OPERATIONS
Sept-2018
71
12. SETTING KERF OFFSET
When plasma cutting, a kerf (or opening) is produced by the plasma arc. The cutting
current and cutting speed, as well as the diameter of the orifice in the plasma torch
nozzle determine the width of the kerf. Typically, the amount of offset will range
from 0.040” (1.0 mm) to 0.060” (1.5 mm) when cutting mild steel (refer to the plasma
cutting system manual for recommended kerf offsets). If the cutting path is not
modified to compensate for the kerf width, the completed cut will be undersize (for
external cuts) or oversize (for internal cuts) by the amount of the kerf width. The
machine control compensates for the kerf width without the need to redefine the
actual path. The operator must enter the desired compensation amount into the
control using the following procedure.
Kerf offset can be set from Automatic operation menu.
Press the KERF button.
Enter the offset for the Kerf in the GAP EXPIATE entry area and press enter when
finished.
After entering the value, it is a good idea to run a test square (approximately 4”
square) and measure the size of the part. If it is undersize, then the kerf value is too
small and the operator should add to it. If it is oversize, then the kerf value is too
large and the operator should subtract from it.
Summary of Contents for CNC Plasma Cutting Table
Page 2: ......
Page 4: ...TABLE OF CONTENTS Sept 2018 4...
Page 22: ...SAFETY Sept 2018 22...
Page 24: ...INSTALLATION Sept 2018 24...
Page 88: ...PROGRAMMING Sept 2018 88...
Page 117: ...PIPE CUTTING ATTACHMENT Sept 2018 117 Pipe Supports Pipe Cutter Base...
Page 124: ...PIPE CUTTING ATTACHMENT Sept 2018 124...
Page 128: ...PIPE CUTTING ATTACHMENT Sept 2018 128 j Then press F2 SYSTEM to see the following...
Page 136: ...PIPE CUTTING ATTACHMENT Sept 2018 136...
Page 140: ...WATER MIST CHILLER Sept 2018 140...
Page 144: ...APPENDIX A FastCAM SETUP Sept 2018 144 4 Choose the functions you need and Enter...
Page 154: ...APPENDIX A FastCAM SETUP Sept 2018 154...
Page 159: ...APPENDIX A FastCAM SETUP Sept 2018 159...
Page 164: ...APPENDIX A FastCAM SETUP Sept 2018 164...
Page 170: ...APPENDIX B Parametric Shape Library Sept 2018 170 9 Fla X 10 Lad 11 Rec 12 Rec8...
Page 172: ...APPENDIX B Parametric Shape Library Sept 2018 172 19 Rec 20 Rec c 21 Circle4 22 Rec...
Page 174: ...APPENDIX B Parametric Shape Library Sept 2018 174...