Turn Profile - Spin Vs Slice

[razor]

Using X4 - MU1

 

I noticed that when I am doing a lathe program and I use turn profile - spin, I don't get any arc, just lines. This could cause some problems. Am I doing something wrong?

 

And BTW, I know I can make the lines smaller, but I would really rather have arcs. But I what the functionality of the spin feature, not the slice.

 

Thanks

[Josh Kinney -Elite Engineering]

I've found spin to be very inconsistent. Slice works great.

[Hardmill]

quote:

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I've found spin to be very inconsistent. Slice works great.

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Be careful, make sure that your slice captures

all the needed feature.

 

"VERY CAREFUL" and yes it does work great.

 

 

PEACE

[razor]

So it sounds like that's just how it is huh? Well thanks for the help.

[Bob Hedrick]

Razor,

 

What tolerance are you using to create the profile? We have recently discovered that the arcs may not be created if you use a small tolerance: < .001 If your results aren't satisfactory at this tolerance, please send the file to [email protected].

 

Some notes on the Turn Profile 'Spin' option:

- The software first makes a polyline outline of the spun profile. This is about the only way to mathematically get an initial profile.

- It then tries to refit arcs used in the solid construction as well as the edge curves on the solid to the profile. - new in X4 MU1

- After this step it uses an arc fitting routine similar to toolpath arc filtering. - better filtering in X4 MU1

 

It will work better on solids with a history tree than it does on solid bodies with no CSG information.

 

The last arc fitting stage will never give 100% dead-on results, as it is working from solid surface information. However the results should be accurate to a higher precision than your machine tool, generally the 6th decimal place or better