Any relation with GEB ?

Hi Pilou!

...what is it "GEB"?

Hi Pilou,

Yes actually I was referencing Douglas Hofstadter's intriguing book.

James

>>>GEB

G: Kurt Gödel -> destroys the hope of closed axiomatic mathematics - Cantor and Hilbert were crying:-(
E: M.C. Escher is not a DJ
B: Johann Sebastian Bach would Need a DJ

LOL :)

Hi All,
need a bit of basic advice.
I want to create a nod to divide a curve and apply a twist for the given sections.
This will give a variable pitch helix but a constant pitch radially.
Not sure if I need to create the sections individually or if I can produce the curve
then divide (trim) it into sections but then how do I index thro the sections.
Cheers
Barry

Hi Barry and Friends
this is my last reflection about
the exact execution of a Globoid Worm Gear ...
1- first of all we must start from the gear wheel we want
be moved
2- we draw the wheel with the Max Plug, asking for output
also the Pitch Circle
3- we extract the profiles of the teeth and reposition them in a manner
fair to the outside, considering them as teeth
of the rotating helical shaft
4- We create an arc of circle that has as referents the centers of the various
sections of the teeth of the shaft
5- We create a Sweept that has the teeth as profiles and as rail
the spiral formed with reference to the circle arc
6- join the section of the Shaft at Swwept

Work completed
at this link :
http://www.mediafire.com/file/4pctkf2pd0rdhxd/Globoid_Worm_Gear.zip/file
the files and some pictures
best
alberto

Hi Alberto,
thanks for posting your nod file but I think the sweep is not giving the correct result.
I projected a line onto the worm to get a cross section and found the tooth profile on the left not correct.
Perhaps a 2 rail sweep would correct it ?
Many thanks
Barry

Hi Barry and Friends
I saw your post in response yesterday , I double-checked and actually
the profiles positioned on the rail did not maintain the angular relationship
(usually, using Catia, I have this default option
for the Rib ... tool in Ambient Part Design)
but Moi is another thing ...,
so, I changed the method, I increased the profiles positioned
along the rail, positioning them consistently in the four axes ...
I think the result is satisfying ...
I tried to do a little animation too
file at this link:
http://www.mediafire.com/file/rp6f9d9awfd5c3r/Globoid_Worm_Gear.rar/file
Have a nice day to all
alberto

Hi Alberto,
looks good thanks. I'm still experimenting with the nodeeditor and with it having no tutorials struggling
to understand how some of the nodes work. I have developed a spreadsheet to generate the points of the globiod helix curves for the cam slot as FDP http://moi3d.com/forum/index.php?webtag=MOI&msg=8986.1 I I would like to do it with the nodeeditor but don't know how to input the calcs into a list could do with a very basic example.
Cheers
Barry

Hi All,
I imported a point file with Michael's script and got the result in red using the thro points option.
I imported the same file in the nodeeditor plugged it into the curve node and got the black result.
There are a lot of settings in the csv file node that I don't understand, do I need to adjust them to
match the red curve?
Cheers
Barry

Hello Barry,

the numbers for x,y,z ... are the positions of the values in the file. x=0,y=1 ... . -1 means no Evaluation. If you have a file with comments, then you can choose from which Position the file should be parsed - S Phrase -> start Phrase | E Phrase end Phrase.

I think the Problem is in the curve node you have used -> Switch from curve to Interpcurve in the info Panel.

Hope that helps!

Have a nice day
Karsten

e.g.:

#File

Number x y z
1,7,5,3
2,3,5,7
3,4,98,6
end

You would set:

x=1
y=2
z=3

start Phrase is Number x y z
end Phrase is end

The leading line numbers would not be evaluated.

Hi Barry and Friend ,
Sending another method for building the Globoid Worm Gear-
We build the rotating shaft starting, this time,
from the four helix positioned in the points
of discomincteness of the teeth .....
The result seems good to me, but it must be said that for the
construction of this type of gears
we must conform to the parameters that govern
gear shaping, including tolerances, etc etc.
the posted one wants to be just an example of the methods
of construction ...
far from the mechanical precision imposed on the gears
the file at this link:
http://www.mediafire.com/file/v5avcjbz2ax2pwe/Four_Helix_Mod_x_Globoid_Worm_Gear.rar/file
Good depth
have a nice day to all
alberto

Hi Karsten,
I have tried changing the curve type no good it seems that the curve which should be centred on the origin
is of to the right.
Have you tried the file I posted if not can you have a look as I am only saving the X/Y/Z coordinates ?
Many thanks.
Barry

I

Hello Barry,

I can't find files!?! Excel, csv, 3DM .nod ??? Please give me a hint :-)

Hi Karsten,
It’s attached to the message you answered.
http://moi3d.com/forum/index.php?webtag=MOI&msg=7777.1160
Barry

Hi Alberto,
I am missing the network node so can you post it.
Barry

PS: found the network node thread can now study your nod.

Hi Barry
at this link:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7777.1075
you can find Network and other ex
have a nice day
al