crushed propeller

[jumpy]

Bye!

I wanted to know if someone had a better idea than ever (seriously yes :biggrin
I should draw a crushed propeller: see table attached.
I would like it to be parametric: that it is modified according to the propeller radius and step (as does the nx helical curve).
for the moment I made an assembly in which I have a part that is a half helix, which is attached "satiently" to the simby file and then draw of the segments that join the ends of the half helix. I then do a little wave geometry link, a little link between the variables of the various files and I have the parameterity.

does not exist a simpler way?

Thank you.

g.

 

[ceschi1959]

Hi, I'll put you a couple of pictures of a possible solution.
to know how I did, send me for dhl a fresh beer.:smile:
that proposal is a solution made with the combined projection, it is not said to be the one suitable for you.
the resulting curves are tangent and with constant inclination.
If you have to do something with real 'tube pieces', that is curves and commercial tubes, you cannot physically have this result.
I hope I've been helpful
Hi.

 

[jumpy]

very interesting as an alternative! Thank you!
for beer, if you walk from the conegliano parts, very gladly!

Hi.
g.

 

[Primizio]

See if that's good.

Greetings.

:wink:

 

[ceschi1959]

I saw the attached file.
There are things that don't come back to me:
1) the elix command I would not use it because it is parametric until a certain point (you can't set the start and orientation), if you try to rotate the propeller it all crashes.
2) the step is the distance between two homologue points you set it as a step of the semi-helm and I don't think this was the purpose.
I find the use of instance remarkable.

Hi.
c.

 

[Primizio]

1) the elix command I would not use it because it is parametric until a certain point (you can't set the start and orientation), if you try to rotate the propeller it all crashes.

Why should you turn the propeller and what would be the alternative to elix?

2) the step is the distance between two homologue points you set it as a step of the semi-helm and I don't think this was the purpose.

You're right. ,however it can be solved quite simply.

Please you can post the piece file made with the combined projection I did not understand your method well.

Bye.

 

[ceschi1959]

premise: in the first post I wrote an inaccuracy (ca@ata would be better!) that is that the 'tube' I made with the combined projection is at constant inclination. more precisely it is to constant inclination its projection (sorry).
place two files,
in one there is the method of combined projection that you could apply for example in creating a 'cooling device' on two tubes that can have any diameter and disposition (that is why I can have the need to rotate the propeller).
in the other there is the alternative to the elyx that I usually use. This is the curved law of which you can define origin and orientation. use, for example, to make variable step springs and/or variable radius.
to make you a comparison is more or less like making a hexagon with the appropriate command or doing it in sketches.
the files are in nx4 used by jumpy (in this version there is no instance geometry).
to finish:
in the thread open by jumpy I think of extreme interest the fact that the proposed solutions are all viable for modeling (and I think others still have solutions). some however can be more or less valid depending on the design premises and the goal you want to achieve (which yumpy did not specify).
It's about me (and I advertise) :smile: another example of the thread I opened on the correct use of 3d software.
I hope that the debate will continue. . .

Hi.
c.

p.s. my profile picture is a spiral wrapped on a bull made with low curves

 

[Primizio]

good baskets1959 you posted two very interesting files I put them aside, surely they will come back useful sooner or later.

Unfortunately in the pc I have only nx5 and nx6 .

Greetings.

 

[jumpy]

purtoppo is true, you will have noticed, my company is poor and we have only nx4 :frown: (in reality it is rica, with a "c", we also have nx6, but they do not let us use :angry then the primitium files do not open them (I will try to see if I can use a nx6)

Well, what do you say? I am from oscar!!! (other than beer!) are exactly what I wanted! parametric, simple and elegant, I wanted them so! :finger:
my application is a folded pipe with crushed propeller, so I do the propeller, I do an orthogonal section to the profile of the helix and then swept with method of constant vector orientation (and also here you have to thank again for his old post: if you come to find me drunk again from many beers that I have to offer you:biggrin

Thank you.

g.

 

[jumpy]

premise: in the first post I wrote an imprecision (ca@ata would be better!)

I'm almost sorry, but I have to give reason to baskets!! :biggrin:

I thought a projected propeller was a line, and instead not (image attached: the orange line is the propeller).

so rightly as he asked for baskets you have to see what I need...

a bent profile tilted (otherwise it closes on itself) on a bushing, what is it? a circle arc like the combined projection (it seems like a circle arc) or is it a propeller?

Hi.

g.

ps I think more a projection...