Patent ID: 8409062

Claim:
A machine tool, with a machine bed ( 1 ), with a pair of x-guide rails ( 3 ) arranged on the machine bed ( 1 ) and extending in a horizontal x-direction, with two x-slides ( 4 , 4 ′) displaceably arranged for displacement in the x-direction on the x-guide rails ( 3 ), with a respective z-slide ( 9 , 9 ′) arranged on each x-slide ( 4 , 4 ′) and displaceable in a horizontal z-direction extending perpendicular to the horizontal x-direction, with a respective stand ( 13 , 13 ′) arranged on each z-slide ( 9 , 9 ′) with an upper side ( 21 , 21 ′) and a front side ( 15 , 15 ′), with a respective y-slide ( 17 , 17 ′) arranged on each front side ( 15 , 15 ′) and displaceably arranged for displacement in a vertical y-direction extending perpendicular to the x-direction and to the z-direction up to close to the upper side ( 21 , 21 ′), wherein each y-slide ( 17 , 17 ′) is displaceable by means of a respective y-spindle spindle nut drive ( 22 , 22 ′) and wherein each of the y-spindle spindle nut drives ( 22 , 22 ′) is rotationally drivable by means of a respective y-drive motor ( 19 , 19 ′), which is arranged on the respective stand ( 13 , 13 ′) below the respective upper side ( 21 , 21 ′) thereof, with a respective tool spindle ( 24 , 24 ′) which is arranged on each y-slide ( 17 , 17 ′), which each tool spindle is rotationally drivable about a respective rotation axis that extends in the z-direction, is non-displaceable relative to the respective y-slide ( 17 , 17 ′) in the z-direction and has a tool holder ( 26 , 26 ′) at an end of the respective tool spindle that is located in front of the respective front side ( 15 , 15 ′), with a working chamber ( 14 ) arranged in front of the front sides ( 15 , 15 ′), with a workpiece carrier ( 27 ) arranged in the working chamber ( 14 ) on the machine bed ( 1 ), with at least one respective workpiece holder ( 30 ) associated with each stand ( 13 , 13 ′) and arranged on the workpiece carrier ( 27 ), with a common bridge ( 33 ) provided directly above the upper side ( 21 , 21 ′) of each stand ( 13 , 13 ′), with at least one tool magazine ( 34 , 34 ′) arranged directly above the upper sides ( 21 , 21 ′) of the stands ( 13 , 13 ′) on the bridge ( 33 ) and with a respective tool changer ( 39 , 39 ′) provided on the bridge ( 33 ) to transfer tools ( 37 , 37 ′) from the at least one tool magazine ( 34 , 34 ′) to the respective tool holder ( 26 , 26 ′) and vice versa, the respective stand ( 13 , 13 ′) being movable below the at least one tool magazine ( 34 , 34 ′) for the tool change in such a way that the respective tool holder ( 26 , 26 ′) is located below the respective tool changer ( 39 , 39 ′).