(EN) A machine tool (10), particularly of the milling and boring type, comprising: - a support (1 1) for a spindle (12) that accommodates coaxially a boring bar (13) that is connected thereto by means of hydrostatically supported bearings ( 14), - means for the joint rotation of the spindle (12) and of the boring bar (13) about a main machining axis (X), - means for the translational motion of the boring bar (13) with respect to the spindle (12) along the main axis (X). First ducts (18) for feeding fluid to the hydrostatically supported bearings (14) are provided through the spindle (12). The boring bar (13) has means ( 19) for transmitting the fluid from a provided distribution unit (20), which is substantially fixed to the support (11), to the first ducts ( 18), which rotate with the spindle (12).
(ZH) 一种机床(10),尤其是用于铣削和镗削型类型的机床,该机床包括:-用于心轴(12)的支承件(11),该心轴(12)同轴地容纳镗杆(13),该镗杆借助于流体静力支承的轴承(14)连接到心轴,-用于使心轴(12)和镗杆(1 3)围绕主加工轴线(X)一起转动的装置,-用于使镗杆(13)相对于心轴(12)沿主轴线(X)平移运动的装置。将流体馈送到流体静力支承的轴承(14)内的第一导管(18)穿过心轴(12)设置。镗杆(13)具有将流体从设置的基本上固定到支承件(11)的分配单元(20)传送到所述第一导管(18)的装置(19),所述传送装置随心轴(12)转动。