1044 Каталог WIDIA 2011 Инструментальная оснастка для металлорежущих станков Стр.K8

Каталог WIDIA 2011 Инструментальная оснастка Стр. K8 1044 ENG Lab2u

Technical Information Technical Information WIDIA KM4X fit' 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 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 capacity of the spindle interface. 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. SK (7/24 Taper) SK-F (7/24 Taper with face contact) HSK PSC KM4X 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 m m S 0.25 = 0.20 n ' 0.15 .22 ‘aj 0.10 0.05 0.00 8 8 ft 8 ) 9 o c c O n ° io< o 0 O 0 o ) n A A A 0 Lis 2 L A i A A A 1000 2000 3000 4000 bending moment (Nm) 5000 6000 150mm deflection 7/24 Taper Size 50 with Face Contact o 7/24 Taper Size 60 HSK125A A KM4X125 o 7/24 Taper Size 50 ♦ HSK100A A KM4X100 K8 WIDIA 0