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Advanced Error Correction Methodology Applied to Abrasive Waterjet Cutting

First introduced in the last decade, the concept of "compute first, move later" for motion control optimized the abrasive waterjet cutting process. Using a cutting model that varied cutting speed around corners and along arcs provided a greater degree of accuracy. Recent innovations in corner-cutting strategy allow the cutting of external corners without sacrificing speed or surface quality. The latest development in machine-control hardware and software advances the error correction methodology in abrasivejet machining to the next generation. The nozzle automatically tilts along the cutting path, compensating for taper error as well as lag error at corners. A tool tip tilt mechanism lets the nozzle tilt quickly about the material entry point without large accelerations and vibrations. This paper provides insight into the development of these advanced error correction technologies as applied to abrasivejet cutting.

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