straight teeth and helicoidal wheels

[alphacentauri87]

Hello everyone, they are just registered
I am a student of engineering, and we must realize a project where there are wheels dentate to straight and helical teeth (not conical) which we must draw them in 2d and 3d on autocad

autocads are still in the beginning, but something I can do is not really white.. we say on the scale of the grids:biggrin:

first open this discussion I did a search on the forum to see if topic was discussed, and I found these two discussions:
http://www.cad3d.it/forum1/showthread.php?t=7715&highlight=ruote+dentate
http://www.cad3d.it/forum1/showthread.php?t=496&highlight
http://www.cad3d.it/forum1/showthread.php?t=6764&highlight=ruote+dentate

vi dico cosa ho fatto, ho scaricato il file ed caricato i .lsp
adesso in autocad (versione 2012) mi da questa dicitura:

truegear lisp coftware copyright (c) 2002 eugeny kalney
use command invf to calculate values of involute function.
use command rotini to select objects for animation then rotgo or rotrev
to look at animation of created gear and generating rack meshing;
type first tooth to create gear tooth profile.

che devo fare per realizzare le ruote che mi servono?? a cosa si riferiscono i comandi?

grazie infinite :finger:

 

[numero1]

Well just go to google translations and ask him the translation right:

use invf command to calculate the values of the evolving function.
use the rotini command to select objects for animation then rotgo or rotrev
to watch animation of created tools and rack mesh generation;type of first tooth to create tooth profile gearsI don't know that lisp and it's a bit that I don't make a wheel, but I'd say that the lisp you loaded has a series of commands to do what you ask.
but is in particular the phrase in fat what you need, that is, you must draw at least one tooth (the first) of the wheel.
then with the other commands you calculate the evolved, you rotate it, you do it animation etc. etc.
If I've said some crap, I'll be corrected.
Hi.

n.b. I did not see the links posted by you

 

[numero1]

I correct myself, to draw the toothed wheel you have to give the tooth command.
as already explained in the first tea link posted to post n°9.
Hi.

 

[alphacentauri87]

Thank you for the answer!

but I have another question, I have to draw on autocad in 3d an existing piece in real
(a primary tree of a panda 750 fire change)

how do I detect with the gauge the information I need to generate the wheel?

 

[numero1]

1) you look for yourself on the network or on dedicated books, all you can find on the piece in question.
2) you look for a junkie, and you take the piece in question. And then at home you'll put it on.
so you also see how it is done by the real.

By method n° 2, of course, you will not be able to take all the data you need with the accuracy you want, so it would be better to have a dis. with all the data, however I think it will be difficult to find them.
but it's just as true that if you do such a piece (as a student) I hope your professor doesn't want such a precision, at least if you take the measurements with a normal caliber.
at least show him good will.
Hi.

 

[alphacentauri87]

1) you look for yourself on the network or on dedicated books, all you can find on the piece in question.
2) you look for a junkie, and you take the piece in question. And then at home you'll put it on.
so you also see how it is done by the real.

By method n° 2, of course, you will not be able to take all the data you need with the accuracy you want, so it would be better to have a dis. with all the data, however I think it will be difficult to find them.
but it's just as true that if you do such a piece (as a student) I hope your professor doesn't want such a precision, at least if you take the measurements with a normal caliber.
at least show him good will.
Hi.

the real piece is right in front of me xd
But if she was all straight teeth, she was a cabbage. . only that there are helical teeth that I do not know how to build them. .

I can take the measures.. but how do I use the .lsp I uploaded to autocad?

 

[numero1]

Sorry, I don't know that lisp.
But once you've launched what you do or don't ask you any questions with data to enter?

I add this:http://www.cad3d.it/forum1/forumdisplay.php?f=108is the link + related to your problem, i.e. the mechanical forum, student section.
you can probably find a lot of information in +, not on autocad but on the dentate wheels in there.
Hi.

 

[alphacentauri87]

Sorry, I don't know that lisp.
But once you've launched what you do or don't ask you any questions with data to enter?

I add this:http://www.cad3d.it/forum1/forumdisplay.php?f=108is the link + related to your problem, i.e. the mechanical forum, student section.
you can probably find a lot of information in +, not on autocad but on the dentate wheels in there.
Hi.

ho detto sopra...
mi dice questo il lips:


truegear lisp coftware copyright (c) 2002 eugeny kalney
use command invf to calculate values of involute function.
use command rotini to select objects for animation then rotgo or rotrev
to look at animation of created gear and generating rack meshing;
type first tooth to create gear tooth profile.


p.s. se sono in sezione sbagliata, chiedo al primo moderatore di spostare il topic nella sezione adatta grazie

 

[sampom]

I would say to prof. that in 3d with autocad eek if you draw them him!

:biggrin:

 

[alphacentauri87]

I would say to prof. that in 3d with autocad eek if you draw them him!

:biggrin:

I'm trying solid works, you say it's better?

or you have some plans to recommend. . I don't have to use autocad..

(only I know how to use it, let's say that I'm a pussy, it's autocad)

If I say so to the prof... I can really forget the whole year. xd worse than ss xd

 

[sampom]

I'm trying solid works, you say it's better?

No doubt!
any cad 3d "real" (parametric magari) would be better.
swx has the toolsbox (free) with already beautiful wheels and ready.. but also wanting to model them ex novo you put an inequality:

then if you really need them in acad save everything in dwg and you're fine.

 

[alphacentauri87]

No doubt!
any cad 3d "real" (parametric magari) would be better.
swx has the toolsbox (free) with already beautiful wheels and ready.. but also wanting to model them ex novo you put an inequality:

then if you really need them in acad save everything in dwg and you're fine.

is it possible to have a guide on how to achieve them? the problem that some data such as the toothed wheel module is impossible to measure it (without primitive diameter )

 

[sampom]

the problem that some data like the module Of the dense wheels it is impossible to measure (without primitive diameter )

What do you mean? Don't you have the wheel in your hand? the module is equal to the addendum (radial distance between primitive and external), therefore the revenues also from the external diameter:
m= øe / (z+2)apart from that a minimally trained eye recognizes the module "at sight" (as for the hexagon of the vines), but tables to the hand even only with approximate measures you get.

greetings
Marco:smile:

 

[alphacentauri87]

What do you mean? Don't you have the wheel in your hand? the module is equal to the addendum (radial distance between primitive and external), therefore the revenues also from the external diameter:
m= øe / (z+2)apart from that a minimally trained eye recognizes the module "at sight" (as for the hexagon of the vines), but tables to the hand even only with approximate measures you get.

greetings
Marco:smile:

va be the module is also equal to the diameter of the primitive divided the number of teeth... and addendum as you said.. is the difference between primitive and external truncating.

the problem and I don't know the primitive.. even if thinking about it well (I thought it came to the bath cup ahahah xd), could I also measure it with the right eye caliber?
at the end the primitive circumference is where the contact between the 2 wheels takes place.. about half the tooth.. Am I right?

 

[Fulvio Romano]

va be the module is also equal to the diameter of the primitive divided the number of teeth... and addendum as you said.. is the difference between primitive and external truncating.

already...the difference with the forum before is that the outer diameter can be measured, the primitive one you can guess. . .

 

[sampom]

...the problem and I don't know the primitive. .

But then you didn't read?
use the diameter exterior! (it is true that with odd teeth "it is not measurable precisely", but give.. about).