GearHeads Forum

ArtF wrote: After a Win10 update

WinHozed

Kirk:

  The reason an Acme should work is that its profile is basically a rack. It has a 30 degree angle
and its depth is unlike other threads in that its 1/2 pitch. So a helical spur at the correct helical angle
should mesh as a worm.. that all that post meant, its why I noticed the thread was wrong on the acme.

  Im considering a worm gear addon for it though.

(Im a bit slow this week, had major system crash and am rebuilding. After a Win10 update
my harddrive suddenly was inaccessable.)

Art

Would a mod 2 work on the rather common T8-something 2mm pitch screws then?  I'd assume the angle would have to change based on the number of starts but the pitch/mod should remain the same.

Kirk

Re: Nuts & Bolts (ticker.exe)

Thanks ever so much.

A Mod4 helical spur gear should work on a 4mm pitch acme screw as a worm gear pair.


Thanks Art.

ArtF wrote: Hi Andy:

   If you select your first section, youll see the setting for "flats" is smaller than the shaft diam.
The "flats" is the size of the wrench for that nut, slide the flats larger till the nut is large enough.
That will fix it.

Thx
Art

oops I missed that. Worked perfectly. 

Thanks,

Andy

Hi All:

  Just a note to those that may have tried ACME screws, there was a bug I just found that made their tooth profile
wrong. It will be  corrected in the next release. A Mod4 helical spur gear should work on a 4mm pitch acme screw
as a worm gear pair and I noticed the profile was very wrong for that.

Thx
Art

Hi Andy:

  If you select your first section, youll see the setting for "flats" is smaller than the shaft diam.
The "flats" is the size of the wrench for that nut, slide the flats larger till the nut is large enough.
That will fix it.

Thx
Art

I was trying out the complex shafts to create a joined left/right thread with a nut. The shaft generates but the nut seems to have a problem.

I have attached the files. Am I missing a setting?

Thanks,

Andy

Thanks Randy:

Still some little bugs in there for sure. I think the sphere may be trying to be too hi res and slowing you to a crawl.
Ill work on that. It tries to keep resolution very high as  sla printers can work with very small sizes. It Automatic
but not quite that smart yet.

  Also, just an FYI, blender will not open the objs, not sure why yet, but Cura, and meshlab have no trouble.


Thx again
Art