Overview
CUTTING ACCURACY
Easy to Achieve High Cutting Precision
Water jet cutting accuracy and precision is varied by following factors.
Positioning Accuracy
It is the accuracy of X-Y motions over certain ranges.
- Static measured with nozzle stopped
- Dynamic measured with nozzle in motion
Work Piece Accuracy
The overall accuracy of finished workpieces depends on,
- Dynamic positioning accuracy
- Cutting speed varied on kerf width
- Finish quality selected by operator
- Cutting tool offset value set by operator
- Z-axis non-perpendicularity
- Relative motion between X-Y axis structure and work pieces support table
- Relative motion between work piece support table and work piece
- Taper caused by nozzle condition and/or nozzle standoff and/or cutting speed
Repeatability
It depends on consistency of X-Y motion.
Part Repeatability
It depends on,
- X-Y motion repeatability
- Relative motion between X-Y axis structure and workpiece support table
- Relative motion between workpiece support table and workpiece
- Jet size growth cause by nozzle wear
- Change in taper caused by nozzle wear or changing of standoff.
