HEIDENHAIN SW 54843x-02 DIN Programming - Manual (Page 187)

HEIDENHAIN MANUALplus 620, CNC PILOT 640 187
4.1 Pr
ogr
amming in DIN/ISO mode
Fixed cycles
HEIDENHAIN recommends programming a fixed cycle as follows:
 Insert the tool
 Define the cutting data
 Position the tool in front of the working area
 Define the safety clearance
 Cycle call
 Retract the tool
 Move to tool change position
Typical structure of a fixed cycle
Danger of collision!
Remember when omitting cycle programming steps
during optimization:
 A special feed rate remains in effect until the next feed
command (for example the finishing feed rate during
recessing cycles).
 Some cycles traverse diagonally back to the starting
point if you use the standard programming (for example
roughing cycles).
. . .
MACHINING
N.. G59 Z.. Zero point shift
N.. G26 S.. Define the speed limit
N.. G14 Q.. Move to tool change position
. . .
N.. T.. Insert the tool
N.. G96 S.. G95 F.. M4 Define the technology data
N.. G0 X.. Z.. Pre-position
N.. G47 P.. Define the safety clearance
N.. G810 NS.. NE.. Cycle call
N.. G0 X.. Z.. If necessary, retract
N.. G14 Q0 Move to tool change position
. . .