Siemens SINUMERIK 840DE SL - Page 1627

Detailed Description
2.1 Path feedrate F
Feeds (V1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-19
Retraction speed
Retraction is performed at maximum axis velocity.
This can be configured in machine data:
MD32000 MAX_AX_VELO.
Retraction acceleration, jerk
Acceleration is performed at maximum possible values.
This can be configured in machine data:
MD32300 MAX_AX_ACCEL.
Example
N55 M3 S500 G90 G18 ; Set active machining plane
...
N65 MSG ("thread cutting")
MM_THREAD:
N67 $AC_LIFTFAST=0 ; Reset before beginning of
thread
N68 G0 Z5
N69 X10
N70 G33 Z30 K5 LFON DILF=10 LFWP ALF=7 ; Enable fast retraction for
thread cutting
; Retraction path = 10 mm
; Retraction plane Z/X
(due to G18)
; Retraction direction -X
(with ALF=3; retraction
direction +X)
N71 G33 Z55 X15
N72 G1 ; Deactivate thread cutting
; If thread cutting N69 IF $AC_LIFTFAST GOTOB MM_THREAD
; was aborted
N90 MSG ("")
...
N70 M30
N55 M3 S500 G90 G0 X0 Z0
...
N87 MSG ("tapping")
N88 LFOF ; Deactivate fast retraction
before tapping
N89 CYCLE... ; Thread drilling cycle with G33
N90 MSG ("")
...
N99 M3012.97