Derived Operation BUGS.

[HughesTooling]

Here's a couple of bugs with Derived Operation.

One. If you have a folder active the operation is not created in that folder it is created in the main setup.

Two. If you create a 3d contour as a derived operation from 3d Adaptive and set the stepdown to less that the fine stepdown in the Adaptive op you get this error.

Error: (fineStepdown > 0.0) and (fineStepdown <= maximumStepdown)

The trouble is there is no fine stepdown in the 3d contour so you can't fix the error, therefore you can't create a 3d contour op from an adaptive op.

Mark

[Steinwerks]

I have found that Derived Operation is generally pretty hit-and-miss and have pretty much quit using the feature entirely. There are a lot of issues with the missing variables between toolpaths.

[jeff.pek]

Hi -

I see the problem with the folder. We'll get that reported and fixed.

But, so far I'm unable to reproduce the problem with 3d Contour. I do see that the fine stepdown parameter is hidden is 3d Contour; not sure why that is. Will poke at this a bit.

Jeff

[jeff.pek]

Turns out that the folder problem has been around for a long time -- originally reported and being tracked as CAM-3198. I'll see if I can nudge the priority on this one.

[HughesTooling]

@jeff.pek Here's a sample file. If you make the stepdown more than 2mm the 3d contour will generate, fine stepdown in the adaptive is 2mm.

Mark

[jeff.pek]

Thanks, Mark. Now I see it. I don't know why I wasn't able to create the situation when I tried. Will get it reported.

BTW, we have a fix for the other derive issue re folders. This should be in next month's update (it also affects Inventor). There was a partial fix for this some time back (CAM-1402); this remaining aspect was missed in that fix.

[jeff.pek]

You should be able to fix the issue regarding 'fineStepdown' using Compare and Edit.

If you select both of the operations (Adaptive & Contour), the "Fine stepdown" parameter will show up (since it's not hidden for adaptive). If you change its expression in the Contour operation to "maximumStepdown", then the check will pass and the toolpath should be generated successfully.

I'm checking whether it makes sense to just do this unconditionally in the case when this parameter is hidden, but this should get you past this issue.

Jeff