Page 9 - MILLING-TOOLS-yg1

CASE STUDY CASE STUDY

CBN End mills Reference page : p.48 ~ p.53 i-Xmill End mills Reference page : p.55 ~ p.79

TEST I Total Milling Length : 240mm TEST I Ball Nose

Surface Roughness of Work Piece Cutting Condition (Ø1 x R0.5) Total Milling Length : 189m

Tool 2Flute, CBN Ball Nose End mill
Size Ø1×Ø4×0.6×50
JIS : SKD11(HRc60)
Work Material DIN : X155CrV-Mo12-1
WR : 1.2379
Vc(m/min) 94.25 Competitor A Total Milling Length : 189m
RPM (rev./min) 30,000
Feed(mm/min) 1,500
Milling Depth(mm) 0.01
Coolant Oil Mist
Machine Machining Center Competitor B Total Milling Length : 189m

Maximum Wear (㎛)

CBN (19.611㎛) Competitor A (32.249㎛) Competitor B

Tool was broken after Cutting Condition (Side Cutting)
100 meter milling
Tool i -Xmill Ball (XMB120C160) Vc(m/min) 80.42 Milling Depth(mm) Axial : 0.8 mm / Radial : 1.6 mm
Size Ø16×R8.0 RPM (rev./min) 1,600 Coolant Oil Mist
JIS : SKD61 (HRc50), Feed(mm/min) 390 Overhang YG-1, Competitor B : 48 / Competitor A : 56
Work Material DIN : X40GrMoV51(1.2344)
AISI : H13 Feed per tooth(mm/tooth) 0.12 Machine Machining Center

TEST II Total Milling Length : 750mm
Surface Roughness of Work Piece Cutting Condition (Ø2 x R1.0) TEST II Corner Radius

Tool 2Flute, CBN Ball Nose End mill Total Milling Length : 450m
Size Ø2×Ø4×1.8×50 250
JIS : SKD11(HRc60)
Work Material DIN : X155CrV-Mo12-1 200
WR : 1.2379
Vc(m/min) 188.50 150
RPM (rev./min) 30,000 Competitor A Total Milling Length : 450m
Feed(mm/min) 2,000
100
Milling Depth(mm) 0.01
Coolant Oil Mist

Machine Machining Center 50
Competitor B Total Milling Length : 450m
Maximum Wear (㎛) 0 0 150 300 450

CBN Competitor A
(57.630㎛) (100.314㎛)
Cutting Condition (Side Cutting)
Tool i-Xmill Corner Radius (XMR110A16020) Vc(m/min) 280 Milling Depth(mm) Axial : 3.0 / Radial : 0.2
Competitor B Competitor C Size Ø16×R2.0 RPM (rev./min) 5,570 Coolant Oil Mist
(71.471㎛) (170.200㎛) KS : KP4M (Mold steels HRc35) Feed(mm/min) 2,230 Overhang(mm) 70
Work Material DIN : 40CrMnNiMo8-6-4(1.2738)
AISI : P20+Ni Feed per tooth(mm/tooth) 0.2 Machine Machining Center

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