News | February 7, 2023

Micros With Maximum Tool Life And Process Reliability

Walter presents the new DB131 and DB133 Supreme solid carbide drills

The market for micro drills keeps growing. This is largely driven by the increasing desire for ever smaller technology as well as intricate components, such as those used in medical technology, watchmaking, the food and drink industry or mechanical engineering. Premium manufacturers such as Walter are responding to this trend by constantly expanding its range of cutting tools. The latest additions to this are the Walter DB133 and DB131 Supreme solid carbide drills. When used in combination with the DB131 Supreme fully coated micro pilot drill, the DB133 Supreme deep-hole drill in particular delivers impressive surface quality, tool life and process reliability. Specialist flute geometries are designed to optimize chip breaking to ensure that chips are kept short and therefore easy to remove. And in a wide range of materials too – for universal application.

Another integral factor in the solid carbide drill's performance, besides the geometry, is that the point angle and diameter tolerances (p7/h7) of both drills are tailored to one another so that the pilot drill can deliver the best possible results for the deep-hole drill. New Walter-developed processes, such as those for rounding the main cutting edges, increase the tool precision. This is particularly important in mould and die making, for instance, where fine tempering channels often have to be inserted close to the surface. After all, lateral "wandering" here (far more commonplace with HSS drills than with solid carbide drills) can result in extensive damage to the component; what's more they drill around six times faster than a gun drill, for instance. Both the DB131 Supreme and the DB133 Supreme are suitable for reconditioning. The solid carbide drills are available in diameters starting at 2 mm; Walter can also offer intermediate sizes for delivery within no more than 3 weeks via its Walter Xpress service.

Source: Walter Tools