Каталог Widia инструментальная оснастка - страница 17

• WID_TOOLINGSYSTEMS10_G004_G005.qxp.pdf
• WID_TOOLINGSYSTEMS10_G006_G007.qxp
• WID_TOOLINGSYSTEMS10_G008_G009.qxp
• WID_TOOLINGSYSTEMS10_G010_G011.qxp

torquedeflection (m) @ 150mm KM™ Quick Change KM4X™ Features and Benefits SK (7/24 Taper) SK-F (7/24 Taper with face contact) HSK PSC Figure 1 KM4X Drilling Turning Deep Boring Face Milling End Milling bending moment Choosing What’s Right With more materials that are tougher to machine and require considerably higher When machining tough materials like titanium, cutting speeds are relatively cutting forces from the machine tool, choosing wisely on the spindle interface to low due to thermal effects on cutting tools. In response, machine tool builders maximize cutting edge performance is the key to success. have improved stiffness and damping on spindles and machine structures over The KM spindle connections greatly outperform the conventional 7/24 steep the years. Spindles have been designed with abundant torque at low rotational taper and its face taper contact derivative, HSK and PSC systems with their speeds. Nevertheless, the spindle connection remains the weak link in the system. greater stiffness advantages to help minimize undesirable vibrations, gaining The spindle connection must provide torque and bending capacity compatible the best possible productivity from the machine tool. The KM4X is the best with the machine tool specifications and the requirements for higher productivity. large, heavy-duty spindle connection, where optimal rigidity is necessary. It has It becomes obvious that in end-milling applications where the projection lengths superb balance between bending and torsion capabilities from the machine tool. are typically greater, the limiting factor is bending capacity of the spindle interface. 0.40 0.35 0.30 As an example, an indexable 0.25 helical cutter with 250mm projection from spindle face and 0.20 80mm in diameter generates 0.15 4620 Nm of bending momentand less than 900 Nm of torque. 150mm 0.10 F 0.05 0.00 Deflection 0 1000 2000 3000 4000 5000 6000 Chart shows a comparison of Steep Taper with bending moment (Nm) and without face contact, HSK, and KM4X. 7/24 Taper — Size 50with Face Contact 7/24 Taper — Size 60 HSK125A KM4X125 7/24 Taper — Size 50 HSK100A KM4X100 WWW.WIDIA.COM A7