Цельные твердосплавные микросверла линейки KenDrill Micro Kennametal 2025 - страница 13

OPERATIONAL GUIDANCE 3. Completing the Hole and Drill Retraction • For blind holes, when the hole is at final depth, retract about 0.5-1.0mm (.0197-.0394") • Reduce spindle speed to 500-1000 RPM and feed out to the pilot hole depth at 1000-2000mm/min (39.4-78.7 IPM) • Switch spindle to counterclockwise rotation at 500-1000 RPM, turn off high-pressure coolant, and feed out at 1000-2000mm/min (39.4-78.7 IPM) • For through holes, reduce feed rate to 50% for breakthrough to protect the cutting edge from damage • Reduce spindle speed to 500-1000 RPM and feed out to the pilot hole depth at 1000-2000mm/min (39.4-78.7 IPM) • Switch spindle to counterclockwise rotation at 500-1000 RPM, turn off high-pressure coolant, and feed out at 1000-2000mm/min (39.4-78.7 IPM) kennametal.com 13