Fagor 8055 EN, Programming Manual

Page: 146 / 482

·146·
Programming manual
CNC 8055
CNC 8055i
8.
TOOL COMPENSATION
·M· & ·EN· M
ODELS
S
OFT
: V02.2
X
Col
lision
d
e
tecti
on (G4
1
N, G42 N)
8.3 Collision detection (G41 N, G42 N)
Using this option, the CNC analyzes in advance the blocks to be executed in order to detect loops
(profile intersections with itself) or collisions of the programmed profile. The number of blocks to be
analyzed (up to 50) may be defined by the user.
The example shows machining errors (E) due to a collision in the programmed profile. This type of
errors may be avoided using collision detection.
When detecting a loop or a collision, the blocks that caused it will not be executed and a warning
will be issued for each loop or collision eliminated.
Possible cases: step on a straight path, a step in a circular path and tool radius compensation too
large.
The information contained in the eliminated blocks, not being the moving in the active plane, will
be executed (including the movements of the axes).
Block detection is defined and activated with tool radius compensation functions G41 and G42. A
new parameter N (G41 N y G42 N) has been added to activate the feature and define the number
of blocks to analyze.
Possible values from N3 to N50. Without "N", or with N0, N1 and N2 , it behaves like in older versions.
In CAD generated programs that are made up of lots of very short blocks, it is recommended to use
very low N values (around 5) so as not to jeopardize block processing time.
When this function is active, the history of active G functions shows G41 N or G42 N.