Patent ID: 6655246
Filing Date: 2003-12-02
Classification: B23Q,Y10T

Abstract:
Machine tool for the machining of a workpiece by way of a relative movement between the workpiece and a tool, comprising:a machine frame, a support arranged on the machine frame and having a first receiving means for the workpiece or the tool, a cross slide system arranged on the machine frame and having a second receiving means for the tool or the workpiece, said receiving means being movable by the cross slide system relative to the first receiving means in the direction of two cross slide movement axes extending transversely to one another in a movement zone of a cross slide movement surface determined by maximum paths in these cross slide movement directions, the cross slide system comprising two slide elements, one of said slide elements being supported on the machine frame and the other slide element bearing the second receiving means, the slide elements being movable on one another by a single two-dimensional guidance system, said guidance system enabling movement in the direction of both cross slide movement axes, said guidance system comprising at least one guide surface arranged on a first one of the slide elements, said at least one guide surface extending parallel to the cross slide movement surface, and at least one support surface on at least two supporting elements arranged on a second one of the slide elements being supported on said guide surface, said supporting elements being arranged at a distance from each other and acting with said support surface on said guide surface within a supporting area, a surface extension of said supporting area acted upon with a force being approximately of the same size in all the positions of the slide elements relative to one another, said guidance system determining the precision of guidance of the second receiving means parallel to the cross slide movement surface, and a drive device, said drive device enabling the slide element bearing the second receiving means to be moved and fixed in position relative to the other slide element in the two cross slide movement directions with a defined alignment of the slide elements relative to one another.