Cutting data recommendations - Uddeholm Global

1 Cutting DATA RECOMMENDATIONSU ddeholm CorraxMachining data are always dependent on the actual operation, the machine tool and the Cutting data used. The machining data given is this datasheet are general guidelines that may have to be adjusted to the actual conditions of a specific machining data formulaeTurningLegendvc= Cutting speed (m/min)n= Spindle speed (rev/min)f = Feed per rev (mm/rev)ap= Axial depth of cut (mm)D= Workpiece diameter (mm)Q= Material removal rate (cm3/min)Ra= Surface roughness ( m)re= Nose radius (mm)MillingLegendvc= Cutting speed (m/min)n= Spindle speed (rev/min)vf= Feed speed (mm/min)ap= Axial depth of cut (mm)ae= Radial depth of cut (mm)f = Feed per rev (mm/rev)z= Number of teethfz= Feed per tooth (mm/tooth)D= cutter diameter (mm)hm= Average chip thickness (mm)Q= Material removal rate (cm3/min)

2 DrillingLegendvc= Cutting speed (m/min)n= Spindle speed (rev/min)vf= Feed speed (mm/min)D= Drill diameter (mm)f = Feed per rev (mm/rev)Material removal rate Q v a fcp,()= cm / min3 Feed speed vf nf,()= mm / min3,0)mm(< =DaDafheezmSpindle speed nvDc,()= 1000 rev / min)min/cm(10003fepvaaQ =Feed per rev fvnf,()=mm / revCutting speed vDnmc,()= 1000/min)/min(1000mnDvc = Cutting speed vDnmc,()= 1000/minSpindle speed nvDc,()= 1000 rev / minrev/min)(1000 Dvcn = Surface roughness Rfrma,() 250 )mm/min(nfnzfzvf = =TurningUddeholm CorraxTurningCemented carbideHSSR oughingFinishing Cutting speed, vc (m/min)110-160160-21013-18 Feed, f (mm/rev)0,2-0,40,05-0,20,05-0,3 Depth of cut, ap (mm)2-40,5-20,5-3 Suitable gradesP20-P30 coated carbideP10 coated carbide or cermetRemarks:1.

3 Cutting fluid is For turning with interrupted cut or face turning of large workpieces use a thougher cemented carbide millingFace millingCemented carbideRoughingFinishing Cutting speed, vc (m/min)70-9090-110 Feed, fz (mm/tooth)0,2-0,40,1-0,2 Depth of cut, ap (mm)2-5-2 Suitable gradesP20-P40 coated carbideP10-P20 coated carbide or cermetRemarks:1. Use a milling cutter with a positive-negative or positive-positive Climb milling should generally be milling should generally be done with coolant. Square shoulder millingSquare shoulder milling with cemented carbideae = x Dae = x Dae = 1 x D Cutting speed, vc (m/min)90-13080-12070-110 Feed, fz (mm/tooth)0,25-0,30,15-0,20,1-0,15 Suitable grades P15-P40 coated carbideRemarks:1.

4 Climb milling should generally be Choose the cutter diameter (D) and the radial depth of cut (ae) so that at least two Cutting edges are engaged If the machine tool power is inadequate for the data given reduce the depth of cut, but do not reduce the millingUddeholm CorraxSlot millingAxial depth of cut, ap = 1 x DCutter diameter (mm)3 - 55 - 1010 - 2020 - 3030 - 40 Uncoated HSS 1-4) Cutting speed, vc (m/min)20-25 Feed, fz (mm/tooth)0,01-0,030,03-0,040,04-0,050,0 5-0,060,06-0,09 Coated HSS 1-4) Cutting speed, vc (m/min)35-45 Feed, fz (mm/tooth)0,02-0,040,04-0,050,05-0,060,0 6-0,070,07-0,10 Solid cemented Cutting speed, vc (m/min)60-100 carbide 5-8) Feed, fz (mm/tooth)0,006-0,010,01-0,020,02-0,04 Indexable insert 6-8) Cutting speed, vc (m/min)70-110 (cemented carbide Feed, fz (mm/tooth)0,06-0,080,08-0,100,10-0,12 inserts) Suitable gradesP20-P30 coated carbideSide milling For side milling the same Cutting speed as for slot milling canAxial depth of cut, ap = x D be used, but the feeds must be adjusted in order to obtain a suitable average chip factor for side millingDivide the cutter diameter with the radial depth of cut.

5 See in the chart below which correction factor, Cf, thiscorresponds to, and multiply the chosen feed in the table for slot milling with this :Tool:CC insertCutter diameter:D = 40 mmRadial depth of cut: ae = 2 mmD/ae = 40/2 = 20 Feed acc. to table slot milling = mm/toothCorrection factor acc. to chart: Cf = for side milling :fz = x = mm/toothRemarks: (slot and side milling )1. Climb milling is generally Use a cutter with chipbreaker when side milling with radial depths of cut, ae > When side milling with small radial depths of cut (ae) the Cutting speed can be increased by up to 15%.4. Use liberal amounts of Cutting It is recommended to use a TiCN coated cutter when milling with solid cemented carbide tools.

6 The axial depth of cut should not exceed the cutter diameter when slot Climb milling is generally When side milling with small radial depths of cut (ae) the Cutting speed can be increased by up to 30%.8. The radial run-out, at the Cutting edges, must be small and not exceed 10203040 cutter diameter / Radial depth of cut, D/aeCorrection factor, Cf502007-12-04 DrillingUddeholm CorraxDrillingDrill diameter (mm)1 - 55 - 1010 - 2020 - 3030 - 40 Uncoated HSS 1-2) Cutting speed, vc (m/min)13-15 Feed, f (mm/rev)0,05-0,100,10-0,200,20-0,300,30- 0,350,35-0,40 Coated HSS 1-2) Cutting speed, vc (m/min)13-15 Feed, f (mm/rev)0,05-0,100,10-0,200,20-0,300,30- 0,350,35-0,40 Indexable insert 3-4) Cutting speed, vc (m/min)180-200 (cem.

7 Carbide inserts) Feed, f (mm/rev)0,03-0,080,08-0,12 Solid cemented Cutting speed, vc (m/min)100-130 carbide 5-7) Feed, f (mm/rev)0,08-0,100,10-0,200,20-0,300,30- 0,35 Brazed cemented Cutting speed, vc (m/min)50-70 carbide 5-7) Feed, f (mm/rev)0,15-0,250,25-0,350,35-0,40 Remarks:1. The Cutting fluid should be ample and directed at the When drilling with short "NC drills" the feed may be increased by up to 20%. For extra long drills the feed must be Use insert grades in the range of ISO P20-P30. Under unstable conditions a tougher carbide grade should be used for the centre Use a high Cutting fluid pressure and flow rate for a good chip If machining with solid or brazed cemented carbide drills, a rigid set-up and stable working conditions are The use of drills with internal cooling channels is recommended.

8 7. Use a Cutting fluid concentration of 15-20 %.Tapping with HSSC utting speed, vc =7-9 m/minRemarks:1. Threading compound or Cutting oil gives a longer tool life than