OMAX Glossary
OMAX JetMachining® Center Operator’s Guide
400433D-EN
6 - 7
Kick Back
As the machine accelerates out of a corner that it has just cut, the jet will “kick back”. This can cause inside cor-
ners to be gouged. Modern controllers help reduce the effects of this by properly adjusting the speeds and/or tilt-
ing the cutting head.
Kilopascal (kPa)
The pascal is the preferred unit of measurement for pressure by the SI. One pascal is defined as one Newton per
meter squared. You can choose either bar or megapascal when you choose a metric-based unit of measurement
in OMAX software. (Megapascals are more convenient because one pascal is a very small amount of pressure.)
1,000 pascals = 1 kilopascal (kPa)
1,000,000 pascals = 1 megapascal (MPa)
1 megapascal = 145 PSI
1 megapascal = 10 bar
KSI
This is commonly used in the United States and is the unit used by OMAX software when you select any of the
English units of measurements.
KSI = 1,000 PSI
1 PSI = 0.069 bar
1 PSI = 6900 pascals
Lag
As the cutting head moves across the material that it is cutting, the spot where the jet exits the material will lag
behind the spot where it entered the material. This lag is “jet lag”.
Layout
Layout is the OMAX CAD program. Use Layout to build a drawing that can be machined using the OMAX JetMa-
chining Center.
Lead IO
Lead IO Quality is used for lead-ins and lead-outs on a part. If the Lead I/O command is used, the lead-in/outs
will be automatically assigned a Quality of Lead IO. All leads should use a Quality of Lead IO. The Lead IO Qual-
ity distinguishes the lead in/out from the geometry of the part. This is used by functions such as the nesting soft-
ware and dynamic pierce.
Lead-in
A lead-in is a small section added to a drawing where the abrasive jet begins piercing the material before it
begins making the part. Lead-ins can be easily added using the Lead I/O command.
Lead-out
A lead-out is a small section added to the drawing where the abrasive jet continues to pierce the material after
the part is finished. The lead-out helps prevent any irregularities that resulting when the abrasive jet is turned off.
Lead-outs can be easily added using the Lead I/O command.
Machinability Index
A property of a material that corresponds directly with the speed at which the abrasive jet can cut through that
material. The more difficult it is to cut through a material (that is, the harder the material), the lower the Machin-
ability index.
Megapascal
The pascal is the preferred unit of measurement for pressure by the SI. One pascal is defined as one Newton per
meter squared.You can choose either bar or megapascal when you choose a metric-based unit of measurement
in OMAX software. (Megapascals are more convenient because one pascal is a very small amount of pressure.)
1,000 pascals = 1 kilopascal (kPa)
1,000,000 pascals = 1 megapascal (MPa)
1 megapascal = 145 PSI
1 megapascal = 10 bar
Summary of Contents for JetMachining Center 2626
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