How to chamfer a 2.5D profile in HSMWORKS/FUSION without using TRACE?

gmoushon · Feb 11, 2021

I'm trying to chamfer a 2.5D profile. When I use TRACE, it works, but it treats the ARCs as SPLINEs and programs a lot of data points which cause data-starving on my older control.

Is there a better strategy that would work?

Attached is a simple model to illustrate.

Thanks,
gm.

Shawnrs · Feb 12, 2021

gmoushon said:
I'm trying to chamfer a 2.5D profile. When I use TRACE, it works, but it treats the ARCs as SPLINEs and programs a lot of data points which cause data-starving on my older control.

Is there a better strategy that would work?

Attached is a simple model to illustrate.

Thanks,
gm.View attachment 313493

I don't know fusion but is there a way to offset a 3d sketch of the chamfer and force fusion to follow that sketch?

jz79 · Feb 12, 2021

Trace is what you can use to follow an edge or 3d sketch, but it will not output arcs (most of the time), at least that is what I was able to find out searching AD forums, enabling smoothing and playing with variables may reduce the size of the code, but you may simply end up with less line segments, not true arcs

2d contour with zero offset may be used in a single plane to follow a sketch for chamfering, that will output arcs as arcs, but thats 2d...

gmoushon · Feb 12, 2021

Thanks for the replies. I do all my modeling in Solidworks and CAM it out using HSMWORKS, which uses the same engine as Fusion. I did go ahead and post the same question on the Fusion site and was told by one of their "Fusion 360 CAM Specialists" that TRACE, unfortunately, will output ARCs as SPLINEs. They suggest combining strategies.

Seems silly to me. I would think it would be a relatively simple change to make TRACE recognize ARCs....but I'm not a programmer.

Thanks everyone.
gm.

Finegrain · Feb 12, 2021

How about splitting it up? Do the sides as 2.5D and the ends as 2D.

Regards.

Mike

gmoushon · Feb 12, 2021

Finegrain said:
How about splitting it up? Do the sides as 2.5D and the ends as 2D.

Regards.

Mike

Thanks Mike and yes, that is exactly what I've had to do. It's not that big of a deal. It's just that the actual part is rather complicated and has multiple 2D, 2.5D and some 3D contours so the chamfering process of the CAM is getting messy. I was looking for an easier way to accomplish the same thing. TRACE works great, except for the data-starving issue.

Gaylan.

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