Smoothing The Path Velocity - Siemens SINUMERIK 840Di sl Programming Manual

Path Action

5.5 Smoothing the path velocity

Example
Dynamic values by technology group G code
DYNNORM G1 X10
DYNPOS G1 X10 Y20 Z30 F...
DYNROUGH G1 X10 Y20 Z30 F10000
DYNSEMIFIN G1 X10 Y20 Z30 F2000
DYNFINISH G1 X10 Y20 Z30 F1000
Write or read specific field element
Maximum acceleration for roughing, axis X
R1=$MA_MAX_AX_ACCEL[2, X]
$MA_MAX_AX_ACCEL[2, X]=5
5.5 Smoothing the path velocity
Function
A smoother path velocity profile can be achieved with the "Path velocity smoothing" function,
which allows special, configurable, machine data and the character of the parts program to
be taken into account.
The velocity control function utilizes the specified axial dynamic response. If the programmed
feedrate cannot be achieved, the path velocity is brought to the parameterized axial limit
values and the limit values of the path (velocity, acceleration, jerk). This can lead to repeated
braking and acceleration on the path.
Note
Machine manufacturer
The user can control the path velocity as appropriate for the configurable machine data by
making use of the program properties.
References: Functional description /FB1/; B1; "Smoothing the path velocity"
220
;Initial setting
;Positioning mode, tapping
;Roughing
;Finishing
;Smooth-finishing
;Read
;Write
Programming Manual, 11/2006, 6FC5398-1BP10-2BA0
Fundamentals