Flexible precision toolholder for automated tool grinding

Clamping Technology/Grinding Toolholder

Lauffen/Neckar, (PresseBox) - The new generation of SCHUNK PRISMO tool grinding toolholders promise more efficiency during production grinding and re-sharpening of tools. PRIMSO3 directly clamps every shank diameter between 3 mm and 20 mm fully automaticly without using collet chucks or intermediate sleeves on the fly at a run-out and repeat accuracy of less than 0.005 mm. The tool shank is automatically centered in the toolholder during the clamping operation. An optimized interfering contour ensures a better interference between the grinding wheel and the toolholder even in case of demanding operations. Compared with conven-tional multi-range grinding toolholders, the set-up time with PRISMO3 is lowered up to 70%. Moreover, the users don't have to invest in intermediate sleeves and collet chucks. Since the X axis is independent from the tool diameter and does not change, every type of chuck jaw can remain at the same axial position, which allows unmanned machining of various drilling, reaming, and milling tools in small quantities without having to re-program the L1 dimension around the clock. Expensive additional programming and the danger of a crash are now a thing of the past.

Compact dimensions and robust design

The constructional design, the basic sleeve, and the robust nature give a particularly high rigidity to the toolholder. Its stable jaw guidance avoids a swing up of the grinding wheels, and completely avoids tube imbalance. The hard coated chuck jaws are particularly robust and durable. If damage should happen, the complete set of chuck jaws can be exchanged. The toolholder is rinsed with clean oil during the grinding operation which prevents pollu-tion, and a consistently high precision is achieved. No matter if axial clamping cylinders, radial power chucks, or an individual machine interface is concerned: PRISMO3 is compati-ble with the grinding machines of renowned manufacturers. The compact dimensions of 125 mm x 125 mm leave enough space for the tools during the grinding process and load-ing operation. The tool grinding toolholder will be available in the fall of 2014.

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