A machine tool, comprising: - a machine frame; - a workpiece clamping device for clamping a workpiece; - an axis slide assembly arranged on said machine frame and configured to linearly move said workpiece clamped on said workpiece clamping device by means of at least two controllable linear axes (X;Y;Z); - a spindle carrier assembly arranged on said machine frame and having at least two tool-carrying work spindles (S1, S2; S1, S2, S3); - a tool magazine configured to have a plurality of tools available; and - a tool change device configured to insert a tool to be inserted on one of the work spindles positioned at the tool change position, remove a tool received on the work spindle positioned at the tool change position, and/or replace a tool received on the work spindle positioned at the tool change position with a tool taken from said tool magazine; wherein said work spindles (S1, S2; S1, S2, S3) are arranged on a turret rotatable or pivotable about a turret axis at equal distance from the turret axis, respectively, and the spindle axes of the work spindles (S1, S2; S1, S2, S3) are oriented or orientable in parallel to each other and in parallel to the turret axis; and wherein a first tool-carrying work spindle and a second work spindle of said at least two tool-carrying work spindles are arranged opposite each other with respect to said turret axis on said rotatable turret, wherein said first work spindle is positioned at a processing position of said machine tool when said second work spindle is positioned at the tool change position of said machine tool, and said second work spindle is positioned at the processing position of said machine tool when said first work spindle is positioned at the tool change position of said machine tool, and wherein said spindle carrier assembly is configured to switch the positioning of said first work spindle with the positioning of said second work spindle by pivoting said rotatable turret about said turret axis by 180 degrees; or wherein a number N of tool carrying work spindles, with N > 2, are arranged on said rotatable turret at a respective angular distance of an angle α = 360°/N, wherein a first work spindle of said N work spindles is positioned at the processing position of said machine tool when a second work spindle of said N work spindles is positioned at the tool change position of said machine tool, and wherein said spindle carrier assembly is configured to pivot said first work spindle to the tool change position by rotating said rotatable turret about said turret axis by the angle α and/or to pivot said second work spindle to the processing position by rotating said rotatable turret about said turret axis by the angle α in the opposing direction. - a machine frame; - a workpiece clamping device for clamping a workpiece; - an axis slide assembly arranged on said machine frame and configured to linearly move said workpiece clamped on said workpiece clamping device by means of at least two controllable linear axes (X;Y;Z); - a spindle carrier assembly arranged on said machine frame and having at least two tool-carrying work spindles (S1, S2; S1, S2, S3); - a tool magazine configured to have a plurality of tools available; and - a tool change device configured to insert a tool to be inserted on one of the work spindles positioned at the tool change position, remove a tool received on the work spindle positioned at the tool change position, and/or replace a tool received on the work spindle positioned at the tool change position with a tool taken from said tool magazine;