sectional spindle capable of feed moving inside the sleeve; 3D angular positioning of spindle axis for angular machining, especially for machining of angular holes and skewed slots; Mechanical devices for working feeds and rapid traverses in X, Y, and Z axes to increase working efficiency; Reasonable construction and superior machining functions such as drilling, boring, milling of plane, inclined plane and slot, and such functions available by use of the corresponding attachments as milling of helix slot, round surface, gear rack, gear and spindle etc.
