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30 Technology New Geometries Make Revised Drilling System More Efficient Optimized, wear-resistant toolholders and interchangeable inserts with special cutting edges and application-specific surface finishes are also very adaptable. Gühring oHG offers its HT 800 WP interchangeableinsert drilling system with new geometries for inserts and holders, thus providing new possibilities for efficient drilling in the hole diameter range between 11 and 25.99 mm. The system includes optimized holders for all regular drilling depths. With respect to material, geometry and surface finish, the interchangeable inserts allow perfect adaptation to specific applications in steel, cast iron and aluminium. Users will see optimal machining results and enjoy economic efficiency. With their special microhoned cutting edges and application-specific surface finishes, the interchangeable inserts of the HT 800 WP drilling system are particularly wear resistant. The system’s toolholders also are very wear resistant, owing to their being made from an optimized material with nickel plating. The availability of holders sized in increments of 0.5 mm adds to the minimization of wear at the holder body. The holders’ open-flute design ensures good chip evacuation even from deep holes. Internal cooling supports the optimized flute cross section in this. Coolant exiting through wide ducts in the flute provides plentiful cooling lubrication at the cutting edges and helps evacuate chips from the hole. The system’s highaccuracy insert seat facilitates problem-free manual insert change right in the machine. Also, inserts can be changed out more often before the holder needs to be replaced than is the case with conventional drilling systems, because the holder material resists wear at the seat. Lockable clamping screws ensure that the insert is retained securely in the holder even when used on machines with heavy vibration stresses. Besides reducing wear, the close holder diameter increments of 0.5 mm improve guidance of the tool in the hole. The higher system rigidity that results extends tool life and enhances workpiece surface finish. A tool shank that is reinforced to DIN 6535 HE ensures tight, accurate clamping in the toolholder. The satisfaction of the DIN standard for solid-carbide monobloc tools allows changeover to production with the Gühring system to take place at any time. The new inserts and holders of the revised HT 800 WP system are fully compatible with earlier system inserts and holders. Thus, the new inserts can be used with the previous holders, and new holders will accept inserts of the preceding generation. Drilling tests have shown that, with either mixed combination, the inclusion of new elements results in an efficiency improvement over the old HT 800 WP system. In addition to standard HT 800 WP tools, Gühring supplies HT 800 WP stepped tools. Also offered as a special solution are alternative insert coatings. » Gühring oHG Albstadt-Ebingen, Germany www.guehring.de European Tool & Mould Making | May 2011 | www.etmm-online.com
Exhibit with DEMAT worldwide! Trade Fair for Product Development, Moldmaking and Tooling on 5 continents “From Design to Prototyping to Series Production” Nov. 29 – Dec. 02, 2011 Frankfurt / Main, Germany amerimold April 13 – 14, 2011 Chicago, USA Rosmould June 15 – 17, 2011 Moscow, Russia asiamold September 21 – 23, 2011 Guangzhou, China afrimold September 27 – 29, 2011 Johannesburg, South Africa Die & Mould INDIA April 19 – 22, 2012 Mumbai, India EuroMold BRASIL August 20 – 24, 2012 Joinville / SC, Brazil INTERMOLD to be announced Tokyo, Japan www.demat.com
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