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Communiqués de presse 2012 - Porte-outils
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Talented Slimming Agent for every Toolholder
24.02.2012 -
If there are narrow spaces in the metal cutting industry, conventional clamping systems quickly approach their limits. Since the boom of modern 5-axis machines, more and more slim and precise tool mountings are requested - or versatile tool extensions, which can be flexibly inserted in almost every interface.
SCHUNK, the competence leader for clamping technology and gripping systems is a pioneer in the field of tool extensions. The innovative family-owned company covers all relevant clamping systems with extensions from their vast toolholder program. TENDO SVL and TRIBOS SVL transmit the advantages of hydraulic expansion toolholders and polygonal technology onto conventional universal toolholders. Tool extensions based on the polygonal technological design are particularly slim. With an L1 dimension of up to 250 mm, and a run out and repeat accuracy of less than 0.003 mm, the one-pieced, maintenance-free "slimming agents" are also suitable for high-precision applications. At the same time, they can be combined with many other toolholders. Practical examples show that even rough working operations are feasible, if high-tensile aluminum is combined with toolholders and polygonal extensions. While a complete polygonal clamping device has been necessary in the past, today’s TRIBOS extensions for tools of a shank diameter up to 5 mm can be clamped in handy and low-priced manual clamping devices. Their required operation pressure is already preset. The operator inserts the extension into the clamping device, turns around the clamping screw with an Allen key, and exchanges the tool. Within 20 seconds the whole process is completed, without worrying about operating errors.
Tool extensions basing on the hydraulic expansion technology are even more flexible in use. The TENDO SVL can be up to 200 mm long, works without a peripheral unit, and transforms each precision toolholder into a highly flexible expert for narrow spaces, no matter which spindle interface is used. The precise run out accuracy, the excellent vibration damping, and the possibility of internal coolant supply provide excellent machining results and long tool lifetimes. As is usual for hydraulic expansion toolholders, a simple Allen key is sufficient for a quick tool change if extensions are used. Since the clamping screw is radially actuated, the tool change is particularly comfortable, and if necessary it can be done directly in the machine. By using intermediate sleeves, the clamping diameter of hydraulic expansion extensions can be reduced by up to 3 mm. Their high torque ensures a safe hold of the tools during drilling, reaming and rough milling operations.
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