556 Каталог ISCAR 2017 Вращающийся режущий инструмент и инструментальная оснастка Стр.552

Каталог ISCAR 2017 Ротационный инструмент Стр. 552 0556 ENG Lab2u

INDEXABLE DRILLS USER GUIDE User guide for DRG-MF Coolant Pressure Apply above 6 Bar in 2.25xD tools (optimal pressure is above 10 Bar). Radial Adjustment (off-center drilling) Radial adjustment is depending on drill diameter Troubleshooting Optimization of Chip Shape Apply high speed machining on low carbon steel Produce thin chips, as most problems are caused by thick chips Regulate chips produced by machining 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 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 16.50 DRG-MF-20 20 19.80 20.60 DRG-MF-25 25 24.80 25.80 DRG-MF-32 32 31.80 33.00 Problem Solution Chipping caused by built-up edge Increase cutting speed. Reduce feed. Check tool and workpiece rigidity. Reduce tool and workpiece overhang. Excessive flank wear Reduce cutting speed. Use a harder grade (special). Increase coolant flow. Check cutting edge height. Edge deformation Reduce cutting speed. Use a harder grade (special). Increase coolant flow. Reduce feed. Poor surface quality Reduce feed. Increase coolant flow. Check tool and workpiece rigidity. Increase cutting speed. Long chips Increase feed. Reduce cutting speed. Increase coolant flow. Tight chips Reduce feed. Vibrations Check tool and workpiece rigidity. Reduce tool and workpiece overhang. Reduce cutting speed. Increase feed. Check cutting edge height. Reduce feed and increase cutting speed on very soft materials. User Guide for Turn-Mill Machines Insert Positioning For drilling, cutting edge should be positioned in the center of tool body. Correct Correct Wrong Setup Check formation of core and its size after drilling 3 mm to 6 mm depth. The diameter of the core should be within 0.15-0.45 mm. Adjust Y-axis of the tool body by using the new adjustable clamping unit (if it is available) or rotate the tool body 180° and secure it into a turret. Check the core again. Important: If a core does not appear, this can cause breakage of insert and vibration when drilling or turning. If the size of the core is over the recommended size, it will cause overload and vibration. A Warning: As the drill goes all the way through a workpiece, it ejects a disc. For worker safety, guards should be used. 552 ISCAR