Compatible Systems MicroRouter 900i Manual do Utilizador descarregar pdf (Página 87)

Section 11 - Glossary - 87Microrouter CNC Machine User's Manual

ABSOLUTE ......................... In absolute programming, zero is the point from which all other dimensions are

described.

ALLEN HEAD ...................... A hexagon shaped hole on the head (top) of a set screw. These are tightened and

loosened using allen keys/wrenches.

ARC ..................................... A portion of a circle.

AUTOMATIC CYCLE .......... A mode of control operation that continuously runs a cycle or stored program until a

program stop or end of program word is read by the controller.

AUXILIARY FUNCTION...... The function of the CNC machine (ie, F, S, T, M codes etc.), other than co-ordinate

based commands.

AXIS (AXES) ....................... The planes of movement for the cutting tool, usually referred to as X (horizontal left

and right, parallel to the front of the machine), Y (horizontal forward and backwards,

parallel to the side of the machine) and Z (directly vertical). Combinations of all 3

allow precise co-ordinates to be described. Axes are also referred to as slides or

slideways.

BILLET................................. The actual material being machined, sometimes referred to as the "workpiece" or

"stock".

BLOCK ................................ A collection of program words that collectively describe a machining operation. A

single program line in the CNC file.

CHARACTER ...................... A number, letter or symbol as entered into a CNC program.

CIRCULAR INTERPOLATION G-code term for a programmed arc movement.

COMMAND ......................... A signal (or group of signals) instructing one step / operation to be carried out.

CONTEXT SENSITIVE ....... When the type of input signal of an event automatically changes the output signal.

CO-ORDINATES ................. Positions or relationships of points or planes. Co-ordinates are usually described

using three numbers referring to the (X,Y,Z) axes, e.g. the co-ordinate (23,35,45)

means X axis = +23 units, Y axis = +35 units and Z axis = +45 units.

CNC ..................................... Computer Numerical Control.

CNC FILE ............................ The sequence of commands describing the manufacture of a part on a CNC

machine, written using G and M codes, also called the CNC program.

CUTTER SPEED ................ The velocity of the cutting edge of the tool relative to the workpiece. With circular

tools, the cutting speed is related to the tool when new (maximum cutting diameter).

Usually the effect of feedrate is ignored.

CYCLE................................. A sequence of events or commands.

DATUM ................................ The point (co-ordinate) from which a series of measurements are taken.

DESKTOP TUTOR.............. The input control keypad for the machine. Keypad overlays are interchangeable

according to the type of controller required.

DIRECTORY ....................... An area of a disk containing the names and locations of the files it currently holds.

DISK .................................... A computer information storage device, examples, C: (drive) is usually the computers

hard (internal) disk and A: (drive) is usually the floppy (portable 3.5" diskette) disk.

11: Glossary

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Compatible Systems MicroRouter 900i Manual do Utilizador Página 87