Каталог Iscar сверла со сменной режущей частью 2022 - страница 146

MULTIFUNCTION TOOLS USER GUIDE User guide for DRG-MF User Guide for Turn-Mill Machines Coolant Pressure Insert Positioning • Apply above 6 Bar in 2.25xD tools (optimal pressure For drilling, cutting edge should be positioned in the center is above 10 Bar). of tool body. Radial Adjustment (off-center drilling) Correct Correct Wrong • Radial adjustment is dependent on drill diameter Cutting edge for drilling Optimization of Chip Shape    • Apply high-speed machining on low carbon steel Cutting edge • Produce thin chips, as most problems for drilling are caused by thick chips • Regulate chips produced by machining Setup medium-to-high carbon steel • If too tight, either increase speed and reduce feed, or reduce speed and increase feed • If too long, reduce speed and increase feed Tool Drill Dia. Dmin Dmax Core Ø Ø/2 DRG-MF-10 10 9.82 10.60 DRG-MF-12 12 11.82 12.60 DRG-MF-14 14 13.80 14.60 DRG-MF-16 16 15.76 16.50DRG-MF-202019.8020.60DRG-MF-252524.8025.80DRG-MF-323231.8033.00Check formation of core and its size after drilling 3 mm to6 mm depth. The diameter of the core should be within0.15-0.45 mm. Adjust Y-axis of the tool body by using the new adjustable Troubleshooting clamping unit (if available) or rotate the tool body 180°and secure it into a turret. Check the core again. Problem Solution Important: If a core does not appear, this can cause Chippingcaused bybuilt-up edge•Increase cutting speed•Reduce feed•Check tool and workpiece rigidity•Reduce tool and workpieceoverhangbreakage of insertvibration when drilling or turning.If the size of the core is over the recommendedsize, it will cause overload and vibration. • Reduce cutting speed Excessive • Use a harder grade (special) flank wear • Increase coolant flow Angular error • Check cutting edge height • Reduce cutting speed Edge • Use a harder grade (special) deformation • Increase coolant flow • Reduce feed • Reduce feed Poor surface • Increase coolant flow quality • Check tool and workpiece rigidity Warning: As the drill • Increase cutting speed goes all the way through • Increase feed a workpiece, it ejects a Long chips • Reduce cutting speed disc. For worker safety, • Increase coolant flow guards should be used. Tight chips • Reduce feed • Check tool and workpiece rigidity • Reduce tool and workpiece overhang • Reduce cutting speed Vibrations • Increase feed • Check cutting edge height • Reduce feed and increase cutting speed on very soft materials 144 ISCAR