Модульные инструментальные системы линейки KM4X Kennametal 2017 - страница 8

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Why Bending Load Capacity Is Important When machining tough materials like titanium, cutting speeds are relatively low due to thermal effects on cutting tools. Over the years, machine tool builders responded to this issue by improving stiffness and damping on spindles and machine structures. Spindles have been designed with abundant torque at low rotational speeds. Nevertheless, the spindle connection has remained the weak link in the system. The spindle connection must provide torque and bending load capacity compatible with the machine tool specifications and the requirements for higher productivity. It becomes obvious that in end-milling applications where the projection lengths are typically greater, the limiting factor is the bending load capacity of the spindle interface. The lines on the chart to the right represent the load capacity of HSK, PSC, and the KM4X™ system. The shaded areas represent the typical requirements for heavy-duty applications in various machining processes. The KM4X system is the only system that can deliver the torque and bending capacity required for achieving high-performance machining. Some systems may be able to transmit considerable amounts of torque, but the cutting forces also generate bending moments that exceed the interface’s limits before torque limits are exceeded. IMPORTANT Information shown on the following charts was developed exclusively for use with KM4X tooling in static conditions. The results are not valid for any other system. To account for cutting force fluctuations in dynamic conditions, a reduction of 20–40% should be applied to the loads shown in charts. A6 L V i KMT KMT_KM4X_Catalog_A006_A007_EN.indd 6 KM4X C l A006 A007 EN S b 1 2016 11 45 AM 9/1/16 2:02 PM