Patent ID: 6910400
Filing Date: 2005-06-28
Classification: B23Q,Y10T

Abstract:
1. A machine tool with at least one spindle mounting slide extending mainly longitudinally along a defined axis and able to move in a direction parallel to said axis at least between a first raised end position and a second lowered end position relative to a fixed slideway extending in said direction, driven by at least one linear electric motor comprising a linear stator and a linear rotor, the machine tool comprising counterweighting means for balancing the slide, said counterweighting means combining with the slide to form an oscillating system and comprising an elastic return damping element connected to the slide by at least one flexible transmission element, wherein the rigidity values of the elastic element and of the flexible transmission element determine a frequency of the oscillating system that does not exceed 10 Hz so that such frequency does not negatively interfere with the operation of the linear motor.