G0 moves are slow and jerky within a 5 axis simultaneous tool path on HAAS TRT210

[myerswelborn]

I have a 3D contour toolpath that I am using collision avoidance on to machine a deep pocket with a ball mill.  The machine runs great and is smooth when actually cutting in G1, but when it retracts and repositions within the toolpath using G0 I get a slow jerky motion.  I have attempted to post with all high feed moves but now I am getting a lot of clamp/unclamps while the tool is in the cut. 

Any help with this?

[a.laasW8M6T]

The Haas control struggles with G0 combined linear and Rotary moves for some reason, most other controls don't have this issue.

The fix is to use highfeedrate mode so the rapids are output as G1 moves with a high feed rate.

You can set this per toolpath in the linking tab or Globally in the post processor settings in the NC program window

[myerswelborn]

I mentioned in the original post that I tried it with all high feed moves but got random clamp/unclamps while actually cutting in the contour toolpath, leaving small gouges in the part. Any way around this? I have rotary clamp turned on, but it says it is disengaged automatically during simultaneous axis motion.

[programming2C78B]

what post? You may have to simply deal with smoothing out your maximum angular motion etc to have the control be able to keep up. 

[myerswelborn]

Its the latest Haas NGC post from the Fusion Library.

How would I go about smoothing out the maximum angular motion? Is that CAM tweak or machine setting?

[a.laasW8M6T]

Apologies, I missed that in the original post.

I have tried posting out multiaxis toolpaths with the Haas post and am not seeing the clamp codes during cutting.

Can you upload a fusion file that exhibits this behavior?

The angular smoothing is a setting available in some types of 5 axis toolpaths

But I don't believe this setting has any effect on rapid moves.

[myerswelborn]

Unfortunately I edited the toolpath for this part to minimize retractions and do not have the nc code that was clamping and unclamping. I just let the rapid moves click along slowly. It wasn't a huge time increase but we have to get the parts out. I also cannot post the file on a public forum. In the future if I come across another example of this I will post it to this thread.

Thank you for explaining the angular motion smoothing. I ended up turning on regular smoothing before I read this post and it helped with some faceting in the surface finish.