Общий каталог Sumitomo 2018 - 2019 - страница 423

MDF Type Coated Carbide Drills for Spot Facing

General Features

The flat MultiDrill MDF type is a solid carbide drill that can be used

for various purposes including high-efficiency spot facing and dril-

ling in inclined and curved surfaces.

Advantages

Can be used in a variety of drilling applications thanks to its point angle of 180°

Applicable to high-efficiency spot facing, drilling in non-horizontal surfaces such as inclined and Improves

cylindrical surfaces and interrupted drilling. It also reduces burrs at hole exits. drilling stability

by ensuring

Improved machining stability web thickness.

Achieves high rigidity by employing RS THINNING, which ensures web thickness on the

bottom face.

Excellent chip evacuation performance

Achieves excellent chip evacuation thanks to its wide chip pocket and high-quality rake face

shape.

Excellent cutting edge strength

Achieves excellent cutting edge strength thanks to optimized cutting edge design. THINNING

Expanded lineup of long type

An expanded lineup of long type drills with diameters between Ø3,0 and Ø20,0mm that are

capable of drilling with an overhang length up to L/D=10.

Expanded lineup of types with oil hole

Supports internal coolant. For deeper drilling (3D, 5D).

Reduction of Burrs at Hole Exit

Burrs at hole exit compared to general-purpose drills Burr height: 0,18mm Burr height: 0,44mm

Flat MultiDrill MDF type Conventional general type Applications

High-efficient spot facing Hole expansion drilling

MDFMDF Conventional general purpose drill

Drilling in non-horizontal surfaces Interrupted drilling (such as inclined and cylindrical) Long Type Long Type8

Cross drilling Pre-tap hole drilling in thin Deep spot facing Avoiding interference with

sheets work materials