Patents Assigned to Riello Macchine Transfer SRL
  • Work unit for machine tool, with linear electric motor for axial movement of the spindle
    Patent number: 6216798
    Abstract: The invention concerns the work units for automatic machine tools in which a spindle (5) moves in translation and rotates with respect to a work axis (Z). More particularly in these units, in order to obtain the rotation/translation of the spindle, the latter is housed in a sleeve (3) that slides along the work axis (Z), with respect to which it is however free to turn.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: April 17, 2001
    Assignee: Riello Macchine Transfer Srl
    Inventors: Andrea Riello, Zeno Borsaro
  • Work unit having an integrally mounted drive unit
    Patent number: 6204585
    Abstract: A work unit for automatic machine tools is provided with a spindle that moves in translation and rotates with respect to a work axis. The spindle is housed within a sleeve that is slidable along the work axis, with the spindle being rotatable within. Rotation of the spindle is controlled by a drive unit mounted directly on the spindle and arranged inside the sleeve, which eliminates the need for a separate transmission mechanism and thereby results in a simplified construction of the work unit and an increase in performance.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 20, 2001
    Assignee: Riello Macchine Transfer SRL
    Inventors: Andrea Riello, Zeno Borsaro