CUTTING DATA RECOMMENDATIONS. Uddeholm Dievar HRC

Transcription

1 CUTTING ATA RECOMMENATIONS Uddeholm ievar Machiig data are always depedet o the actual operatio, the machie tool ad the cuttig data used. The machiig data give is this datasheet are geeral guidelies that may have to be adjusted to the actual coditios o a speciic machiig operatio.

2 Turig Cuttig data ormulae π Cuttig speed, vc ( m /mi) vc Spidle speed, π ( rev / mi) Material removal rate, Q vc ap ( cm / mi) 2 50 Surace roughess, Ra ( μ m) r ε Leged v c Q R a r e Cuttig speed (m/mi) Spidle speed (rev/mi) Feed per rev (mm/rev) Axial depth o cut (mm) Workpiece diameter (mm) Material removal rate (cm 3 /mi) Surace roughess (μm) Nose radius (mm) Millig e e h v c π ( m/mi ) vc ( rev/mi) π v z z m Q 2 ap ( ap ) (mm) z ap ae v ae ae ( mm ) < 0,3 (mm/mi ) 2 ap ( i ap ) + i (mm) (cm 3 /mi) Leged v c v a e z z e i h m Q Cuttig speed (m/mi) Spidle speed (rev/mi) Feed speed (mm/mi) Axial depth o cut (mm) Radial depth o cut (mm) Feed per rev (mm/rev) Number o teeth Feed per tooth (mm/tooth) Cutter diameter (mm) Eective cutter diameter (mm) iameter o isert (mm) Average chip thickess (mm) Material removal rate (cm 3 /mi) rillig π Cuttig speed, vc ( m /mi) vc Spidle speed, π ( rev / mi) Feed speed, v ( mm / mi) Feed per rev, v ( mm / rev) Leged v c v Cuttig speed (m/mi) Spidle speed (rev/mi) Feed speed (mm/mi) rill diameter (mm) Feed per rev (mm/rev)

3 Turig Turig Cemeted carbide Roughig Fiishig Cuttig speed, v c (m/mi) Feed, (mm/rev) 0,2-0,4 0,05-0,2 epth o cut, (mm) 2-4 0,5-2 Suitable grades P20-P30 coated carbide P10 coated carbide or mixed ceramic 1. Cuttig luid is recommeded. 2. For turig with iterrupted cut or ace turig o large workpieces use a thougher cemeted carbide grade. Uddeholm ievar Face millig Face millig Cemeted carbide Roughig Cuttig speed, v c (m/mi) Feed, z (mm/tooth) 0,2-0,3 0,1-0,2 epth o cut, (mm) 1-2 0,5-1 P20-P40 coated carbide P10-P20 coated carbide Suitable grades or cermet 1. Use a millig cutter with ositive-egative or positive-positive geometry. 2. Climb millig should geerally be used. 3. Millig should geerally be doe without coolat. I a high surace iish is required coolat may be used. 4. Cermets ca be o use whe iishig uder stable coditios. Square shoulder millig Square shoulder millig with cemeted carbide a e 0.1 x a e 0.5 x a e 1 x Cuttig speed, v c (m/mi) Feed, z (mm/tooth) 0,2-0,3 0,1-0,2 0,05-0,1 Suitable grades P15-P40 coated carbide 1. Climb millig should geerally be used. 2. Choose the cutter diameter () ad the radial depth o cut (a e ) so that at least two cuttig edges are egaged simultaeously. 3. I the machie tool power is iadequate or the data give reduce the depth o cut, but do ot reduce the eed.

4 Ed millig Uddeholm ievar Slot millig 1 x Cutter diameter (mm) Coated HSS 1-4) Cuttig speed, v c (m/mi) 5-10 Feed, z (mm/tooth) 0,01-0,03 0,03-0,04 0,04-0,05 0,05-0,06 0,06-0,09 Solid cemeted Cuttig speed, v c (m/mi) carbide 5-8) Feed, z (mm/tooth) 0,006-0,01 0,01-0,02 0,02-0,04 Idexable isert 6-8) Cuttig speed, v c (m/mi) (cemeted carbide Feed, z (mm/tooth) 0,06-0,08 0,08-0,10 0,10-0,12 iserts) Suitable grades P15-P40 coated carbide Side millig For side millig the same cuttig speed as or slot millig ca 1.5 x be used, but the eeds must be adjusted i order to obtai a suitable average chip thickess. Correctio actor or side millig ivide the cutter diameter with the radial depth o cut. See i the chart below which correctio actor, C, this correspods to, ad multiply the chose eed i the table or slot millig with this actor. Correctio actor, C Cutter diameter / Radial depth o cut, /ae Example: Tool: CC isert Cutter diameter: 40 mm Radial depth o cut: a e 2 mm /a e 40/2 20 Feed acc. to table slot millig 0.11 mm/tooth Correctio actor acc. to chart: C 2.8 Feed or side millig: z 2.8 x mm/tooth (slot ad side millig) 1. Climb millig is geerally recommeded. 2. Use a cutter with chipbreaker whe side millig with radial depths o cut, a e > 0.3 x. 3. Whe side millig with small radial depths o cut (a e ) the cuttig speed ca be icreased by up to 15%. 4. Use liberal amouts o cuttig luid. 5. It is recommeded to use a TiCN coated cutter whe millig with solid cemeted carbide tools. The axial depth o cut should ot exceed the cutter diameter whe slot millig. 6. Climb millig is geerally recommeded. 7. Whe side millig with small radial depths o cut (a e ) the cuttig speed ca be icreased by up to 50%. 8. The radial ru-out, at the cuttig edges, must be small ad ot exceed 0.03 mm.

5 Cavity millig Rough millig with roud carbide iserts ap 0,2 x i ap 0,15 x i ap 0,1 x i ap 0,05 x i i iameter o the isert Uddeholm ievar iameter o cutter, (mm) < >50 Cuttig speed v c (m/mi) Feed z (mm/tooth) -0, ,15-0,18 0,18-0, ,22-0,25 0,25-0,28 Cuttig speed vc (m/mi) Feed z (mm/tooth) -0, ,18-0,21 0,21-0, ,25-0,27 0,27-0,30 Cuttig speed vc (m/mi) Feed z (mm/tooth) -0, ,20-0,25 0,25-0, ,28-0,32 0,32-0,35 Cuttig speed vc (m/mi) Feed z (mm/tooth) -0, ,25-0,3 0,3-0, ,35-0,38 0,38-0,42 Rough millig with high eed cutters iameter o cutter, (mm) < >50 ap 70% o max 1) Cuttig speed vc (m/mi) Feed z (mm/tooth) -0, ,3-0,5 0,5-0, ,7-1,0 0,7-1,0 ap 50% o max 1) Cuttig speed vc (m/mi) Feed z (mm/tooth) -0, ,5-0,7 0,7-0, ,9-1,1 1,0-1,2 1) Per cetage o maximum depth o cut allowed (accordig to millig tool supplier) Semi iishig ad iishig millig with ballose cutters Semi iishig ap 5% o (Ø cutter) Fiishig ap 2% o (Ø cutter) iameter o cutter, (mm) < >12 Cuttig speed vc (m/mi) Feed z (mm/tooth) -0,08 0,08-0,1 0,1-0,12 0,12-0,14 0,14- Cuttig speed vc (m/mi) Feed z (mm/tooth) -0,1 0,1-0,12 0,12-0,14 0,14-0,16 0,16- Roud carbide iserts i Ballose cutter e e e 2 ap( i ap) + i (mm) e 2 ap ( ap ) ( mm) Remarks cavity millig: 1. ow millig strategy is recommeded 2. Recommeded cuttig speeds are at the eective cutter diameter ( e ) 3. Reduce the cuttig speed ad eed rate by 20% whe usig tool overhag >5x 4. The radial depht o cut (ae) should be maximum 70% o the eective cutter diameter ( e ) 5. A tough PV coated carbide grade with sharp edge geometry is recommeded

6 rillig Uddeholm ievar rillig rill diameter (mm) Coated HSS 1-2) Cuttig speed, v c (m/mi) 6-8 Feed, (mm/rev) 0,05-0,1 0,1-0,15 0,15-0,2 0,2-0,25 0,25-0,3 Idexable isert 3-4) Cuttig speed, v c (m/mi) (cem. carbide iserts) Feed, (mm/rev) 0,05-0, ,15 Solid cemeted Cuttig speed, v c (m/mi) carbide 5-7) Feed, (mm/rev) 0,08-0,10 0,10-0,18 0,18-0,26 0,26-0,3 Carbide tipped 5-7) Cuttig speed, v c (m/mi) Feed, (mm/rev) 0,12-0,2 0,20,28 0,28-0,35 1. The cuttig luid should be ample ad directed at the tool. 2. Whe drillig with short "NC drills" the eed may be icreased by up to 20%. For extra log drills the eed must be decreased. 3. Use isert grades i the rage o ISO P20-P30. Uder ustable coditios a tougher carbide grade should be used or the cetre positio. 4. Use a high cuttig luid pressure ad low rate or a good chip removal. 5. I machiig with solid carbide or carbide tipped drills, a rigid set-up ad stable workig coditios are required. 6. The use o drills with iteral coolig chaels is recommeded. 7. Use a cuttig luid cocetratio o %. Tappig with HSS Cuttig speed, v c 2-3 m/mi 1. Threadig compoud or cuttig oil gives a loger tool lie tha emulsio. 2. TiCN coated taps are recommeded. 3. Straight luted taps are recommeded or both through holes ad blid holes.