• This forum is the machine-generated translation of www.cad3d.it/forum1 - the Italian design community. Several terms are not translated correctly.

wheels dense

  • Thread starter Thread starter Supergiovane
  • Start date Start date

Supergiovane

Guest
I apologize to everyone because I know I'm dealing with a sad and retrite theme but I have a problem... indeed 2.

1 - I'm not a designer.
2- I have to create dense wheel profiles.

The problem is that those who commissioned my work alone give me tables with all diameters, pressure angle, no teeth... then I find myself depending on the drawings: correction factor. measure wildhaber, quota between rollers and other things that are not included in the cad.

If the numbers do not recommend me to buy a specific application, my question is how to create an evolving "manually"?

I apologize again for the topic already deepened several times but I have not yet found in the links present something that does to my case .... or maybe I don't understand.

grz to all . if then you know if there is a freeware program from a few euros possibly would be tombola.

Hi.
steak
 
I would say that you have 3 problems and the first is not to be presented in the appropriate section.

The dense wheels are usually patterned and however to design them there are special software. I don't know how much they can cost.
 
I presented myself in the section !!!!!! jurin giurello . if you want to place
 
I don't have to design and I can't.
they give me a table and according to that I have to create the profile, then my client chooses according to the numbers if to get made of shaped cutters and cut the piece to electroerosion wire.
 
but to do this as you draw the profile?? with what software?? Just set up simple trigonometric relationships to get the desired result.... I did it when I went to high school so you don't need university knowledge but only basic trigonometry knowledge that teach in all technical institutes
 
Supergiovane said:
I don't have to design and I can't.
they give me a table and according to that I have to create the profile, then my client chooses according to the numbers if to get made of shaped cutters and cut the piece to electroerosion wire.
Click to expand...
the type of processing will depend on what you want to get.
the profile, as you were told, is done with trigonometry.
If necessary you need rules (iso for example) to have the correct tooth profile.
who has machines generally knows all these things.
 
who has the machines... me or my client can also have the machines but, having always done other we are not experts of dense wheels. Maybe we can have other experiences.
I don't think I should be ashamed.
However, where can I find the legislation on the construction of evolvings?
 
I mean, no one ever said the word "fuck." I recommend! ! ! !

Then:
first give an eye to some doc on the net, just to understand how to do:http://dpgi.unina.it/giudice/corsi/appunti2006/cap19.pdfhttp://www.dimnp.unipi.it/guiggiani-m/invilupp.pdfhttp://nuke.ausilioteca.eu/linkclick.aspx?fileticket=7i8rzfalb4c=&tabid=83&mid=461http://corsiadistanza.polito.it/corsi/pdf/04asbp/ecm_appunti_sulle_ruote_dentate.pdfthis is the definition of evolvinghttp://it.wikipedia.org/wiki/evolvente_di_cerchiogenerally these profiles are generated by dedicated software.

As regards the rules, I would say that they are acquired in one centres (www.uni.com section buy). What rules? I don't know, I'm not an expert on gears.
I usually calculate them, but I use American standards.
Hi.
 
You can't understand one thing....if the wheels you have to build you just need a schematization and then you don't need to know how to build an evolving...if the wheels you have to draw them then I already asked you a question.. with what software?? even if you have to draw them to the cad you just need a simple schematization. . if you want to draw them to understand how they work then start to search on google some information on the base circle on a push angle of the inner diameter external and primitive... You're looking for what an evolving is.... I'm gonna take a paper sheet and make you a sketch. And from them you start setting the equations you need...no one said you have to be ashamed I think... But right now, I'll tell you there's gonna be a little study.
 
I have to draw then I think based on the size of the tooth, the length of the profile and the n.ro of pieces choose whether to make a removal or cutting thread.

What simpler do freeware programs exist on the market that mileage me from my casino?

I see that that that of the dense wheels and sports for those who are practical and I am not practical
 
try to look for wheel toothed parametric.. . .
Maybe some crazy soul pia put him free on the internet...
 
I think there's a lot of confusion.
Here everyone speaks of "machines," and I think they want to refer to the so-called "dentators". These machines produce a cinematic profile. in practice you set the parameters and the machine, as it is built, cut the various teeth.

Instead, supergiovane wants to make the teeth for electro-erosion, therefore has the need to "drawn" the tooth profile, before realizing it.

how to draw this profile? Good question, I'm not an expert.. .
an evolving is a rather simple mathematical curve, but calculating its parameters from the tooth parameters, may not be a trivial thing.

before starting production then should study, study and still study. I ask a provocative question: are you sure it's worth it? I was you, I'd give up the shop. study so much theory to produce three or four toothed wheels, with the risk of wronging and having to remake...boh?
 
already verified the dentatrice option ... nada .

the options were:

1 - or get one or more shaped cutters to then put the piece on the 4th axis
2 - or wire cut

just your note on the need to bang for two or three wheels. ... but there are clients who need to be pampered because or look for someone else that I don't want to see the numbers or keep you sulking.

I tell you if a programme cost a few hundred euros I would let myself be silent ... already this discussion in terms of time is costing time and money.
and above all I wanted to use the forum for more practical things not to know how to draw a gear.

If you are all very helpful, I would like to reiterate the concept that I am aware that there are companies in the world that only make deductions (companies with which I have no type of professional relationship ) but for a few pieces maybe particular they have to make expensive tools that today is not worth it. We were talking about lots and production would be all another sport that is absolutely not mine.
 
other than that depending on the material you can also find commercial dense wheels (see clearers ) simple to straight teeth. unless you have the tooth lowering, or helical wheels or other things drawings by schematizing them or as already suggested by others you have to take dedicated software.
 
If they're not industrial secrets, could you post your client's request? ?

you talked about diameters, pressure angle, n.ro teeth, correction factor. measure wildhaber............... .
 
Look.
If you want I can draw it on the fly with solid edge (I have the module) but I don't know how reliable it is.
I can then export it to dxf so that you can control it. it will cost you a bang but we say I put 5 minutes at max :)))))
However, since the parameters are many, I do not guarantee the final result also because the software starts from the assumption of the size of the wheel and, in my opinion, the pattern.
Try telling us what you need.

alternatively I also have the mitcalc program that calculates and draws them.
you can also download and use it in trial version (http://www.mitcalc.com/).
I know that it also exports to dxf the tooth profile but, I think, it is not easy to use (you must have excel).

alternatively there is geartrax (http://www.camnetics.com/).

cation
 
Supergiovane said:
I apologize to everyone because I know I'm dealing with a sad and retrite theme but I have a problem... indeed 2.

1 - I'm not a designer.
2- I have to create dense wheel profiles.

The problem is that those who commissioned my work alone give me tables with all diameters, pressure angle, no teeth... then I find myself depending on the drawings: correction factor. measure wildhaber, quota between rollers and other things that are not included in the cad.

If the numbers do not recommend me to buy a specific application, my question is how to create an evolving "manually"?

I apologize again for the topic already deepened several times but I have not yet found in the links present something that does to my case .... or maybe I don't understand.

grz to all . if then you know if there is a freeware program from a few euros possibly would be tombola.

Hi.
steak
Click to expand...
Hi, I don't know if you've already solved it. I made a trivial excel table to generate the points of a generic evolving (without correction factors then). the returned values are the coordinates in x-y (z=0) of the individual points for which the curve passes. If you have a cad that directly captures the points from the xls file, you will immediately have your curve. I do it with nx4, after turning the xls file into .dat. otherwise you should enter all coordinates of all points by hand and, considering that the more refined points is the curve, it would definitely be a uncomfortable. Let me know.
Hi.
piero
 
I used the law curves again with 18.

Entering the data as a module, number of teeth, pressure angle and other the result obtained is what you see in the image.

the evolved obtained is 'exact'. I made a comparison with the profiles generated by the appropriate software and I noticed that the output is usually given by approximations made of bows and lines, not tractable for an electroerosion for example.

p.s. the evolving is not a funzioncina nor at least is studied with 'simple trigonometric knowledge'.

Greetings:
 

Attachments

  • ingra.webp
    ingra.webp
    67.5 KB · Views: 43
Hi.
You really don't need a freeware.
You can create a very good excel file in which, by putting the diameter of the base circumference and the pressure angle, you draw the evolved.
What I have not understood is what you have to do with this evolved, because you do not need everything: at some point the logs with the circumference of external truncature.

Now: if you need data (for example: length of a rope, step or other) you already find everything tabulated.
If you're looking for something else, then I don't think I should be mysterious.
 

Forum statistics

Threads
44,997
Messages
339,767
Members
4
Latest member
ibt

Members online

No members online now.
Total: 18 (members: 0, guests: 18)
Back
Top