The Tritan-Drill-Uni for machining steels, stainless alloys and cast materials has been further developed and improved with regard to its tool geometry. Mapal’s newly created Tritan-Drill-Uni-Plus has a clear advantage over the previous drill for universal use. For instance, the finished groove profiles improve chip removal, while a wear-resistant coating increases tool life by up to three times. In shank form HA, the Tritan-Drill-Uni-Plus will be available in diameters from 4 to 20 mm, and in lengths of 5xD and 8xD as standard.
For use in aluminium and cast materials, Mapal is also unveiling its Tritan-Drill-Alu and Tritan-Drill-Iron. Thanks to novel tool geometries, the drills are said to achieve significant increases in feed rates and performance in their material groups. The Tritan-Drill-Alu has a polished groove profile matched to aluminium materials. Large chip spaces and a special, sharp cutting-edge preparation ensure optimum chip formation and reliable chip removal, reports the company.
For cast machining, the Tritan-Drill-Iron features a corner radius design that demonstrates greater stability and wear resistance.
Finally, the Tritan-Step-Drill-Steel was developed for stepped bores in tapped drill holes. Until now, only double-edge drills were available for these machining operations. The flat chisel edge in the centre of these tools causes oscillations that lead to a high load on the cutting edges and guiding chamfers, and thus to poor results with regard to circularity and cylindrical form. Tritan-Drill-Steel utilises triple edge technology that eradicates this issue.
The Tritan-Step-Drill-Steel has novel point thinning and finely ground chip flutes, so the chips are rolled tightly and broken. Chips are removed through the relatively small chip flute. The crowned cutting edge with a pulling cut from the centre to the cutting edge reduces the load and makes the drill robust. In conjunction with a wear-resistant coating, the machining results of the Tritan-Step-Drill-Steel outperform those of conventional double-edge step drills, says Mapal, offering double the feed rates and increased tool life.
