3 New chipbreaker designs improve machining stability Finishing to medium machining: SQ Chipbreaker Extended tool life and improved efficiency for mid-range to finishing applications in heat-resistant alloys Double-sided 4-Corner design SQ chipbreaker benefits Reduced temperature at the cutting edge Extended tool life reduces burring Extended tool life and efficiency improvements Special rake face design decreases cutting edge temperature Optimal design achieved with simulation technology Slant cutting edge Inclined in negative direction Effective for burr suppression and reducing notching Simulation of edge-temperature comparison (Internal evaluation) SQ chipbreaker Conventional B Cutting conditions: Vc = 40 m/min, ap = 1.0 mm, f = 0.15 mm/rev, CNMG120408 Type, dry, Workpiece: Nickel-based superalloy The newly developed chipbreaker reduces temperature at the cutting edge, thereby improving tool life and machining efficiency in semi-finishing applications. ap (mm) Applicable chipbreaker range (ap Indicates radial depth of cut per side) 3 (CNMG12 type) 2 1 SQ 0 0.1 0.2 0.3 0.4 f (mm/rev) Radial Force (N) Cutting force comparison - radial force (Internal evaluation) 300 SQ chipbreaker Competitor E Competitor F 200 100 Wear (mm) Wear resistance comparison (Internal evaluation) 0.6 SQ chipbreaker Machining time: 5 min 0.5 (PR005S) Competitor E Competitor F Competitor F could only reach 3.6 minutes SQ chipbreaker (PR005S) 0.4 0.3 Competitor E 0.2 0.1 Competitor F 0 0.2 0.4 0.6 0.8 1.0 1.2 0 2 4 6 8 10 ap (mm) Cutting time (min) Cutting conditions: Vc = 40 m/min, f = 0.15 mm/rev, wet, CNMG120408 type Workpiece: Nickel-based superalloy Cutting conditions: Vc = 40 m/min, ap = 1.0 mm, f = 0.20 mm/rev, wet, CNMG120408 type Workpiece: Nickel-based superalloy 2
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