machines for use in metal working and/or plastic processing, namely, profiling machines and cutting machines intended for use on production lines for sheet metal parts, band unwinding and plate destacking machines, electric band end welding and band straightening machines, mechanized topping shears; belt conveyors, roller tables, screw conveyors and gravity conveyors, angle transfer machines, inverting machines, workpiece advancing and feeding machines, stamping machines, punching machines, nibbling machines, notching machines, piercing machines, perforating machines, embossing machines, deep drawing machines, rimming machines, collaring machines, bending machines, folding presses, plastic foaming and extruding machines, protective gas machines, high frequency machines and laser welding machines, sawing machines, shearing machines, and stamping machines, flying flanging or beading machines and turning up machines, testing machines, marking machines, pickling and surface ennobling machines, grinding machines, polishing machines, brushing machines, sheet metal part discarding and stacking machines