Общий каталог Sumitomo 2019 - 2020 - страница 894

DrillingSolidIndexableIndexableHead TypeInsert TypeReamersBrazedOthers 180° Flat MultiDrills MDF Type ■ General Features The flat multidrill MDF type is a solid carbide drill that can be used for various applications, including high-efficiency spot facing and drilling in inclined and curved surfaces. J ■ Features and Applications ● Suited to various types of drilling thanks to a point angle of 180° Can be used for high-efficiency spot facing, drilling in non-horizontal surfaces such as inclined and cylindrical surfaces, and interrupted Improves drilling stability drilling. Also reduces burrs at the hole exit. by ensuring web thickness ● Improves machining stability Achieves high rigidity by employing RS THINNING, which ensures thick web at the bottom. ● Excellent chip evacuation Achieves excellent chip evacuation thanks to the wide chip pocket and high-quality rake face shape. ● Excellent cutting edge strength Achieves excellent cutting edge strength through optimised cutting edge design. ●Long types available Overhang lengths up to L/D=10 can now be handled. ●Types with oil hole available Coolant can now be supplied internally. This enables deeper drilling. ■ Reduction of Burrs at Hole Exit MDF Type Conventionalgeneral-purpose drillWork Material: SCM415 Tool: MDF 0500S2D (ø5.0mm 2D) Cutting Conditions: vc=65m/min, f=0.12mm/rev, H=10mm, 150 holes, Wet Machine: Vertical machining centre (BT40) Reduces exit burrs by half Height of burr: 0.18mm Height of burr: 0.44mm Burrs at Hole Exit compared with general-purpose drills Flat MultiDrill MDF Type Conventional general-purpose drill ■ Machining Applications 1 2 3 4 High-ef ciency spot facing Hole expansion drilling Drilling in non-horizontal surface Interrupted drilling (inclined surface, cylindrical surface, etc.) 5 6 7 8 MDF Type Conventionalgeneral-purpose drill Long Type Long Type *Prepared hole with same *Prepared hole with same diameter recommended diameter recommended Cross drilling Pre-tap hole drilling in thin sheets Spot facing in deep positions Avoids interference with work material J34