Compensation At The Outside Corners (G450, G451, Disc) - Siemens SINUMERIK 840D sl Programming Manual

Tool radius compensation

10.3 Compensation at the outside corners (G450, G451, DISC)

10.3 Compensation at the outside corners (G450, G451, DISC)
Function
With tool radius compensation activated (G41/G42), command G450 or G451 can be used to
define the course of the compensated tool path when traveling around outside corners:
With G450 the tool center point travels
around the workpiece corner across an arc
with tool radius.
Note
G450/G451 is also used to define the approach path with KONT active and approach point
behind the contour (see "Contour approach and retraction (NORM, KONT, KONTC, KONTT)
[Page 287]").
The DISC command can be used to distort the transition circles with G450, thereby producing
sharper contour corners.
Syntax
G450 [DISC=<value>]
G451
294
With G451 the tool center point approaches
the intersection of the two equidistants,
which lie in the distance between the tool
radius and the programmed contour. G451
applies only to circles and straight lines.
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Fundamentals