Ignation

[Leakim]

Hi, I'll put my problem... I have a small project, in this project I would need to print
in 3d three wheels, 2 of the same diameter d, and a wheel of 1/2d... so that by connecting the two wheels of diameter d with an axis,
equally... one of the two wheels with diameter d must be dented so as to turn in reverse the smaller wheel (also dentate) making them do 2 turns for each spin of the larger wheels...

questions: Can a precise gear come with a cheap 3d printer? What diameters do you recommend me to have a gear that turns well?

3d design tips??? exist downloadable files that can be used for a 3d print of toothed wheels one double of the other? ? ?
As you may have imagined, I'm not a designer, and I'm at first sight... I ask patience and a manina:d thanks in advance!

 

[doking]

I don't think it's a 3d modeling and rendering problem....................

 

[Leakim]

I don't think it's a 3d modeling and rendering problem....................

I humbly ask if I was wrong, having to make a gear and having to print it in 3d I thought it was the right place
still citrus fruit

 

[numero1]

maybe this is a + suitable section:http://www.cad3d.it/forum1/forumdisplay.php?59-prototipazione-rapida

 

[marcof]

I ask humbly sgrubio If I was wrong. . .
Still sgrubio

where does this new (for me) synonymous with "discussed" come from?

 

[IPdesign]

As for your question about "precision" I can tell you that everything depends on what the gears have to do, but above all on their size.
Usually reprap printers use for the extruder block of the teeth that are made of abs with 3d printing.

 

[alen23]

I would ask a question, if a toothed helical wheel has a relationship greater than its relation of transverse conduct, then its contact and dots rather than linear, even if the axes of the wheels are parallel, since the contact line due to the extreme axial length of the wheel does not include all the profile of the evolving circle? if someone please can answer the question.. Thank you.

 

[MassiVonWeizen]

We ask questions in random discussions... .

I would ask a question [...] if someone please can answer the question.. Thank you.

in any case poor Italian, understood as idiom.

 

[PIETRO2002]

I would ask a question, if a toothed helical wheel has a relationship greater than its relation of transverse conduct, then its contact and dots rather than linear, even if the axes of the wheels are parallel, since the contact line due to the extreme axial length of the wheel does not include all the profile of the evolving circle? if someone please can answer the question.. Thank you.

Sorry I couldn't understand the question well, it's a little complex topic of yours, if someone knows how to give a response would be interesting!

 

[meccanicamg]

First you have to do one because telling a technical something creates confusion and loses interest after two lines. even by hand... but make a pattern.

subject already dealt with.

freecad with fcgear module makes gears and you look for it to stay in 3d.
you need to know how to design gears.... at least basic formulas.
It's not a random job.
Are there couples and powers to transmit or is it just a giant key door?

khk gear has computer and profile dxf. there is the online guide to learn how to make gears knowing little or almost nothing.

precision depends on the printer and processing tolerances.

If you choose a sufficient game you can compensate for the 3d printer error.