A machine tool comprising: a machine frame; at least one first working spindle which is pivotable about a first spindle axis; at least one second working spindle which is pivotable about a second spindle axis; a workpiece clamping device which is configured to receive at least a first workpiece and a second workpiece, wherein the first working spindle and the second working spindle are arranged vertically above one another, wherein the workpiece clamping device comprises at least a first workpiece table and a second workpiece table, wherein the first working spindle is assigned to the first workpiece table and the second working spindle is assigned to the second workpiece table, wherein the first workpiece table is pivotable about a first pivot axis, which is aligned parallel to a horizontal X-axis, and the second workpiece table is pivotable about a second pivot axis, which is aligned parallel to the X-axis, wherein a spindle adjusting device is formed, which is arranged on the machine frame and/or coupled thereto, wherein the spindle adjusting device has a main adjusting unit, which is coupled to the machine frame by means of an X-axis linear guide, wherein the main adjusting unit is displaceable in the direction of the X-axis relative to the machine frame by means of the X-axis linear guide, wherein the X-axis linear guide has four or more guide carriages which are coupled to the main adjusting unit and which interact with two guide rails which are coupled to the machine frame, wherein a height adjusting unit is formed, which is coupled to the main adjusting unit by means of a Y-axis linear guide, wherein the height adjusting unit is displaceable along the Y-axis relative to the main adjusting unit or relative to the machine frame by means of the Y-axis linear guide, wherein the first working spindle and the second working spindle are each arranged on a separate height adjusting unit and are thus displaceable independently of one another along a Y-axis, wherein a separate drive is provided for each of the height adjusting units, wherein the first working spindle is displaceable in the Z-axis by means of a first Z-axis linear guide and wherein the second working spindle is displaceable in the Z-axis by means of a second Z-axis linear guide, wherein the first working spindle and the second working spindle are displaceable independently of one another. a machine frame; at least one first working spindle which is pivotable about a first spindle axis; at least one second working spindle which is pivotable about a second spindle axis; a workpiece clamping device which is configured to receive at least a first workpiece and a second workpiece, wherein the first working spindle and the second working spindle are arranged vertically above one another, wherein the workpiece clamping device comprises at least a first workpiece table and a second workpiece table, wherein the first working spindle is assigned to the first workpiece table and the second working spindle is assigned to the second workpiece table, wherein the first workpiece table is pivotable about a first pivot axis, which is aligned parallel to a horizontal X-axis, and the second workpiece table is pivotable about a second pivot axis, which is aligned parallel to the X-axis, wherein a spindle adjusting device is formed, which is arranged on the machine frame and/or coupled thereto, wherein the spindle adjusting device has a main adjusting unit, which is coupled to the machine frame by means of an X-axis linear guide, wherein the main adjusting unit is displaceable in the direction of the X-axis relative to the machine frame by means of the X-axis linear guide, wherein the X-axis linear guide has four or more guide carriages which are coupled to the main adjusting unit and which interact with two guide rails which are coupled to the machine frame, wherein a height adjusting unit is formed, which is coupled to the main adjusting unit by means of a Y-axis linear guide, wherein the height adjusting unit is displaceable along the Y-axis relative to the main adjusting unit or relative to the machine frame by means of the Y-axis linear guide, wherein the first working spindle and the second working spindle are each arranged on a separate height adjusting unit and are thus displaceable independently of one another along a Y-axis, wherein a separate drive is provided for each of the height adjusting units, wherein the first working spindle is displaceable in the Z-axis by means of a first Z-axis linear guide and wherein the second working spindle is displaceable in the Z-axis by means of a second Z-axis linear guide, wherein the first working spindle and the second working spindle are displaceable independently of one another.