The invention relates to a numerically-controlled
machine tool, and provides a compound numerically-controlled gantry
machine. The compound numerically-controlled gantry
machine comprises a rack, a
workbench, a fixing base, a horizontal moving mechanism, a driving unit, a gantry frame, an oblique stand column, a horizontal spindle box, a first vertical spindle box, a second vertical spindle box, ahorizontal tool changer, a first vertical tool changer and a second vertical tool changer, wherein both the horizontal spindle box and the first vertical spindle box are slidingly arranged on a beamof the gantry frame, an outer circumferential side and an inner ring inner circumferential side of a to-be-machined circular knitting machine
saddle on the
workbench are machined by the horizontal spindle box, an upper end surface of the to-be-machined circular knitting machine
saddle on the
workbench is machined by the first vertical spindle box, and the second vertical spindle box which can vertically slide on an oblique surface of the oblique stand column is arranged on the oblique stand column to machine a lower oblique ring surface, at the outer circumferential side, of the to-be-machinedcircular knitting machine
saddle on the workbench. By means of the compound numerically-controlled gantry machine, the problems of low
machining efficiency and high production costs of circular knitting machine saddle workpieces, with multidimensional and multistation requirements, according to existing compound
machining centers are solved.