Siemens SINUMERIK 802D sl Programming Manual

Movement Control Commands
3.4 Cutting feedrate control
04.07
3-68
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SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
3.4 Cutting feedrate control
3.4.1 Automatic corner override G62
It is often better to reduce the feedrate at inside corners with active tool radius
compensation.
G62 is operative only at inside corners with active tool radius compensation and
active continuous--path mode. Any corner whose inside angle is higher than the
setting in $SC_CORNER_SLOWDOWN_CRIT is ignored. The inside angle is de-
termined by the bend in the contour .
The feedrate is reduced by the factor $SC_CORNER_SLOWDOWN_OVR:
Applied feedrate = F * $SC_CORNER_SLOWDOWN_OVR * feedrate override.
The feedrate override is the product of the feedrate override from the machine con-
trol panel multiplied by the override from synchronized actions.
The feedrate reduction starts at a distance of $SC_CORNER_SLOW-
DOWN_START before the corner . It ends at a distance of $SC_CORNER_SLOW-
DOWN_END after the corner (see Fig. 3-16 ). An appropriate path is traveled on
curved contours.
Feedrate reduction at corner
x
y
Layer to be milled off
$SC_CORNER_SLOWDOWN_START
$SC_CORNER_SLOWDOWN_END
Inside angle ± $SC_CORNER_SLOWDOWN_CRIT
Tool center point path
Path s
Tool path velocity v
$SC_CORNER_SLOWDOWN_START
$SC_CORNER_SLOWDOWN_END
F * $SC_CORNER_SLOWDOWN_OVR
F
Workpiece
Fig. 3-16 Parameterization of feedrate reduction G62 illustrated by example of a 90_ corner

Siemens SINUMERIK 802D sl Specifications

General

Brand	Siemens
Model	SINUMERIK 802D sl
Category	Controller
Language	English