Omax JetMachining Center 2626, Operator'S Manual

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400433D-EN 6 - 1
Chapter 6
OMAX Glossary
Abrasive
Abrasive is material entrained within the high pressure water stream to speed the machining process. Machining
a hard material requires the use of abrasive. Some soft materials such as foam can be cut without abrasive
either by using a water only nozzle, or by plugging the abrasive line with a piece of tape to prevent air from enter-
ing.
Abrasive Flow Rate
The rate at which abrasives are blown through the mixing tube. The abrasive flow rate should be measured for
your OMAX machine every couple of weeks, or whenever you change abrasive size or brand. The flow rate is
usually measured in Lbs/Min or Kg/Min. Generally speaking, the higher the abrasive flow rate, the faster the cut.
Increasing the flow rate too high, however, can result in frequent plugging of the mixing tube.
Abrasivejet
A machining tool that combines high-pressure water with an abrasive such as garnet. The water and garnet are
mixed and emerge through a narrow orifice at high-speed. As this “jet” is moved across material, it quickly erodes
the material, cutting through the material.
Alpha Software
Alpha Software refers to software that it is not yet ready to be called Beta. Typically it is barely usable, contains a
lot of bugs, and much of it is incomplete. It is usually released internally, or to a very select group of experienced
customers, primarily for the purpose of testing.
Attenuator
An attenuator is a pressure vessel that maintains output pressure for a constant water flow, compensating for
uneven pressure generated by some pumps. (Also called an accumulator.)
AWJ (abrasive waterjet)
A waterjet with the addition of abrasive. Used to cut or machine nearly any hard material such as metal, stone,
glass, etc.
Bankers Rounding
Banker’s rounding is a method for rounding a number where the fractional part is exactly 0.5. Rather than always
round up, or always round down, banker’s rounding uses the following rule:
If the integer portion of the number is even, then it is rounded down.
If the integer portion of the number is odd, then it is rounded up.
Round(-1.5)= -2
Round(-0.5)= 0
Round(0.5) = 0
Round(1.5) = 2
Round(2.5) = 2
Round(3.5) = 4
Bar
The bar is approximately the pressure of the atmosphere at sea level. Although it is accepted for use with the
International System of Units (SI), the preferred unit for pressure is the pascal. Many countries that use the met-
ric system use bar rather than pascal to measure pressure.