Ball-nose / radius type cutters MRW How to mount an insert Fig. 1 Wrench Clamp screw 1. Be sure to remove dust and chips from the insert mounting pocket. 2. Clamp screw 1. Apply anti-seize compound on portion of taper and thread of clamp screw. 2. Attach the screw to the front end of the wrench. While lightly pressing the insert against Fig. 2 Purple grip the constraint surfaces, put the screw into the hole of the insert and tighten. (Ref. to Fig. 1) 3. Wrenches and clamp screws are "Torx Plus". 1. Fig. 2 wrench is for MRW-12. (Straight grip) Detail of shape The symbol means "Torx plus". 2. Fig. 3 wrench is for MRW-16. (T-shaped grip) Straight grip wrench for MRW-12 Please use a "Torx Plus" Wrench for tightening cramp screw. * If a "Torx" wrench (Fig. 4) is used to tighten, the screw head might become damaged and Fig. 3 Purple grip then the screw cannot be removed. 4. When tightening the screw, make sure that the wrench is parallel to the screw. Recommended Tightening torque, See spare parts table. Detail of shape 5. After tightening the screw, make sure that there is no clearance between the insert seat surface and The symbol means "Torx Plus". T-shaped grip wrench for MRW-16 the bearing surface of the toolholder or between the insert side surfaces and the constraint surface of the toolholder. If there is any clearance, remove the insert and mount it again according to the Fig. 4 Black grip grip above steps. T15 Detail of shape Detail of shape The symbol The symbol means means "Torx". Torx Wrench Torx wrench (Do (Do NOT NOT use useititfor for MRW) MRW) Case studies 12Cr Steel 12Cr Steel M Machining efficiency 1.2 times Same or longer tool life Economical double-sided insert Economical double-sided insert Milling • Turbine blade • Vc=270m/min • fz=0.278mm/t • Turbine Blade • Vc=250m/min • fz=0.16mm/t • ap=0.5~1.0mm ae=max.35mm • Dry • ap=2.0mm ae=5~30mm • Wet • MRW050R-12-6T-M (6 flutes) • ROMU1204M0ER-SM (CA6535) • MRW050R-12-5T-M (5 flutes) • ROMU1204M0ER-SM (CA6535) CA6535 Stable machining CA6535 Stable, available for further machining Competitor A Competitor B Unstable machining with large noise Unstable machining with large noise (Positive cutter) (Positive cutter) • MRW improved machining efficiency by 1.2 times with same tool life • MRW showed less damage on the cutting edge and reduced machining noise. compared with competitor A. • MRW has equal or longer tool life and cost advantage due to double sided inserts. • MRW has cost advantage due to double-sided inserts. (User evaluation) (User evaluation) Applications Facing Shouldering Contouring Plunging/Profiling * MRW type is not available for 3D machining such as plunging and profiling. M199