Modular carbide drilling system

Modular carbide drilling system

October 4, 2017

Kennametal Inc.

The strength and versatility of the KSEM modular drill system is combined with the ease of use and low feed forces of its smaller companion drill, KenTIP.

The KenTIP FS, a 6mm to 26mm, 1.5xD to 12xD modular drill is tough enough to compete with solid carbide drills across a wide range of materials, having a full solid carbide front, enabling it to withstand more heat and abuse.

The carbide tip fully covers and protects the steel holder from washing out, a fusion of solid carbide’s best characteristics together with the cost-effectiveness of indexable drilling tools.

The flutes are highly polished after final machining to improve chip evacuation and reduce wash out near the tip. Instead of two coolant holes, the KenTIP FS has two at the tip and two in the chip gullet directly behind the head to provide greater coolant volume, preventing chip packing while simultaneously drawing heat away from the cutting zone, prolonging tool life and improving hole quality.

The HPG geometry is available in a new, highly wear resistant carbide grade, KCP15A, designed especially for steel. The insert corners are protected with small chamfers to reduce chipping, and the margins are similarly reinforced, making the HPG geometry suitable for the cross holes and inclined exits encountered in hydraulics manifolds or the stacked plates used in heat exchanger production.

The HPL geometry has a split point designed to reduce cutting forces and break up long-chipping aerospace and medical alloys. It is available in KCMS15, a wear-resistant, fine-grain carbide with an anti-adhesive AlTiN coating that extends tool life.

For cast, ductile, and compacted graphite irons, the HPC geometry offers four margin lands and a radiused point that eliminates the exit chipping and cracking common with these materials, with a specially-designed chip gash that clears chips quickly in combination with the front coolant exits.

All three insert styles have 143° points, and specially-prepared, polished or honed edges for maximum tool life. A patented taper interface gives the KenTIP FS maximum rigidity and accuracy, with a retention lock that eliminates pullout, and its large bearing surface can withstand extreme torsional loads without pocket deformation. Since the full solid carbide insert has no mounting screw, there’s no risk of damage to the clamping mechanism from chip or workpiece contact.