Wiper insert (Finishing-Medium) WE chipbreaker High productivity by reducing cutting time with higher feed machining. Stable chip control in a wide range of applications ap (mm) 3.0 2.0 WE 1.0 WF 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 f (mm/rev) 1 3 times higher feed rate than standard inserts with excellent surface finish Surface roughness Rz (μm) Surface finish comparison (In-house evaluation) 25 WE (Wiper edge) 20 Conventional A (Non-wiper edge) 15 10 Chipbreaker design Stable chip control in a wide range of applications Tough edge design Prevents chip entanglement Wiper edge geometry Excellent surface roughness during higher feed rates 5 Chipbreaker cross section Available for a wide range of 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 machining operations utilizing f (mm/rev) various angled steps Cutting conditions: Vc = 250 m/min, ap = 0.3 mm, f = 0.1 - 0.7 mm/rev, wet CNMG120408 type Workpiece: 34CrMo4 2 Reduce the number of machining paths from 2 paths to 1 path Cutting time (sec) Conventional machining process Cutting Time (2 paths): 22.1 sec Path 1 : Conventional tool (Non-wiper insert) Vc = 200 m/min, ap = 1.5 mm, f = 0.25 mm/rev, wet, CNMG120408 type Path 2 : Conventional tool (Wiper insert) Vc = 200 m/min, ap = 0.5 mm, f = 0.4 mm/rev, wet, CNMG120408 type Workpiece: 15CrMo4 (Size of material ø 40 × 150 L, cutting length 100 mm) Cutting time comparison (In-house evaluation) 22.1 65 % 8.5 Recommended machining process Cutting time (1 path): 8.5 sec Pass 1 : WE chipbreaker (Wiper insert) Vc = 200 m/min, ap = 2.0 mm, f = 0.4 mm/rev, Wet, CNMG120408 type Workpiece: 15CrMo4 (Size of material ø 40 × 150 L, cutting length 100 mm) WE Conventional tool A (Non-wiper edge) chipbreaker + Conventional tool B (Wiper insert) 3 Stable cutting at 0.7 mm/rev feed rate Fracture resistance comparison (In-house evaluation) WE 1st 2nd (Wiper edge) 3rd Conventional C 1st 2nd (No wiper) 3rd Competitor A 1st 2nd (Wiper edge) 3rd Competitor B 1st 2nd (Wiper edge) 3rd 0 2,000 4,000 6,000 8,000 Number of impacts 10,000 Cutting conditions: Vc = 150 m/min, ap = 1.0 mm, f = 0.7 mm/rev, wet CNMG120408 type (Insert grade: P25 grade), fracture resistance comparison (3 tests) Workpiece: 42CrMo4 (4 grooves in workpiece) 1
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