Siemens SINUMERIK 880 GA2 Programming Guide

01.93 4 Programming of Motion Blocks
4.3.5 Tapping without compensating chuck (SINUMERIK 880 GA2)
The spindle speed that you program in the selection block only applies to the tapping
operation, i.e. when you switch back to spindle operation, a new S word and the direction of
rotation must be programmed. Feedrate override and the feedrate enable, feed hold, dry run
and single block remain active.
Selecting the tapping cycle
If G203/204 is not active, L84 is called when L84 and/or G84 is programmed. If G203/204 is
active, the cycle which is stored in the machine data (the machine data is set with 841 as
standard) is automatically called when L84 or G84 is programmed.
Reset/M02/M30
On Reset/M02/M30, rotary axis operation is deselected or maintained depending on the setting
in the machine data.
Block search
On block search or NC Start after a block search, the last valid G function is activated and
possibly rotary axis or spindle operation is then triggered. G205 is activated if no G function
from G group 23 is found.
Program example with and without compensating chuck (changes are shown in bold
type)
Conventional programming Programming without
with compensating chuck compensating chuck
M03 S100
Spindle speed
G00 ... Select drilling position G00 Select drilling position
R2=5 Reference plane R2=5 Reference plane
R3=–30 Final drilling depth R3=–30 Final drilling depth
R4=0 Dwell in thread R4=0 Dwell in thread
R6=4 Direction of rotation for return .
R7=3 Direction of rotation .
R8=0 Thread with/without encoder .
R9=1.25 Pitch R9=1.25 Pitch
R10=10 Return plane R10=10 Return plane
L84 Call cycle G203 C180 Z S100 Switch to tapping without
compensating chuck
(Right-hand thread)
L84 Call cycle
L841
L84
Calculation of feedrate ...
Calculation of starting point of
deceleration
.
G33
Traverse to reference plane
Calculation of feedrate ...
Calculation of C axis path
G62
@373
G01 G90 rotary axis infeed axis
G64
.
M17
G205
Deselect tapping without
compensating chuck
G00, G60 and G90 remain active after the end of cycle L841. The feedrate must be
reprogrammed.
© Siemens AG 1991 All Rights Reserved 6ZB5 410-0HD02 4–63
SINUMERIK 880, (PG)

Siemens SINUMERIK 880 GA2 Specifications

General

Brand	Siemens
Model	SINUMERIK 880 GA2
Category	Control Unit
Language	English