Problem with multi-axis machining of concave surfaces.

[biuroAQYUD]

I don't know how to deal with this. When using the multi-axis finishing strategy, it machines the sphere correctly (it starts at the top and ends at the bottom, changing direction with each rotation), but it machines the concave surface terribly, and in the simulation it makes some strange spirals and there are defects in the material.

However, when I use the flow machining strategy, there is a problem because after the first 360-degree rotation, it does not lower and machine in the opposite direction, but wants to do a REWIND, i.e., it lifts up, rotates at the top, and only then moves again. The direction is set in both directions.

This is strategy flow with multiaxis, all is great but that REWIND is a problem:

This is multi axis finish strategy for sphere, good (take a note it makes 360 degree CW, goes 0,1mm down and makes 360degree CCW). No waste of movement (green line) and is supper efficient:

This is multi axis finish strategy for concave, very bad:

This is multi axis finish simulation with machine for concave, very bad:

This is multi axis finish simulation with machine for concave but different angle, very bad:

PS. ZIPed file (5 osi testy v2.zip) is enclosed *.F3Z type of file for review.

[a.laasW8M6T · Accepted solution]

Hi

I think the Problem with the Toolpath Is you have it set to both ways, I cant verify if its better with Climb milling as when I try to calculate it I run out of RAM.

I think the Geodesic Toolpath is More suitable for this geometry anyway.

You are always going to run into issues with a continuous toolpath and a Head/Head machine as it will have to stop and reconfigure all the time.

See attached

[biuroAQYUD]

You are right. After using the Geodesic strategy you suggested, everything went almost according to the default settings.