Каталог Widia инструментальная оснастка - страница 1044

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Technical Information deflection (m) @ 150mm torque Technical Information KM4X™ 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 SK (7/24 Taper) responded to this issue by improving stiffness and damping on spindles and machine structures. Spindles have been designed with abundant torque SK-F (7/24 Taper with face contact) at low rotational speeds. Nevertheless, the spindle connection has remained the weak link in the system. HSK The spindle connection must provide torque and bending capacity compatible with PSC 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 capacity of the spindle interface. KM4X The lines on the chart to the right represent the load capacity of HSK, PSC, and KM4X. The shaded areas represent the typical requirements for heavy-duty applications in various machining processes. KM4X is the only system that can deliver the torque and bending required for achieving high-performance machining. Some systems may be able to transmit a considerable amounts of torque, but the cutting forces also generate bending moments that exceed the interface’s limits before torque limits are exceeded. bending moment Drilling Turning Deep Boring Face Milling End Milling Chart shows load-deflection comparison of steep taper with and without face contact — HSK and KM4X. 0.40 0.35 0.30 0.25 0.20 0.15 150mm 0.10 0.05 F 0.00 0 1000 2000 3000 4000 5000 6000 deflection bending moment (Nm) 7/24 Taper — Size 50with Face Contact7/24 Taper — Size 60 HSK125A KM4X125 7/24 Taper — Size 50 HSK100A KM4X100 K8 WWW.WIDIA.COM