ICAM Virtual Machine V19 - Kxcad.net

ICAM Virtual Machine ® Version 19.0 Using Virtual Machine Models with CeRun and Gener
Controlling Virtual Machine from the Part Program (Gener only)
2.2.2 Enable/Disable Collision/Overtravel Detection and Avoidance
The following ADAPTV command controls collision and overtravel detection and avoidance:
�SCAN
�
�AVOID
�
ADAPTV / PROTCT, � �
� �
�
ON
�
�OFF
�
AVOID is the default, which instructs VM to avoid those collisions that are avoidable 1 , and to
diagnose unavoidable collisions and any overtravel conditions. SCAN simply diagnoses collisions
and overtravel conditions, while OFF disables collision and overtravel testing altogether.
ON re-enables the last specified AVOID or SCAN setting. When active, collision and overtravel
diagnostic messages will be reported in the GENER listing file and the Console window, as
follows:
� Error #1409008: Simulation reported collision between object1 and object2.
� Error #1409009: Simulation reported overtravel: axis_name.
Path-planning based overtravel avoidance is automatically enabled in GENER during 5-axis
machining whenever LINTOL/SCAN (linearization path planning) or LINTOL/ROTREF (rotary
turn-around) are active. These commands are documented in the “CAM-POST V19 User Guide”.
When collision avoidance is enabled (AVOID), GENER uses VM during look-ahead scanning in
an attempt to find a tool path that is also collision free. If a good tool path does not exist (i.e., all
tool paths contain unavoidable problems), then GENER will report:
� Error #1409012: Simulation feedback reports that it is not possible to avoid collision or
overtravel.
From the perspective of the post processor, running with ADAPTV/PROTCT,OFF is equivalent
to running without VM at all. Exercise caution when using this command.
The ADAPTV/PROTCT command will have no effect if the VM was not activated when GENER
was first started, or if ADAPTV/OFF is currently in effect.
2.2.3 Enable/Disable Positioning Collision Avoidance
Positioning collision avoidance can be enabled under program control to avoid collisions that
occur during RAPID positioning motions. When enabled, a positioning collision avoidance
motion will be attempted when a collision occurs somewhere during a positioning motion, while
at the same time both the start-point and end-point of the positioning motion are collision free.
The collision avoidance motion includes an initial rapid retract along a specified machine linear
axis to position clear of the work, followed by a rapid motion along the other two linear axes to
the end-point position, and finally a rapid plunge of the tool to the end-point position.
1 Collisions with in-process stock cannot be avoided by path planning, however any such collisions will
be diagnosed.
10 ICAM Technologies Corporation – Proprietary