What tools do you need to complete your project?

This allows you to optimize and expand your product range and continue to respond to user needs and requirements. At the Paul Horn, the precision tool manufacturer from Tübingen, Germany, a number of innovative solutions were recently presented again. We highlight the further development of the form bore system 117, the new geometry FB for smoothing inserts and the expansion of the range of groove and cut-off cutters.

With the further development of the form boring system 117, Horn now also offers the possibility of drilling in solid material. The profiled tools offer economic advantages in series production and reduction of tooling costs in drilling with a large diameter range. Based on the tool system 117, Horn offers profiled cutting plates to customer specifications for use with turning and milling machines with diameters from 16 mm. The patented precise arrangement of the cutting plates guarantees high round and flat run precision and changeover accuracy in the µm range. The precisely ground cutting edges ensure high precision with a tolerance of up to 0.02 mm and high surface quality. The tool system is available in mold widths of 16, 20 and 26 mm. The desired special shape is precisely ground. The forming depth is tmax = 9, 12 and 13.5 mm. The maximum mold width is 26 mm. The coating is specially selected for each application and is available for the material groups P, M, K and N. The round shank holders are available as standard with the shank diameters 16, 20 and 25 mm and the design types A and E. In addition, Horn offers special holders with more support for the cutting plates. All variants are equipped with an internal coolant supply.

New geometry for smoothing inserts

The new FB geometry provides a solution for the smoothing of inserts. With the standardization of the special cutting geometry, Horn is responding to users' wishes for even better surface qualities on the flanks and groove bottoms of inserts. This geometry has already been successfully used for some time in the manufacture of inserts for seals and shaft seals. High surface qualities are easily possible when smoothing even under unstable conditions. For the fine machining of external inserts, the geometry is available as a standard tool for the systems 224, 229, S34T, 315 and 64T, for internal machining for the insert systems 105, 108, 111, 114 and 216. Other cutting plate types are available quickly as special tools and through the Greenline system.

Expansion of groove and cut-off cutters

Finally, Horn now offers the tool bodies of the M310 milling system with internal coolant supply. This increases the tool life of the changeover cutting plates used. In addition, when groove milling, this also ensures higher precision because no heat from the shear zone is transferred to the part. In addition, the flushing effect of the cooling lubricant, combined with the geometry of the cutting surfaces, prevents stuck chips in deep grooves. Horn offers the groove and cut-off cutters in two variants: as a groove cutter with diameters from 50 to 63 mm as well as a push-on cutter with diameters from 63 to 160 mm, each with cutting widths from 3 to 5 mm. The type S310 carbide inserts with three cutting edges are bolted to the left and right of the milling cutter body, allowing for good distribution of cutting forces. In addition to other geometries for use with different materials, Horn is also expanding the cutting plates to include a geometry for milling aluminum alloys. The range of milling systems M101 and M383 is also being rounded out. For the tool M101, insert plates of the type S101 with a cutting width of 2.5 mm are available from stock, and new insert plates with an 8° chamfer on the front face are available especially for cut-off milling. For the system 383, Horn is expanding the body variants with diameters of 125 and 160 mm.