Abstract: The invention concerns a multi-spindle automatic lathe intended for machining bars of material. Such lathe comprises: a spindle carrier (2) adapted to be displaced in rotation and translation and on which spindles (3) intended for holding bars (M) are assembled together, and bar (M) shaping means including tool bearing carriages (14) which are arranged and adapted in order to receive machining tools (12) and which are directed by control cams (16, 18) supported and driven in rotation, such lathe being characterized in that the shaping means are mounted around a central body (50) which assures the interior guidance of the spindle carrier (2) while the shaping means and the spindles (3) assembled on the spindle carrier (2) are actuated from the exterior by peripheral driving means.

Abstract: Machine with a table with intermittent rotation makes it possible to perform with great rapidity the working and assembly of parts requiring great precision. It comprises operating units (49, 49') placed above, below and at the side of rotating table (28), and cylindrical bodies (2, 2') to which are fastened linear cams (1, 1'), said bodies during a work cycle perform an axial movement transmitting the advance and return movement to the operating units by radial linear cams (1, 1'), and during an idle time, bodies (2, 2') are rotated angularly so that the return to their initial position takes place without influencing said operating units (always during idle time). Linear cams (1, 1') are fastened to bodies (2, 2') mutually movable in opposite directions, both axially and angularly, to balance the forces due to the various masses in very rapid movement and their notable accelerations.