topic Re: Parallel strategy faulty toolpath in HSM Support Forum

Parallel strategy faulty toolpath

m.breurather — Wed, 03 Apr 2019 08:43:16 GMT

Dear HSM community,

in my recent part, I noticed a very strange fault within the parallel toolpath.

When I simulate the toolpath, it looks like this:

F360 simulation

When machining this part, the machine behaved strangely (or so I thought). After checking all settings again, I tried comparing the simulation with NCViewer. This is what I get there:

NCViewer sim

As you can see, the toolpaths clearly do not match. I have a customized post processor for my EMCO ConceptMill 250, which is a HMIOperate type controll. It is based on Autodesk's provided Siemens Sinumerik 840D. Both post processors return the same ncviewer simulation.

What went wrong?

Best,

Moritz

Re: Parallel strategy faulty toolpath

seth.madore — Wed, 03 Apr 2019 11:49:49 GMT

Can you share the file or at least the g-code?

What flavor of HSM are you using, Fusion, Inventor, HSMWorks?

Re: Parallel strategy faulty toolpath

m.breurather — Wed, 03 Apr 2019 13:45:49 GMT

Of course - please see attached file.

EDIT: The plattform is Fusion 360, and the forum won't let me upload my .mpf file (gcode). The parallel toolpath is the last in the Setup.

Regards,

Moritz

Re: Parallel strategy faulty toolpath

lenny_1962 — Wed, 03 Apr 2019 14:19:38 GMT

Here is a suggestion.

turn the path 90 degrees you'll get a nicer part and the all the steps are linear.

this may help you get around the current issue until fixed, but still it's a better way IMO.

Re: Parallel strategy faulty toolpath

seth.madore — Wed, 03 Apr 2019 14:59:40 GMT

I agree with @lenny_1962 . However, another suggestion would be to turn off Smoothing. This is what I get with it off:

Granted, it's almost 2.25 times the size of code....

I think this is a post process issue. I will raise it with that team and get back to you

Re: Parallel strategy faulty toolpath

m.breurather — Wed, 03 Apr 2019 15:20:30 GMT

Thank you both for your answers.

The non-smoothing setting fixed the issue - however, my machine is very sensitive to loads of code, so I won't be using that. Instead, the 90 degree variant sounds pracitcal - I will try that.

Thank you!

Regards,

Moritz

Re: Parallel strategy faulty toolpath

AchimN — Mon, 01 Jul 2019 09:11:04 GMT

Thanks for bringing this to our attention.

I´ve updated all generic siemens posts regarding arcs on non XY planes. The output of your sample file looks now correct. Maybe you have a chance to double check that with the simulation on the control directly.

Re: Parallel strategy faulty toolpath

m.breurather — Thu, 04 Jul 2019 17:50:16 GMT

Thanks! Awesome to see that even after such a long time you guys still work on that.

I do no longer have access to the machine, but I may be able to get a Sinumerik simulation software. I will try to check it out.

Best,

Moritz