Problems with multi-axis contour

[5X-machines]

Hey everyone,

I am trying to program a simple straight cut that transitions into a wrapped helix (see picture below) on a 4-axis lathe. Multi-axis contour does a fine job on the helix portion but fails miserably on the straight section and initial curve. Ideally I would like it to all be cut in a single operation.

Does anyone have any tricks for getting this to work?

I was thinking if I could project the centerline of the path onto the bottom of the radius (similar to the curve I have selected for the helixed portion, it should work. However, I do not know how to do that. I have also attached a copy of the file.

[Anonymous]

I massaged it into compliance as best as I could, there is a small misalignment at intersection of spiral and curved groove on model so I think I found best compromise.

[Anonymous]

One correction, I am not disputing fact that multi axis strategy is not working, I was just looking for way to get result using another approach.

[Anonymous]

have you tried 4th axis wrapping a 2d contour?

[Anonymous]

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@Anonymous wrote:

have you tried 4th axis wrapping a 2d contour?

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No I haven't, I run lathes and mill-turns as primary equipment so my interest is always in that area first.

I assume if you set the part as milling job you would end up with A axis replacing C axis as the only deference in outcome.

[Anonymous]

There you go.

[Anonymous]

look at that...Ill bet a 4th axis wrapped 2d contour....

[Anonymous]

Yeah, I am goofing with things I don't normally do, just to gain skills. I think I had X and Y axis pointing the wrong way after conversion from mill-turn to 4th axis mill.

I think new file is correct, check it out, let me know.

[Anonymous]

yes that looks good.