5Ax Flowline

[McRae]

Mill/Turn operation. Using a "Bull Nose" style tool create a radius on the edge of an extrusion screw. The first cut, where the blend radius meets the outside diamter of the screw flight, the cutter is jumping back and forth across the flight instead of remaining tangent.

 

After the first pass, the cutterpath is stable and will produce a good result. My question is, should I modify the geometry of the blend radius to acount for this error or is there some settings I should be looking at with Flowline??

[Guest CNC Apps Guy 1]

Try changing your tolerances (to like .0001) and or stepover (.0001 scallop height) and see if this helps. It often helps me to keep the tool down in flowline passes.

[Glenn Bouman]

Is it a trimmed surface? You may want to try it on the untrimmed surface.

[McRae]

Glenn,

 

It is that odd radius surface at the top of the lock face. We used a ballmill and I wanted to switch it out for a bullmill with undercut relief to profile the whole thing, but the first cut jumps all over. I will try the tolerance and get back...