Bug report - Machine Simulation Issue with Hurco Post Processor (Autodesk Fusion Library)

[laromosrl]

Hello,
I would like to report a malfunction related to the machine simulation feature in the Hurco post processor. I am using the post processors available in the official Autodesk library.

During the simulation of tool retraction and repositioning (as shown in the attached image), Fusion returns a simulation error. This suggests that there may be an issue with the configuration of the movements generated by the "machineSimulation" function in the Hurco post processor, an issue that does not occur when using the Fanuc post processor with the same machine configuration and toolpath.

Attached you will find:

• A screenshot of the simulation using the Hurco post (with error)

• A screenshot of the simulation using the Fanuc post (no error)

• The CAM project to reproduce the issue

I kindly request a thorough review and correction of the Hurco post processor to ensure full compatibility with machine simulation in Fusion.
Thank you.

https://a360.co/4dBHWqk

[laromosrl]

For further clarity, I would like to add the following detail: the cause of the issue lies in the linking operations between one toolpath and another. Specifically, the tool change and repositioning operations—handled by the post processor—generate the highlighted purple line that exceeds the machine's travel limits. It is not possible to directly modify these linking moves (purple lines) from within Fusion, and the only solution would be to generate a toolpath that avoids the conditions that cause the error.

Image attached.

[Tomek.G · Accepted solution]

Thank you for reporting this @laromosrl,

I can confirm that this operation is triggering an Overtravel error during the simulation.
Have you tested it on the actual machine? During this move, a special ASR command (G8.2) is active.

ASR is an internal command buffer within the control that automatically repositions the machine to a specified target point without overtraveling in any axis. Since the ASR command causes the machine to find the most optimized path to the new target point by creeping along the machine travel limits, we cannot simulate it accurately.
Extra caution is needed during this move to ensure there are no collisions.

[laromosrl]

Hi,

thank you for your response and support.
I encountered some machine configuration issues, as well as incorrect tool change positions.
For this reason, I wasn't able to directly verify the behavior on the machine under those specific conditions.

I accept the proposed solution, and if the issue occurs again, I will open a new topic.
Thanks again.