AMB 2018

•••9••• Innovationen Milestone in circular saw technology Scientists developed novel procedure for internally cooling disc-shaped, rotating cutting tools A n innovative procedure for in- ternally cooling disc-shaped, rotating cutting tools has been developed by researchers at Fraunhofer IPA. With the support of pertinent mechanical saw and sawing tool manufacturers, the result is a lightweight, upgrada- ble and cost-effective concept that represents a milestone in the evolution of circular saws. When cutting materials, high tem- peratures occur at the site of the cut that can negatively affect the cut and the workpiece, as well as shortening the tool’s service life. One possibility for directing the cooling lubricant at the cutting area is internal cooling within the tool, which sees the cooling lu- bricant directed through internal channels in the tool directly to the cutting area. While this process has been used successfully for lathes as well as milling, grinding and drilling tools for some years now, there is no comparable in- ternal coolant system specifically bringing value added to cutting workpieces made from high-alloy stainless steels, and titanium- based or nickel-based alloys. Now, for the first time, Fraunhofer IPA has been able to integrate chan- nels into the saw blade, meaning that internally cooled tools can be created. The idea to adapt in- ternal tool cooling systems to include disc-shaped tools such as circular saw blades has enor- mous potential and has met with a great deal of interest in the in- dustry. One significant technolog- ical advantage is the possibility to process materials that were previ- ously not suitable for cutting with a saw. Huge saving potential Mechanical saw manufacturers also benefit from the innovation due to the appreciation of their machinery, and sawing tool man- ufacturers due to the larger prod- uct portfolio. In addition, there is huge savings potential in terms of the cooling lubricants used. For end users, this reduces additional costs and environmental impact. Exploratory talks are currently taking place to develop the inter- nal cooling system for series pro- duction. Lathes, drilling and milling tools with internal cooling (top) and principle of needs-oriented cooling lubricant supply (bottom) Photos: Walter AG (top), Fraunhofer IPA (bottom) Bohren und Fräsen mit einem Werkzeug Mikron Tool präsentiert an der AMB 2018 ein neues “crazy”Werkzeug zum Fräsen von Taschen und Nuten auf engstem Raum in Durchmessern ab 1 mm, geeignet insbesondere für schwer zerspanbare Materialien. Das besondere Merkmal dieses Fräsers ist seine spezielle Geometrie, welche ihm ein senkrechtes Eintauchen ins Material erlaubt bis Frästiefe 1 x d, sowie die im Schaft integrierten Kühlkanäle, welche in jeder Position einen maximalen Kühlmittelfluss garantieren. NEU: CrazyMill Cool P&S - Direktes Eintauchen (Bohren) - Taschen- und Nutenfräsen - Schruppen und Schlichten - Durchmesser von 1 bis 6 mm - Maximale Frästiefen 2.5 x d (1 x d pro Durchgang) - Höchste Abtragsraten - Hohe Standzeit und Prozesssicherheit - Oberflächengüte in Schleifqualität Halle 3, Stand A 82 - www.mikrontool.com Anzeige