Sharpening solid carbide tools to perfection


"When manufacturing rotary tools, whether these are diamond-tipped or solid carbide, the sharpening process plays the lead role. The reason is that it determines the tool's level of precision as well as its service life. For tool manufacturers and their customers, it is the definitive mark of quality," says Dr Stefan Brand, managing director of the Vollmer Group.

The new VGrind 160 can be used to manufacture solid carbide tools, by virtue of its kinematics and five optimally configured CNC axes. This enables it to deliver perfect interpolation with short travel distances in order to achieve maximum precision in the shortest time. 

Also new from Vollmer is the QXD 250, which will allow tool manufacturers to machine 30% more PCD cutting edges than before, in the same amount of time. With its ability to generate single erosion pulses at a time, the new VPulse EDM technology allows surface quality to be increased by a factor of two or more. The extended travel distance and swivelling range of the machine means that tools with a diameter of 320mm and a length of 250mm can be accommodated.

Vollmer subsidiary Loroch, offers a portfolio of automatic saw blade sharpening machines, including the new CNBS 100 automatic band saw blade sharpening machine. This is an upgrade of the CNBS 80. Another innovation from Loroch is the CNC-controlled PowerStar 850 sharpening machine which bridges the gap between the entry-level EKOSTAR 760 and the K850, a fully automatic saw blade sharpening machine solution.