topic Re: Ramp in Fusion Manufacture Forum

Ramp

laughingcreek — Sun, 11 Jan 2015 00:41:52 GMT

I'm trying to use a zigzag ramp in a 3d pocket clearing operation. When zig zag is selected, the options shown are for a helix type, and that also the type of toolpath created.

Re: Ramp

fonsecr — Sun, 11 Jan 2015 01:05:00 GMT

It will try to make zigzag ramps when possible. However, for 3D Pocket the behavior is currently such that it will fallback to helical ramp if there is no room for the zigzag ramp. I'll follow up on this one.

2D Pocket wont fallback to helical ramp.

Re: Ramp

laughingcreek — Sun, 11 Jan 2015 01:56:56 GMT

There is plenty of room for zig zag motion, the tool is entering in the center of the area to be cleared out. Also, the parameters for the operation are still for a helix type move even though zigzag is selected.

Re: Ramp

HughesTooling — Sun, 11 Jan 2015 11:49:39 GMT

It seems to fall back to a helix a lot, I don't think I've got it to use anything else. Here's a simple example, I've set the ramp to profile but it uses a Helix even though profile should work.

http://a360.co/14IhojL

Another problem in the file for some reason it creates 2 levels even though I've set the maximum step down to 15mm, how can I get just one level. I've had this happen a few times and the only way I've got 1 level is to set the Top Height to -1 of something.

Also what does the warning on the toolpath mean and what have I set wrong.

Thanks mark.

Re: Ramp

fonsecr — Sun, 11 Jan 2015 13:30:18 GMT

Yes, when there is room for the helical ramp it will be preferred over the zigzag ramp. It will work as expected in one of the following updates.

Re: Ramp

laughingcreek — Sun, 11 Jan 2015 15:33:09 GMT

fonsecr-Thanks, I always hesitate to say something because the problem is usualy something I'm doing wrong. Glad it will be addressed in future update.

Re: Ramp

laughingcreek — Sun, 11 Jan 2015 15:40:09 GMT

I get that error all the time! I think the error mesage should say "lift", and not "lifting". In anycase, raising the retraction plane to 17mm (because your safe distance in linking is set to 16mm) clears the error.

Re: Ramp

fonsecr — Sun, 11 Jan 2015 15:53:18 GMT

It is only a warning indicating that the heights specified have been lifted automatically to account for the specified model and settings. It can normally be ignored. However, in some cases you could get out of limit errors on the CNC machine if the Z is too high.

Re: Ramp

HughesTooling — Mon, 12 Jan 2015 11:45:33 GMT

@laughingcreek wrote:
I get that error all the time! I think the error mesage should say "lift", and not "lifting". In anycase, raising the retraction plane to 17mm (because your safe distance in linking is set to 16mm) clears the error.

Thanks, I hadn't realised the linking distance was being added to the ramp height, I don't think it should be though. I think I'll start another thread and ask some more questions.

Mark