May 14, 2014
ESAB Cutting Systems has introduced Crossbow, a compact, portable oxyfuel/plasma CNC cutting system designed to be economical. The machine’s size and weight allow for simplified transport as applications require. The unit is suitable for trade schools, small fab shops, maintenance and repair shops, and for portable use within large facilities or at construction sites.
The system features a fully integrated, user-friendly CNC, eliminating the need for the user to add a controller to the system. A menu-driven interface simplifies operation. A library of 24 common shapes minimizes programming and setup time. Dimensions can be edited to create custom shapes without actual programming.
For custom programs, the CNC uses basic M- and G-code programming, and offline-programmed NC files can be transferred to the machine using a standard USB connection. Operators can set up a step-and-repeat pattern or load in a nest of shapes through the USB port.
The CNC also features automatic process sequencing, arc voltage height control, kerf compensation, and automatic plate-check. Feed rates can be adjusted at any time, and programming capabilities include nested loops and automatic return-to-start.
The unit’s motorized lifter supports either oxyfuel or plasma torches. The arc voltage height control helps ensure the plasma torch will automatically maintain a consistent cutting height. The machine also includes an ohmic touch initial height sensing, which finds the plate surface and sets the piercing height during automated plasma cutting. This system also detects torch crashes by sensing the plate during cutting, and shuts down the plasma system accordingly. A cutting oxygen solenoid valve allows automatic cutting when using an oxyfuel torch.