HEIDENHAIN TNC 128 (77184x-01) - Manual (Page 403)

HEIDENHAIN TNC 128 403
16.7 BA
CK BORING (Cy
c
le 204)
Cycle parameters
 Set-up clearance Q200 (incremental): Distance
between tool tip and workpiece surface. Input range
0 to 99999.9999
 Depth of counterbore Q249 (incremental): Distance
between underside of workpiece and the top of the
hole. A positive sign means the hole will be bored in
the positive spindle axis direction. Input range
-99999.9999 to 99999.9999
 Material thickness Q250 (incremental): Thickness of
the workpiece. Input range 0.0001 to 99999.9999
 Off-center distance Q251 (incremental): Off-center
distance for the boring bar; value from tool data sheet.
Input range 0.0001 to 99999.9999
 Tool edge height Q252 (incremental): Distance
between the underside of the boring bar and the main
cutting tooth; value from tool data sheet. Input range
0.0001 to 99999.9999
 Feed rate for pre-positioning Q253: Traversing
speed of the tool in mm/min when plunging into the
workpiece, or when retracting from the workpiece.
Input range 0 to 99999.999; alternatively FMAX,
FAUTO
 Feed rate for back boring Q254: Traversing speed of
the tool during back boring in mm/min. Input range 0
to 99999.999; alternatively FAUTO, FU
 Dwell time Q255: Dwell time in seconds at the top of
the bore hole. Input range 0 to 3600.000
X
Z
Q250
Q203
Q204
Q249
Q200
Q200
X
Z
Q255
Q254
Q214
Q252
Q253
Q251