trouble milling non XY ligned face

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freman
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Posts: 2198
Joined: Tue Nov 27, 2018 10:30 pm

trouble milling non XY ligned face

Post by freman »

Hi,
I am trying to face mill a surface on a part which I have rotated 10 deg to fit two copies on to available stock the most efficiently.
There are two areas proud of this face and edge between these two is now aligned 10 deg off the x direction.

I can get the cut direction along the line of the part OK, but I don't seem to be able to mill all the lower surface ( ie upto the surfaces edges ) without eating into the raised parts.

If I was aligned along X I could probably just over step boundaries and then trim the path back with a boundary dressup. But I can't do a boundary that is suitably aligned here.

All I can think of is manually hacking FreeCAD output of the 3Dsurface path which is quite close to what I need.

Below is a snap of the face mill and 3D paths.

Any ideas ?

OS: Fedora 34 (Thirty Four) (LXQt//usr/share/xsessions/lxqt)
Word size of FreeCAD: 64-bit
Version: 0.20.26155 (Git)
Build type: Release
Branch: master
Hash: 0926a4148bcff11249fd4f56bc30256102ffe105
Python version: 3.9.7
Qt version: 5.15.2
Coin version: 4.0.0a
OCC version: 7.5.0
Locale: English/United Kingdom (en_GB)
Attachments
support-bodies.png
support-bodies.png (4.64 KiB) Viewed 1837 times
3D+millface.png
3D+millface.png (19.85 KiB) Viewed 1838 times
support-paths.FCStd
(219.94 KiB) Downloaded 13 times
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