Cycle Parameters - HEIDENHAIN TNC 620 User Manual
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10
Fixed Cycles: Multipass Milling
10.2 MULTIPASS MILLING (Cycle 230, DIN/ISO: G230, software option
19)
Cycle parameters
Starting point in 1st axis Q225 (absolute): Starting
point coordinate of the surface to be machined in
the reference axis of the working plane. Input range
-99999.9999 to 99999.9999
Starting point in 2nd axis Q226 (absolute): Starting
point coordinate of the surface to be machined in
the minor axis of the working plane. Input range
-99999.9999 to 99999.9999
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
1st 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
2nd 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
Number of cuts Q240: Number of passes to be
made over the width. Input range 0 to 99999
Feed rate for plunging Q206: Traversing speed of
the tool while moving to depth in mm/min. Input
range 0 to 99999.999; alternatively FAUTO, FU, FZ
Feed rate for milling Q207: Traversing speed of
the tool in mm/min while milling. Input range 0 to
99999.999 alternatively FAUTO, FU, FZ
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
Set-up 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
232
NC blocks
71 CYCL DEF 230 MULTIPASS MILLING
Q225=+10
;STARTNG PNT 1ST AXIS
Q226=+12
;STARTNG PNT 2ND
AXIS
Q227=+2.5
;STARTNG PNT 3RD AXIS
Q218=150
;FIRST SIDE LENGTH
Q219=75
;2ND 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
;SET-UP CLEARANCE
TNC 620 | User's Manual Cycle Programming | 3/2014
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