Machine tool comprising parallel tool spindles that can be repositioned in relation to one another

A machine tool is provided, in particular for the synchronous machining of workpieces. The tool includes two or more spindle units ( 2, 3 ), which run parallel in a machining unit and are designed to hold workpieces and repositioning devices for the precise adjustment of the position of the spindle units ( 2, 3 ) in relation to one another, preferably in all three directions x, y and z of the orthogonal co-ordinate system in the machining unit ( 4 ). The repositioning devices for displacing at least one of the spindle units ( 2, 3 ), at least in an x and/or y direction, include an eccentric bush ( 5, 6 ), which can be rotated about a central shaft (B 1 , B 2 ) and locked and in which the spindle units ( 2, 3 ) are mounted eccentrically, parallel to the central shaft (B 1 , B 2 ).