construction lines

[kellyWT9NF]

Question on removing construction line that is associated with each of the control splines. I attached the file as well. Each of those partial loops above and below the oblong holes you can see the squared off lines attached to each loop. When I open this is manufacture and attempt to lay out the paths to burn I select the loop but it selects each of those squared off construction lines as well.. and thus it thinks I want to burn the construction line out too. I've tried removing the construction line but then the loop becomes distorted.

Any help would be much appreciated. 

[davebYYPCU]

Control point Splines come with those construction lines as default and should not be interfered with.

You might try selecting the body outlines, and not the sketch.

(not opened the file yet.)

Might help...

[laughingcreek]

The construction lines being recognized as possible tool paths I would consider a bug.  at least inconsistent with how fusion works in the design space.  @jeff_strater - who should this be directed to?

to work around you can create a second sketch and project those curves in to it.  these won't have the control frame.

I would suggest only drawing the curve once, and patterning the tool path in the manufacture area, but tool path patterning doesn't have the suppress feature in it like you have in the design area.  another unfortunate oversight.

[jeff_strater]

@seth.madore - the summary here is that the control frame of a CV spline seems to be selectable as tool path geometry.  Is that intentional?

[seth.madore · Accepted solution]

No, it's not. I logged this a couple weeks ago as CAM-41377.

An easy workaround is to press the ALT (or Option on Mac) key and select your spline, it should select only that

[kellyWT9NF]

Thanks for all the help. I used the 'alt' button and was able to select just the geometry I was after without the construction line. So yes that was an easy enough work around! However I noticed that despite not selecting lead-ins and lead-outs its still putting a lead-in at the start of this tool path. You can see the lead-in on the image here. I attached the file again as well. Is there a way to correct this? Also is it possible to correct or change a 2D profile... say to add lead ins or remove lead ins.. or change the cutting speed without having to completely re do the entire profile?

[seth.madore · Accepted solution]

That's your "Pierce Clearance". Set it to zero and force regenerate the toolpath (CTRL+G). Result:

 

[seth.madore]

And changing the cutting speed is just a matter of changing the feedrates in the toolpath, no need to start over. 🙂

[kellyWT9NF]

Thanks for clarifying the "pierce clearance". For some reason I was in belief that was the distance between the torch head and the surface of the work material. I was further in belief that be unselecting the lead-in box that there would be no lead-in. I would assume there is some reason to have a lead in as well as this pierce clearance.. Im sure in good time I will realize what that is for!

So I did try changing that pierce clearance and then using the  control + G however it would not play any effect. I redid just a small sample on another 2D profile while selecting the PC to zero and that worked great and it started to cut exactly where needed. So thank you!

However, I noticed a new issue that is difficult to explain. I will attach another file again if you could run the 2D profile in cutting simulator you will see what I believe would be a problem when trying to cut this. The first short stretch of the cutting process the torch head appears to toggle on and off sporadically. Once out of that section it seems to cut just fine. It was doing this on the other file I had uploaded earlier and thought there was just some poor connections which I was unable to locate so I simply removed the entire stretch of those loops, copied another stretch from above, and then rotated down into place. Unfortunately it is responding the exact same way. 

[kellyWT9NF]

Perhaps I'm trying to make those changes in the wrong spot. For example if I wanted to change a cut speed or add a geometry that I may had missed to a previously created profile I have been clicking on that profile under the setups tab to open the profile back up.. then make any changes.. click ok in the profile box.. but it doesn't seem to take my changes. So I've numerous times had to recreate many profiles.

[kellyWT9NF]

Attaching another screenshot showing what the tool path is doing on other parts of this. It seems as though all the issues Im having is getting a tool path down an unclosed control point spline. Ive not had much if any issues creating tool path down regular splines. Could this be a bug in the system? 

As to my above question on the previous reply I was able to get the tool path to come out correctly by merely creating more 2D profiles (less cuts per profile). Hardly seems like this should be of issue for this program???.. any thoughts