In the traditional boring and milling machining, we usually use a variety of tools 7:24 interface. Spindle face of these interfaces and tools there is a gap in the role of high-speed rotating spindle and cutting force, the big end of the spindle aperture expands, causing the tool axial and radial positioning accuracy. Meanwhile axial taper size and weight are larger, is not conducive to rapid tool change and machine miniaturization.

The high-speed machining We usually recommend a new interface standard is called hsk of. hsk Aachen University by the German Institute for machine tools specifically designed for the new high-speed machine tool development - machine interface, and formed for automatic tool change and manual tool change, the central cooling and face cooling, ordinary type and compact six forms . hsk is a small taper (1:10) short hollow taper shank, end use and cone simultaneously contact, thus forming high contact stiffness. After analysis, although hsk connecting spindle at high rotation speed will also expand, but still able to maintain a good contact, little speed on the rigidity of the connection interface.