Compatible Systems MicroRouter 900i Manual de usuario descargar pdf (Pagina 89)

Section 11 - Glossary - 89Microrouter CNC Machine User's Manual

MACHINE DATUM .............. A fixed zero reference point set by the machine manufacturer. The machine datum is

used to define the co-ordinate based grid system of the CNC machine. All machining

co-ordinates originate from this point. However, this point can be temporarily moved

using the machine offset facility.

MACHINE OFFSET ............ The workpiece offset file used with VR and real CNC machines.

MDI ...................................... Manual Data Input - A method used for manually inserting data into the control

system (ie, Desktop Tutor, qwerty keyboard etc.).

MODAL................................ Modal codes entered into the controller by a CNC program are retained until changed

by a code from the same modal group or cancelled.

NC........................................ Numerical control.

OFFSET .............................. Combination of two types of file, the workpiece offset and the tool offset. Used to

describe the workpiece datum, a zero reference used on the CNC machine to ensure

machining occurs in the correct place on the billet. Offsets are used to shift parts of

the three dimensional co-ordinate based grid system, used by the CNC machine.

PART DATUM...................... Used as a zero reference point in a CNC file. All machining co-ordinates originate

from this point.

PART PROGRAM ............... A list of coded instructions which describes how the designed part, or component, will

be manufactured. The part program is also referred to as the CNC file, program, or G

and M code program.

PC ........................................ Personal computer.

PRJ ...................................... Denford CNC Project file, extension ".prj". Project files contain global information

about user defined settings in the VR CNC Milling software, such as toolpost setup,

tooling library, offsets, toolbar and window positions etc.

PROGRAM.......................... A systematic arrangements of instructions or information to suit a piece of equipment.

RAPID TRAVERSE............. Fast movement of the cutting tool through the 3 machine axes between cutting

settings.

REFERENCE POINTS ....... The machine has 3 reference points used in setting the limits of movement for its

slides (axes).

RPM..................................... Revolutions per minute (rev/min) - a measure of spindle speed.

SIMULATION OFFSET ....... The workpiece offset file only used with VR CNC Milling software 2D and 3D

graphics.

SLIDES................................ The 3 machine axes - see axis.

SPINDLE SPEED................ The rate of rotation (velocity) of the machine head / cutting tool, measured in RPM.

SOFTWARE ........................ Programs, tool lists, sequence of instructions etc...

TOOL OFFSET ................... When machining, allowances must be made for the size of tools being used, since

they all differ in length. The tool offset is the amount the Z value must be moved (or

offset), so that all the different cutting tool tips used line up with each other, so they

can all be used by one CNC file. See OFFSET.

11: Glossary

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Compatible Systems MicroRouter 900i Manual de usuario Pagina 89