Esab’s Crossbow is a compact oxy-fuel/plasma CNC cutting system that is said to be portable and economical, with a size and weight that make it easy to transport as application requires. Automated functions and a user-friendly CNC provide versatile oxy-fuel and plasma processing. The unit is said to be suitable for trade schools, small fabricating shops, maintenance and repair shops, or for portable use within large facilities or at construction sites.
The machine can be equipped with an optional PowerCut 900 (60A), PowerCut 1300 (70A) or ESP-101 (100A) air plasma package. Using the plasma, the system can rapidly cut mild steel and aluminum as thick as ¾" (20 mm) or stainless steel as thick as ⅝" (15-mm). The packages feature non-high-frequency starting and electronically controlled pilot arc circuits for high reliability.
The cutting system features a motorized lifter to support oxy-fuel or plasma torches. A precision guide rail supports a stable motion of the crossbeam and full support of the cutting torch for accurate, reliable performance. Precision linear rails minimize vibration during cutting to ensure accuracy over the entire working envelope. A drive disengage toggle switch supports quick, simple manual positioning.
The machine includes Ohmic touch initial height sensing, which locates 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. The arc voltage height control feature ensures that the plasma torch will automatically maintain a consistent cutting height.
A menu-driven interface makes operation easy to learn, and a library of 24 common shapes minimizes programming and setup time. Dimensions are edited to create custom shapes without actual programming. For custom programs, the CNC uses basic M- and G-code programming, and off-line 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.
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