A machine for cutting a plate of laminated glass, comprising: - a conveying surface for conveying the plate of laminated glass and the portions cut therefrom, provided with means for feeding the plate or portions of plate thereon in a longitudinal direction of the machine; - a first cutting bridge set in a fixed position over the conveying surface and set transverse with respect to said longitudinal direction for carrying out operations of cutting of the plate along a first cutting line (p 1) of the machine, transverse with respect to said longitudinal direction; - a second cutting bridge set in a fixed position over the conveying surface, downstream of said first cutting bridge, with reference to the direction of movement of the plate and set transverse with respect to said longitudinal direction, for carrying out operations of cutting of the plate along a second cutting line (p 2) of the machine transverse with respect to said longitudinal direction and set downstream of said first cutting line (p 1); - at least one device for imparting a rotation through 90° in the horizontal plane on a portion of plate in the form of a cross portion after this has been obtained by means of an operation of cutting in the first cutting bridge, so that said cross portion can in turn be divided into subportions in said second cutting bridge; and - electronic means for governing said means for feeding the plate along the conveying surface, said first and second cutting bridges (P1, P2), and said at least one device for rotation of the plate, - said machine being characterized in that the aforesaid electronic control means are programmed for governing said first cutting bridge to subdivide the cross portions also by means of said first cutting bridge, carrying out secondary cuts (Y, Z) on cross portions after rotation thereof through 90°, - and in that said machine comprises a waiting section, situated in an intermediate position between said first cutting bridge and said second cutting bridge, provided with a rack with a number of compartments on top of one another, which is vertically displaceable, for accumulating a plurality of portions of plate in levels on top of one another and at a distance apart in said waiting section. - a conveying surface for conveying the plate of laminated glass and the portions cut therefrom, provided with means for feeding the plate or portions of plate thereon in a longitudinal direction of the machine; - a first cutting bridge set in a fixed position over the conveying surface and set transverse with respect to said longitudinal direction for carrying out operations of cutting of the plate along a first cutting line (p 1) of the machine, transverse with respect to said longitudinal direction; - a second cutting bridge set in a fixed position over the conveying surface, downstream of said first cutting bridge, with reference to the direction of movement of the plate and set transverse with respect to said longitudinal direction, for carrying out operations of cutting of the plate along a second cutting line (p 2) of the machine transverse with respect to said longitudinal direction and set downstream of said first cutting line (p 1); - at least one device for imparting a rotation through 90° in the horizontal plane on a portion of plate in the form of a cross portion after this has been obtained by means of an operation of cutting in the first cutting bridge, so that said cross portion can in turn be divided into subportions in said second cutting bridge; and - electronic means for governing said means for feeding the plate along the conveying surface, said first and second cutting bridges (P1, P2), and said at least one device for rotation of the plate, - said machine being characterized in that the aforesaid electronic control means are programmed for governing said first cutting bridge to subdivide the cross portions also by means of said first cutting bridge, carrying out secondary cuts (Y, Z) on cross portions after rotation thereof through 90°, - and in that said machine comprises a waiting section, situated in an intermediate position between said first cutting bridge and said second cutting bridge, provided with a rack with a number of compartments on top of one another, which is vertically displaceable, for accumulating a plurality of portions of plate in levels on top of one another and at a distance apart in said waiting section.