A numerically controlled machine tool with a cable guiding device for providing and guiding a flexibly designed connection cable of a cable-bound tool , wherein the machine tool comprises at least: a machining device which is designed to receive the cable-bound tool , one or more numerically controlled machine axes which are designed to position the machining device and a workpiece to be machined relative to one another, and the cable guiding device comprises: a first guiding device , a carriage guided displaceably in the first guiding device , a first deflection roller which is connected rotatably to the carriage , a first clamping weight G 1 , a cable pull device which connects the first clamping weight G 1 to the carriage guided in the first guiding device , wherein the connection cable runs over the first deflection roller and connects the cable-bound tool to a connection device of the machine tool , wherein, the cable guiding device further comprises: a second clamping weight G 2 , and a second guiding device in which the clamping weights G 1 and G 2 are each guided displaceably, such that the connection cable running over the first deflection roller is prestressed in a first displacement region of the cable-bound tool by a force generated by the weight force of the first clamping weight G 1 , and is prestressed in a second displacement region of the cable-bound tool by a force generated by a sum of the weight forces of the clamping weights G 1 and G 2 . a machining device which is designed to receive the cable-bound tool , one or more numerically controlled machine axes which are designed to position the machining device and a workpiece to be machined relative to one another, and the cable guiding device comprises: a first guiding device , a carriage guided displaceably in the first guiding device , a first deflection roller which is connected rotatably to the carriage , a first clamping weight G 1 , a cable pull device which connects the first clamping weight G 1 to the carriage guided in the first guiding device , a first guiding device , a carriage guided displaceably in the first guiding device , a first deflection roller which is connected rotatably to the carriage , a first clamping weight G 1 , a cable pull device which connects the first clamping weight G 1 to the carriage guided in the first guiding device , wherein the connection cable runs over the first deflection roller and connects the cable-bound tool to a connection device of the machine tool , wherein, the cable guiding device further comprises: a second clamping weight G 2 , and a second guiding device in which the clamping weights G 1 and G 2 are each guided displaceably, a second clamping weight G 2 , and a second guiding device in which the clamping weights G 1 and G 2 are each guided displaceably, such that the connection cable running over the first deflection roller is prestressed in a first displacement region of the cable-bound tool by a force generated by the weight force of the first clamping weight G 1 , and is prestressed in a second displacement region of the cable-bound tool by a force generated by a sum of the weight forces of the clamping weights G 1 and G 2 . <EOS>