Abstract: Manipulators (M1, M2) capable of gripping a workpiece to be machined are mounted on the tool-carrying slide or slides or on the so-called cross slide or slides (S) of a vertical lathe. The manipulators are preferably located outside the tool stations. The travel movements of the slide or slides are adapted so that, after machining of the workpiece located on the chuck (G) has been completed, a manipulator (M2) is positioned on the chuck in order to take hold of and extract the workpiece, while the other manipulator (M1) is positioned, simultaneously, in a loading station (S1) in order to take hold of and raise a new workpiece to be machined. With successive displacements of the slide or slides, the manipulator (M2) with the machined workpiece is positioned in a station (S2) for receiving and removing the workpiece itself, while the other manipulator (M1) is simultaneously positioned on the chuck (G) in order to insert the new workpiece in the latter.

Abstract: The invention relates to a lathe and grinder apparatus for turning and/or grinding works and for any like machining thereof requiring spindles to be used, which comprises two dual-spindle units (T1, T2), that may be even more than two in number, arranged in a side by side parallel relation, and interfaced by means of manipulators (R1, R2, R.sub.3), which are for feeding works to the first dual-spindle unit, for delivering the machined works from the final dual-spindle unit, and for transferring the workpieces, may be in a modified direction thereof, from a dual-spindle unit to the successive one, so as to allow the various work surfaces to be machined.