HEIDENHAIN TNC 320 (340 55x-03) - Manual (Page 300)

300 8 Programming: Cycles
8.5 SL Cy
cles
 Plunging depth Q10 (incremental value): Dimension
by which the tool plunges in each infeed.
 Feed rate for plunging Q11: Traversing speed of the
tool in mm/min during penetration.
 Feed rate for milling Q12: Traversing speed for
milling in mm/min.
 Coarse roughing tool number Q18: Number of the
tool with which the TNC has already coarse-roughed
the contour. If there was no coarse roughing, enter
“0”; if you enter a value other than zero, the TNC will
only rough-out the portion that could not be machined
with the coarse roughing tool.
If the portion that is to be roughed cannot be
approached from the side, the TNC will plunge-cut as
in Q19. For this purpose you must enter the tool
length LCUTS in the tool table TOOL.T, (See “Tool
Data,” page 120) and define the maximum plunging
ANGLE of the tool. The TNC will otherwise generate
an error message.
 Reciprocation feed rate Q19: Traversing speed of
the tool in mm/min during reciprocating plunge-cut.
 Retraction feed rate Q208: Traversing speed of the
tool in mm/min when retracting after machining. If
you enter Q208 = 0, the TNC retracts the tool at the
feed rate in Q12.