Programming instructions

NC Programming 17VRS Motion Commands, Dimension Inputs
3-1
DOK-MTC200-NC**PRO*V17-ANW1-EN-P
3 Motion Commands, Dimension Inputs
3.1 Coordinate System
The coordinate system defines the location of a point or series of points in
a plane or in space relative to two or three NC axes.
As a rule, the right-hand, orthogonal Cartesian coordinate system having
axes X, Y and Z is used in NC technology. This system is defined relative
to the main axes of the machine.
XZ
Y
X
Z
Y
R
C
A
B
Fig. 3-1: Coordinate system
All other axes are defined relative to these 3 main axes. A, B and C are
rotary or pivoting axes having X, Y or Z as their center axes.
The A axis rotates about the X axis, the B axis rotates about the Y axis,
and the C axis rotates about the Z axis. The positive direction of rotation
of rotary axes corresponds to clockwise rotation when viewed in the posi-
tive axis direction.
With milling machines, the main axes are generally named X, Y and Z.
With lathes the names are defined as Z and X.
Note:
The axis names can be freely defined via the axis parameters.