HEIDENHAIN TNC 620 (340 56x-02) Cycle programming - Manual (Page 187)

HEIDENHAIN TNC 620 187
7.
9 CONT
OUR TRAIN (Cy
c
le 25, DIN/
ISO: G125, A
d
v
a
nced Pr
ogr
a
mming
F
e
at
ur
es Sof
tw
a
re
Option)
Cycle parameters
U Milling depth Q1 (incremental): Distance between
workpiece surface and contour floor. Input range
-99999.9999 to 99999.9999
U Finishing allowance for side Q3 (incremental):
Finishing allowance in the working plane. Input range
-99999.9999 to 99999.9999
U Workpiece surface coordinate Q5 (absolute):
Absolute coordinate of the workpiece surface
referenced to the workpiece datum. Input range:
-99999.9999 to 99999.9999
U Clearance height Q7 (absolute): Absolute height at
which the tool cannot collide with the workpiece.
Position for tool retraction at the end of the cycle.
Input range -99999.9999 to 99999.9999
U Plunging depth Q10 (incremental): Infeed per cut.
Input range: -99999.9999 to 99999.9999
U Feed rate for plunging Q11: Traversing speed of the
tool in the spindle axis. Input range 0 to 99999.9999,
alternatively FAUTO, FU, FZ
U Feed rate for milling Q12: Traversing speed of the
tool in the working plane. Input range 0 to
99999.9999, alternatively FAUTO, FU, FZ
U Climb or up-cut? Up-cut = –1 Q15:
Climb milling: Input value = +1
Up-cut milling: Input value = –1
To enable climb milling and up-cut milling alternately
in several infeeds:Input value = 0
Danger of collision!
To avoid collisions,
„ Do not program positions in incremental dimensions
immediately after Cycle 25 since they are referenced to
the position of the tool at the end of the cycle.
„ Move the tool to defined (absolute) positions in all main
axes, since the position of the tool at the end of the
cycle is not identical to the position of the tool at the
start of the cycle.
Example: NC blocks
62 CYCL DEF 25 CONTOUR TRAIN
Q1=-20 ;MILLING DEPTH
Q3=+0 ;ALLOWANCE FOR SIDE
Q5=+0 ;SURFACE COORDINATE
Q7=+50 ;CLEARANCE HEIGHT
Q10=+5 ;PLUNGING DEPTH
Q11=100 ;FEED RATE FOR PLNGNG
Q12=350 ;FEED RATE FOR MILLING
Q15=-1 ;CLIMB OR UP-CUT