8
04.00 Tool Offsets
8.3 Online tool offset PUTFTOCF
PUTFTOC
FTOCON
FTOCOF
8
840D
NCU 572
NCU 573
840Di
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Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA)
−
04.00 Edition
8-273
Programming example
Task
On a surface grinding machine with the following
parameters, the grinding wheel is to be dressed by
the amount 0.05 after the start of the grinding
movement at X100. The dressing amount is to be
active with write online offset continuously.
Y: Infeed axis for the grinding wheel
V: Infeed axis for the dresser roll
Machine: Channel 1 with axes X, Z, Y
Dress: Channel 2 with axis V
Dressing roll
Workpiece
Grinding
wheel
0.05
Y
X
100
Machining program in channel 1:
%_N_MACH_MPF
…
N110 G1 G18 F10 G90
Basic position
N120 T1 D1
Select current tool
N130 S100 M3 X100
Spindle on, travel to starting position
N140 INIT (2, "DRESS", "S")
Select dressing program on channel 2
N150 START (2)
Start dressing program on channel 2
N160 X200
Travel to destination position
N170 FTOCON
Activate online offset
N… G1 X100
Continue machining
N…M30
Dressing program in channel 2:
%_N_DRESS_MPF
…
N40 FCTDEF
(1,
–1000, 1000, –$AA_IW[V], 1)
Define function: Straight line
N50 PUTFTOCF (1, $AA_IW[V], 3, 1)
Write online offset continuously:
Length 3 of the current grinding wheel is
derived from the movement of the V axis
and corrected in channel 1.
N60 V–0.05 G1 F0.01 G91
Infeed movement for dressing, PUTFTOCF
is only effective in this block
…
N… M30
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