Paul Horn GmbH expands the DA milling system for corner, face, and plunge milling. With the DA65 variant, the system offers a larger cutting insert compared to the existing DA62. This allows for higher axial cutting depths during the process. Horn relies on a six-edged indexable insert. The cutting insert can be used on both sides and has three axial and radial cutting edges on each side. A large core cross-section with maximum cutting edge length is the striking feature of the precision-sintered cutting insert in trigon shape. Despite a negative insert angle, the cutting edge design results in a positive cutting geometry, leading to a smooth cut. The six cutting edges per indexable insert result in a good cost-to-cutting-edge ratio.
The DA65 system can be used as a roughing and finishing system. In the tests conducted, the milling system achieved surface finishes that meet market requirements. The choice of axial and radial angles has demonstrated a lower torsional moment and reduced lateral load on the spindle compared to previous systems. This allows the system to be used on machines with lower power and unstable environmental conditions. Another advantage of the chosen axial angle is the effective chip removal, especially during helical plunge operations.
The cutting edge shape generates an exact 90° corner angle with a maximum cutting depth of 7 mm. The patented indexable inserts are available with corner radii of 0.8 mm and 1.2 mm. The proven carbide substrate SA4B is used. This substrate is suitable as an all-rounder for milling steel, stainless steel, cast iron, and aluminum. Furthermore, the cutting inserts are also available in the grades SC6A and IG6B for use in other material groups.
The basic bodies are available as shank mills in diameters of 32 mm and 40 mm. In these variants, the milling tools are equipped with two or three cutting inserts. As face mills, the tools are available in cutting circles of 50 mm, 63 mm, 80 mm, and 100 mm. The number of teeth varies depending on the diameter: four, five, seven, nine, and eleven. All basic bodies feature targeted internal cooling at the cutting point. The DA65 milling system ensures process reliability across a wide range of applications, high performance capability, and economic benefits for the user.
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