Screw with different pitch

[sitia]

hello,

knows anybody how i make a sketch like photo?

george

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[Dave R]

Do you know how the pitch changes with the length? What is the thing?

[mitcorb]

Is that a drill or a bearing race?

[sitia]

Happy new year
this is a part from labeling machine.
the length is 500mm and the diameter is 100mm.
thank you all
george

[mitcorb]

If this is a part from a labeling machine, is it for kerning/spacing?

[Dave R]

I wonder if TIG's Grow plugin could make two helices which have increasing pitch as they go up and then use his Extrude Tools to create the faces.

I'll see if I can give it a go but I have a couple of projects ahead.

[gilles]

This is in use in industry for conveyor:
[flash=425,344:2fzqjq11]http://www.youtube.com/v/9MSO2jcy1GQ[/flash:2fzqjq11]

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