Siemens SINUMERIK 840D

9
08.97 Path Traversing Behavior
9.5 Feed characteristic
,
FNORM
,
FLIN
,
FCUB
,
FPO
9
840D
NCU 571
840D
NCU 572
NCU 573
840Di

Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
9-329
Programming example
This example shows you the programming and
graphic representation of various feed profiles.
5000
Feedrate
4000
3000
2000
1000
N
1
N
2
N
3
N
4
N
5
N
6
N
7
N
8
N
9
N
10
N
11
N
12
N
13
N
14
N
15
Path
N1 F1000 FNORM G1 X8 G91 G64
Constant feed profile, incremental
dimensioning
N2 F2000 X7
Step change in setpoint velocity
N3 F=FPO(4000, 6000, -4000)
Feed profile via polynomial with feed 4000 at
block end
N4 X6
Polynomial feed 4000 applies as modal value
N5 F3000 FLIN X5
Linear feed profile
N6 F2000 X8
Linear feed profile
N7 X5
Linear feed applies as modal value
N8 F1000 FNORM X5
Constant feed profile with abrupt change in
acceleration rate
N9 F1400 FCUB X8
All subsequent, non-modally programmed F
values are connected via splines
N10 F2200 X6
N11 F3900 X7
N12 F4600 X7
N13 F4900 X5
Deactivate spline profile
N14 FNORM X5
N15 X20