ACU-RITE MILLPWR G2, Техническое руководство

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256 ACU-RITE Technical Manual MILLPWR
G2
5.4.1 Axis Designations and Coordinates
Principal, parallel and rotary axes are distinguished.
Properties of
the principal
axes X, Y, Z X, Y and Z axes are principal axes. These axes have a defined spatial orienta-
tion in a coordinate system model, and are always linear.
It is of no importance to the editor if the current coordinate system is that of
the machine bed system, or if it is aligned otherwise.
They are the principal coordinates for programming in the editor.
An easy way to remember this system is to use the “right-hand rule”:
Algebraic signs
of the axes When the programmer writes an NC program, he always assumes that the
tool (not the workpiece) is in motion. If the machine moves its workpiece-hold-
ing element (table) in a particular axis instead of the tool, then the direction of
actual motion is opposite to the direction of axis motion. In this case the direc-
tion of motion is designated with the same algebraic sign as the axis direction,
but with an apostrophe: +X´, +Y´ and +Z´:
+X
+Y
+Z
+X
+X´