3 Improved surface finish & minimized chattering Sharp cutting and superior resistance to chattering and burrs due to helical cutting edge and optimum axial rake design Surface of shoulder wall (In-house evaluation) MEW Competitor F (Positive cutter) Chatter Cutting conditions: Vc = 240 m/min, fz = 0.12 mm/t, ap × ae = 4 × 5 mm Cutter dia. ø20 mm, dry Workpiece : 17Cr3 Burr comparison with positive cutters (In-house evaluation) MEW Competitor G (Positive cutter) Burr Cutting conditions : Vc = 250 m/min, fz = 0.1 mm/t, ap × ae = 4 × 5 mm Cutter dia. ø20 mm, dry, workpiece : C50 Actual rake angle (In-house evaluation) MEW GM chipbreaker Competitor H (Negative) Competitor I (Positive) +20° +17° +17° 4 Improved toolholder durability and insert installation accuracy Contact face Wide contact face 5 Various chipbreakers for a wide range of applications 4 types of chipbreakers for a wide range of applications along with a large lineup of corner R (rε) for the GM chipbreaker Chipbreaker Application Shape GM General purpose SM Low cutting force GH Heavy milling NEW Non-ferrous AM metals aluminum Chipbreaker recommended applications (Shouldering) LOMU10type LOMU15type 10 MAX. ap 15 10 mm Chips (GM chipbreaker) MAX. ap 15 mm ap (mm) ap (mm) 10 6 6 Grooving 3 AM AM SM GM GH 3 SM GM GH 0 0.05 0.1 0.15 0.2 0.25 0.3 fz (mm/t) 0 0.05 0.1 0.15 0.2 0.25 0.3 fz (mm/t) Shouldering 2
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