A panel saw machine comprises: a horizontal work table movable in a forward and backward direction; a clamping unit equipped with one or more gripping elements for retaining panels while they are being machined; a cutting unit that divides the panels into sub-panels along an axis transversal to the feed axis; a horizontal tray positioned above the horizontal work table for transporting the panels; means for holding the tray in conjunction with means for driving the tray and enabling the tray to perform a first movement along the feed axis in both directions and a rotational movement on the horizontal work table so as to vary the position of the tray and of the panels with respect to the cutting unit.