Developed for the machining of tough materials, the RF100 5-Speed and RF100 7-Speed solid-carbide end mills feature an increased tooth number. As a result, the 5-fluted 5-Speed and 7-fluted 7-Speed generate high metal removal rates with stable process reliability, even when processing difficult materials, says the company.
Providing high-performance roughing even at large depths of cut, the two ranges maximise feed rate parameters during high metal removal rate operations. As part of the Guhring Trochoidal Cutting (GTC) series, the RF100 5-Speed and RF100 7-Speed are suitable for machining stainless steels, special alloys and a variety of steels and cast irons.
At limited machine speeds, or cutting speeds limited by the material, the RF 100 5- and 7-Speed are said to ensure high feed rates and long tool life thanks to the increased number of teeth. In addition, the tools can conduct trochoidal milling at up to 10% radial depth of cut.
The optimal cutting conditions for the RF 100 5-Speed can be found in applications on all tough materials up to 1,200 N/mm², and where a ramping angle of up to 10° is required. Guhring’s latest end mill is also suitable for slotting with cutting depths up to 1xD, and helical milling. Although the RF 100 7-Speed is also a good choice for tough materials up to 1,400 N/mm², the 7-fluted variant can additionally be applied to helical milling at in-feeds of up to 0.05xD per cycle. From a dimension perspective, the new RF 100 5 and 7 Speed are available with cutting diameters of 6, 8, 10, 12, 16 and 20 mm, with a necked diameter that permits cutting depths from 20 to over 60 mm, depending upon diameter.
Also, on show from the Guhring milling stable will be the newly developed Ratio line of roughing end mills. With flat-crested geometry and an optimised roughing profile that demonstrates 60% longer service life, the Ratio roughing cutter has several geometry adjustments aimed at providing performance far beyond competitor products, says the company. For instance, Ratio increases material removal rates using its asymmetrical flutes that reduce cutting pressure compared with smooth cutters. This soft cutting action allows Ratio to perform well on low-powered machine tools, or machines with unstable fixturing. Large flutes ensure optimum chip removal and high process reliability.
Alongside Ratio will be the RF100 Diver series of end mills. With optimised internal cooling channels and continued programme expansions that support ramp drilling, grooving, rough finishing and finish milling, the RF100 Diver has been designed for customers with constantly changing requirements. Suitable for five operations with just one tool, the front and peripheral geometry of the RF100 Diver has been FEM-optimised to improve coolant delivery and chip-removal efficiency. This optimisation delivers 40% longer tool life on sticky materials, as well as stainless steel and heat-resistant alloys.
As part of the 100 m2 stand at MACH, Guhring will be demonstrating its PCD cutting-tool portfolio. In 2019, Guhring published a new ‘High Performance Tools for Machining Modern Composite Materials’ brochure, and products from this 24-page publication will be on show. The range of PCD milling tools include 2, 3 and 4-edge PCD slot drills and end mills with through-coolant. All are available with a variety of shank forms and tolerances, surface finishes and coatings, helix and rake angles, and cutting edges.
