23 | 1.13 | 1.00 | 0.89 | 0.81 |
Additional correction factors C VcA
| Machining environment | CVcA |
| Condition of the work-material(hard skin due to forgingor casting) | 0.70 |
| Unstable machining conditions | 0.85 |
| Common machining conditions | 1.00 |
| Stable machining conditions | 1.20 |
Correction factors for cutting speed when face and shoulder milling with <100% radial immersion C VcRCT
| ae DC | 5 % | 10 % | 15 % | 20 % | 25 % | 30 % | 40 % | 50 % | 60 % | 70 % | 75 % | 80 % | 90 % | 100 % |
| x.v | 1.48 | 1.35 | 1.27 | 1.22 | 1.19 | 1.16 | 1.11 | 1.08 | 1.05 | 1.03 | 1.00 | 1.00 | 1.00 | 1.00 |
| ae DC rrection | 5 % i factors t | 10 % i o compen | 15 % i sate for c | 20 % i hip-thinn | 25 % i ing when | 30 % i face and | 40 % i shoulder | 50 % i milling w | 60 % i ith | 70 % i % radial im | 75 % i mersion | 80 % i CfzRCT | 90 % | 100 % |
| x.f | 2.20 | 1.60 | 1.35 | 1.20 | 1.10 | 0.95 | 0.85 | 0.75 | 0.85 | 0.95 | 1.00 | 1.00 | 1.00 | 1.00 |
| x.f | 0.64 | 0.64 | 0.64 | 0.64 | 0.64 | 0.65 | 0.65 | 0.67 | 0.68 | 0.71 | 0.72 | 0.74 | 0.79 | 1.00 |
Resulting corrected cutting speed vcc kvG - coefficient of used material
vcc = vc . kvG . Cvco . CvcT . CvcA . CvcRTC . CfzRTC vc - starting speed from catalogue page