Cycle parameters – HEIDENHAIN TNC 320 (340 55x-04) Cycle programming User Manual
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Fixed Cycles: Multipass Milling
1
0
.2 MUL
T
IP
A
SS MILLING (Cy
c
le 230, DIN/ISO: G230)
Cycle parameters
U
Starting point in 1st axis Q225 (absolute): Minimum
point coordinate of the surface to be multipass-milled
in the reference axis of the working plane. Input range
–99999.9999 to 99999.9999
U
Starting point in 2nd axis Q226 (absolute):
Minimum-point coordinate of the surface to be
multipass-milled in the minor axis of the working
plane. Input range –99999.9999 to 99999.9999
U
Starting point in 3rd axis Q227 (absolute): Height in
the spindle axis at which multipass-milling is carried
out. Input range –99999.9999 to 99999.9999
U
First side length Q218 (incremental): Length of the
surface to be multipass-milled in the reference axis of
the working plane, referenced to the starting point in
the 1st axis. Input range 0 to 99999.9999
U
Second side length Q219 (incremental): Length of
the surface to be multipass-milled in the minor axis of
the working plane, referenced to the starting point in
the 2nd axis. Input range 0 to 99999.9999
U
Number of cuts Q240: Number of passes to be made
over the width. Input range 0 to 99999
U
Feed rate for plunging Q206: Traversing speed of
the tool while moving from setup clearance to the
milling depth in mm/min. Input range: 0 to
99999.9999; alternatively FAUTO, FU, FZ.
U
Feed rate for milling Q207: Traversing speed of the
tool during milling in mm/min. Input range: 0 to
99999.9999; alternatively FAUTO, FU, FZ
U
Stepover feed rate Q209: Traversing speed of the
tool in mm/min when moving to the next pass. If you
are moving the tool transversely in the material, enter
Q209 to be smaller than Q207. If you are moving it
transversely in the open, Q209 may be greater than
Q207. Input range 0 to 99999.9999, alternatively
FAUTO, FU, FZ
U
Setup clearance Q200 (incremental): Distance
between tool tip and milling depth for positioning at
the start and end of the cycle. Input range 0 to
99999.9999
Example: NC blocks
71 CYCL DEF 230 MULTIPASS MILLING
Q225=+10
;STARTING POINT 1ST AXIS
Q226=+12
;STARTING POINT 2ND AXIS
Q227=+2.5 ;STARTING PNT 3RD AXIS
Q218=150
;FIRST SIDE LENGTH
Q219=75
;SECOND SIDE LENGTH
Q240=25
;NUMBER OF CUTS
Q206=150
;FEED RATE FOR PLNGNG
Q207=500
;FEED RATE FOR MILLING
Q209=200
;STEPOVER FEED RATE
Q200=2
;SETUP CLEARANCE
X
Y
Q226
Q225
Q219
Q218
Q207
Q209
N = Q240
X
Z
Q200
Q227
Q206