OMAX Glossary
OMAX JetMachining® Center Operator’s Guide
400433D-EN
6 - 5
Entity
Drawings made in Layout are made up of “entities.”
An entity has four parts:
•
A starting point
•
An ending point
•
A line or arc drawn between these two points
•
A cutting Quality
An entity is the smallest unit used to make up drawings. There are only two basic types of entities in OMAX--
lines and arcs.
E-Stop
Emergency Stop. Typically a button that you press to stop the machine in the event of an emergency.
Etch
Etch is a type of Quality. Both abrasive and water are used with Etch, but the abrasive jet nozzle moves at a
specified constant speed across the material, marking the surface without piercing the material. Etch is intended
to be used to etch part numbers or designs on hard materials, such as steel.
Feed rate
The speed at which the cutting head moves.
Firmware
Firmware refers to software that is stored on a memory chip in a device, as opposed to software on the com-
puter, which is read into memory and then run. For example, your VCR has firmware that lets you set it up to
record programs. Note that firmware is not lost when the device is unplugged. Firmware can be permanent and
unchangeable (such as the software that runs a digital watch) or it can be updated (such as a plug-in memory
chip used to store pictures in a digital camera).
Fixturing
Fixturing is the process of firmly securing a piece of material so that it does not move during machining. Fixturing
is a specialized term used in the machining tool industry (it is also used in the robotics industry). Proper fixturing
is important for maximum accuracy with the OMAX. The force of the abrasive jet stream can lift heavy pieces of
metal if they are not adequately fixtured.
Focusing tube
Typically referred to as the “Mixing Tube.” This is a tube, made from extremely hard material, that focuses the
abrasive and water into a coherent beam for cutting.
Frosting
Frosting is a minor surface abrasion from stray abrasivejet particles and is the effect of stray particles abrading
the surface of the material being cut. It typically occurs right at the edge the cut, or in a circular pattern around a
pierce.
Garnet
Garnet is the
abrasive
used by the OMAX system's abrasive jet. Garnet is a hard, inert material that is a reddish
color. When found in larger crystals, it is a semi-precious stone. The OMAX system uses a ground garnet as the
abrasive. Garnet is ideal for this purpose because of its hardness, and because it does not react with other mate-
rials (garnet is a silicate mineral--similar to sand). Because garnet is inert, it has little environmental impact.
G-Code
Although not particularly well suited for precision abrasivejet machining, G-Code is the most popular program-
ming language used for programming CNC machinery.
Gradians
A unit of measure for a circle. There are 400 gradians in a complete circle, or 200 in a half-circle. Gradians are
useful in some types of calculations.
Summary of Contents for JetMachining Center 2626
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Page 22: ...OMAX JetMachining Center Operator s Guide Safety First 1 10 400433D EN ...
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