The mainstream solution in the machining line for aluminum engine components; i.e., cylinder blocks and cylinder heads, has been provided by a transfer line featuring a multi-spindle machining device. In spite of the advantages it can offer, the conventional system is found less appropriate for meeting recent demands. These demands are; minimized investment for adapting the system to new production, and enhanced flexibility to cope with more diversified manufacturing demands. A possible answer would be machinery that simultaneously achieves production efficiency similar to that of the multi- spindle machine and the flexibility of the NC machine. To achieve this goal, the "HVT-6000," an ultra-high-speed machining center featuring a tilt- positioning mechanism using direct drive (DD) motors, was developed.