Patent ID: 7201088

Claim:
A lathe comprising: a vertically positioned motor-driven work spindle on whose lower end are positioned workpiece clamps, an initial compound slide system by means of which the work spindle can move vertically in a Z1 direction and horizontally in an X1 direction, at least one initial stationary tool holder, and at least one second tool holder which can execute an advancing action in at least two directions during the machining process, while the advancing movement of the second tool holder is independent of but synchronized with the control of the first compound slide system, wherein the second tool holder ( 46 ) is movable in a controlled fashion vertically in a Z2 direction and horizontally in an X2 direction by a second compound slide system ( 28 , 30 , 32 , 34 ); and wherein the movement of the second tool holder ( 46 ) is synchronized with the movement of the first compound slide system ( 19 ) in such a way that the movement of the second tool holder ( 46 ) provides an arithmetic overlay of the movement of the first compound slide system ( 19 ) and the independently controlled relative movement between the workpiece and the second tool holder ( 46 ).