Spindlehead with tool-changing device

Claim 1

In a spindlehead for a tool machine which is movable in at least one axial direction and has at least one spindle, comprising tool-changing means mounted on and movable with said spindlehead and includes a tool magazine and a changing arm which can be pivoted in front of said spindle and support means for supporting said changing arm for movement in a direction parallel to the spindle axis for effecting an insertion of a tool directly into said spindle and for removing said tool from said spindle and, simultaneously therewith, the removal of a tool from said tool magazine and a placement of said tool in said tool magazine, respectively, the improvement comprising wherein said tool magazine includes driving sleeve means receivable in said spindle, said changing arm being adapted to remove said driving sleeve means from said tool magazine and insert same into said spindle and wherein said spindlehead includes means for receiving a multiple-spindle unit which can be driven by said driving sleeve means mounted on said spindle, said multiple-spindle unit having a recess therein for receiving said changing arm when the multiple-spindle unit is mounted on said spindlehead.