Patent ID: 7008152

Claim:
A machine tool for at least triaxially machining work pieces ( 15 ), comprising: a machine bed ( 1 ); a first frame ( 2 ) joined to the machine bed ( 1 ); a work spindle ( 10 ), which, by means of a work spindle motion unit ( 13 ) that is disposed on the first frame ( 2 ), is movable on a plane spanned by a vertical y direction and a horizontal x direction, and which is designed for holding a tool ( 16 ), and which said work spindle has a rotational axis that extends perpendicularly to said plane in a z direction; a working area ( 14 ) disposed on the machine bed ( 1 ) before the work spindle ( 10 ) in the z direction; and a work holding fixture ( 29 ), which includes holding means ( 32 ) for a work piece ( 15 ) or a fitting piece ( 31 ) that holds a work piece ( 15 ) and which is disposed in the working area ( 14 ); wherein a z skid ( 23 ), which is displaceable in the z direction, is disposed above the working area ( 14 ) and the work spindle ( 10 ); wherein the work holding fixture ( 29 ) is joined to, and suspended downwards from, the z skid ( 23 ),wherein the z skid ( 23 ) is mounted on a second frame ( 17 ) for displacement on z guides ( 24 ), the second frame ( 17 ) being disposed above the working area ( 14 ); wherein the second frame ( 17 ), the first frame ( 2 ), the machine bed ( 1 ) and props ( 21 ), which connect the second frame ( 17 ) with the machine bed ( 1 ) on a side that faces away from the work spindle ( 10 ), form an inherently rigid machine frame ( 22 ) that defines the working area ( 14 ); wherein the work spindle ( 10 ) is disposed on a compound slide rest formed by a y skid ( 7 ) and an x skid ( 4 ) which are part of the work spindle motion unit ( 13 ); wherein the work spindle ( 10 ) is non-displaceable in the z direction; wherein a chip removal arrangement ( 35 ) is provided underneath the work holding fixture ( 29 ) and the work spindle ( 10 ); and wherein the z skid ( 23 ) is drivable in the z direction by at least one z linear motor ( 25 ).