HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 276)

276 8 Programming: Cycles
8.6 Cy
cles f
o
r Multipass Milling
8 Machining strategy (0/1/2) Q389: Specify how the
TNC is to machine the surface:
0: Meander machining, stepover at positioning feed
rate outside the surface to be machined
1: Meander machining, stepover at feed rate for
milling within the surface to be machined
2: Line-by-line machining, retraction and stepover at
the positioning feed rate
8 Starting point in 1st axis Q225 (absolute value):
Starting point coordinate of the surface to be
machined in the reference axis of the working plane.
8 Starting point in 2nd axis Q226 (absolute value):
Starting point coordinate of the surface to be
multipass-milled in the minor axis of the working
plane.
8 Starting point in 3rd axis Q227 (absolute value):
Coordinate of the workpiece surface used to calculate
the infeeds.
8 End point in 3rd axis Q386 (absolute value):
Coordinate in the spindle axis to which the surface is
to be face milled.
8 First side length Q218 (incremental value): Length
of the surface to be machined in the reference axis of
the working plane. Use the algebraic sign to specify
the direction of the first milling path in reference to
the starting point in the 1st axis.
8 Second side length Q219 (incremental value): Length
of the surface to be machined in the minor axis of the
working plane. Use the algebraic sign to specify the
direction of the first stepover in reference to the
starting point in the 2nd axis.
X
Y
Q226
Q225
Q219
Q218
X
Z
Q227
Q386