Tutorial: How to Model Geometrically Correct (Involute) Gears in Blender
HTML-код
- Опубликовано: 10 июл 2024
- Update (May 2, 2017): We now offer a much faster way to create meshing involute gears, based on a script-generating online calculator available at www.otvinta.com/instantgear.html. For more info, see our tutorial on instant gear generation at • Tutorial: How to Insta... .
Creating a pair of geometrically correct mating gears is not exactly a trivial task. The sides of gear teeth are not curved arbitrarily. Most real-life gears use a mathematical curve, called "involute curve" to keep the pressure vector between the teeth constant. This tutorial will teach you how to crate a pair of perfectly meshing gears using Blender in just a few minutes. It will also teach you how to animate the gears using drivers.
For more free tutorials and 3D models, and to make a donation, please visit www.otvinta.com.
This video deserves to be put in the smithsonian. Just fantastic. I'm as noob at blender as it gets and I was able to follow.
lol this wasn't meaning to be but this is the most concise explanation of gear theory I've seen
This had the math formulas I needed! Thanks! Now I don't have to piece together all this info from different sources to figure out exactly what I need!
Congratulations!
This was so incredible.
Very clever and helpful use of the computer voice. It makes the tutorial very clear and concise. Good job.
So far this is the best How to GEAR tutorials. cheers m8!
This is just legendary stuff, and i cant believe i understood everything and managed to successfully do it
This is one of the most complete walk throughs I have ever experienced! awesome!
not working with blender 2.91
the size in mm is huge i tried as per tutorial for 18 teeth, ended with 8 meters dia
Great video! Thank you. I am designing a mechanical clock in Blender and would like to 3d print it, so this has been a really great tutorial into the maths of gears and animating the designed model. All the very best,
Thanks for sharing the knowledge and for the website for quick and easy calculations.
Very nice tutorial! Thanks a lot!! keep doing more :)
I figured out how to combine the aspects of this with the throated worm drive using paths in Blender. (You convert this gear's face from mesh to path, and use it as a bevel to a bezier circle. Also involves twist and smoothing the twist.) The clue was the torus section info in your other video.
Neat stuff by the way. :)
Exactly the information I needed ! Thank you so much :-)
Very nicely done!
Thank you.Excellent Tutorial.
Thanks for the tutorial and online calculator great stuff! Just wanted to add as well the Array Modifier when editing the mesh could work for duplicating the gear pieces once you have one full piece I did a similar thing for a water wheel type model and it turned out well, going to give it a go along with your steps here to start.
Wow excellent job, very useful
You can do the process of duplicating and rotating parts of the gear very quickly using shift+r.
This is amazing!
Best tutorial ever!
I had no idea what I was getting into.... awesome.
It doesn't matter so much in this particular case, but after you finish creating the second gear and moving it to the first layer, I recommend setting the pivot point back to selected element. I was confused for a while before I figured that out.
very helpful tutorial thanks so much
Excellent! Thank you
This is so much useful to me thankyou
very gratefull for this video. thanks m8!
Thank you! Please make more video if you have free time
very good ,thank you!
That's super helpful
I'll probably try to make it mainly with modifiers and minimal mesh manipulation but I think it'll be possible ^^
Thank you, this is a great video. Do you have books or PDF were I can learn about theory of gear calculator.
top shelf information
Wonderful !
Thank you for the theory.
Amazing video. Although it is a bit tricky to use with the updated blender versions.
As a noob I am not always able to navigate to the correct tabs.
thank doctor O.T
Excelente trabajo. Lo incorporaremos en un seminario.
How would you do this for a worm gear / worm wheel combination?
Great video. The only question I have left after it is whether your company's name originate from the Russian "От винта!".
love the voice no joke
Oh man, this is such a great video. Do you have a similar video but about a rack and pinion gear? I need to design it in order that it can be printed in 3d and work in real life, just as the one you explained in this video. Thank you in advance.
We have yet to create a rack-and-pinion tutorial.
They do now
Thank you
hi thank you for the video. may i ask how to do you learn math functions to create objects in blender?
how did you bridge the two teeth with the semicircular arc
Amazing
do you have any updated video for the 2024 or Blender4.0
Thanks so very much! I have been looking for a tutorial exactly like this for awhile now. Only issue is that the driver user interface in more recent versions of Blender have changed enough to cause some mild confusion. Keep up the good work!
Yep this has confused and continues to confuse me. Any help would be appreciated
actually after lots of document deciphering and 45 minutes later I finally get it
45 mins? Yep--sounds about right. Glad you figured it out.
Many thanks for a very useful video.
Just a small query - should the formulas shown at about 2 minutes from the start not use the base radius rather than the base diameter?
Yes, base radius.
so the number of tooth the 2nd and the 1st is same just big or small ? did less tooth = more fast and hard or more tooth = more fast and easy?
Very Interesting tuto. Big problems with Remove Doubles for the 2 wheels. Tuto recommenced at least 15 times !!! Finally, after 2 full days I obtained two good gear wheels, but the animation does not work. At the top there is a mention "Auto-run disabled" but in User Preferences 'Auto Run Scripts Pyton' is checked.At 20:20 Rotation Z = 500 is O.K. but when I press i hovering the yellow box it does nothing.
An idea how I can fix the problem?
It would be easier for us to help you over email. Please email us at help at o t v i n t a dot com.
How does the calculater calculates U max
for rendering purposes u must also change appropriate face normals orientation - but very good video!
How did you:
- determine axis of rotation for tooth?
- is top of the involute also Tip diameter/radius?
- involute curve starts at Umin and ends at Umax?
- how do you determine which end of involute curve is on top and which one is on base of tooth?
- you bridged two teeth with semi circle, how far in to a gear must this circle go?
p.s. I get bigger involute curve that tooth needs to have.
- All rotations in this tutorial take place around the center of the wheel (which is also the origin. The involute goes from the base to the tip of the tooth, from UMin to UMax, and Umin is always 0.
- For the number of teeth 12 or fewer, there is a need for an "undercut", that is, making the bridge arc go deeper into the wheel to make room for the teeth of the other wheel. The alternative to undercutting is using a non-zero "profile shift", see our Planetary Gear tutorial for more information on profile shifts.
Thank you. Does same principle apply also for inner tooth (planetary gears,...)?
It does.
Can I set this up for more than 2 gears? It looked in a way that it only works with a 1 parent plus child. Can the driven gear be set up to drive another gear?
You setup the 3rd gear the same way as you setup the 2nd, via a driver relative to the 1st gear, but you need to adjust the gear ratio accordingly, without a "-" sign because the 3rd and 1st gears are rotating in the same direction, and the gear ratio value needs to be based on all three tooth numbers.
please, can you clarify , in the involute curve equations (to define the tooth profile) , what is the u parameter? grazie
It is simply the name of the parameter in a parametric equation. Traditionally the letter t used for a 2D curve, and (u, v) are used for a 3D surface. But in our case, v is not used.
Help, I really want to create the gears, and am trying this in version 2.8. Im getting an "error parsing expressions" when I paste the equations in, and can't get beyond that step.
First of all you should use the auto-generated python script that the other calculator creates, mentioned in the video description. I just did this today and it works, but you have to change a few lines in the script for 2.8. The lines under the comment "# Link object to scene and make active" are deprecated in 2.8 and only work for 2.7 or less.
# Link object to scene and make active
scn = bpy.context.scene
scn.objects.link(ob)
scn.objects.active = ob
ob.select = True
Change the 4 lines of code to this...
view_layer = bpy.context.view_layer
view_layer.active_layer_collection.collection.objects.link(ob)
view_layer.objects.active = ob
ob.select_set(state = True)
The script will create the profiles for both gears so you don't have to model that part. Watch the video in the description.
@@aliensoup2420 Great, thanks for the info! I will give that a try.
when i bridge the edge loops i just get a horrible mess of a mesh, no hole in the center or anything, suggestions?
I have the same problem! Have you solved it by any chance?
@@kesniel1714 Me too. In my case, I moved the cursor position to a little bit minus z side, and it worked well.
@@bubudge8855 Thanks! I'll try that out c:
Increase the size of the circle until it stops.
How do I put the equations in blender 2.8 ? I am not getting the transform window you opened in the left side of the screen.
In Editor Type under Graph Editor you will see Drivers has its own separate window
@@MrLzender thanks will check it
Why do people say that Blender can't be used as a cad program, then I find tutorials like this?
I don't know what cad program is like...
But Blender's physic is just still weird
Is Cad's physic like that?
Who is the author of these videos please?
Sir, I am Noob in a blender and this is 3 year old Video can you make the New Video for the new version?
Does anyone know the software that animated 2d drawings in this vedio?
Blender
@@OTVinta3d Got it, cool
In f360 the process is quite complex and slow
Explain and show that it is for everyone to understand.
How do you mirror?
S, X, -1 (to mirror alongside the X axis)
Wow
❤
You duplicated, and how did you do the opposite?
What keys do you use?
shift + D then S then CRTL M then -1 (Not edit mod)
This is no longer working with Blender 2.91 version
Try this one: ruclips.net/video/h37WgwkkTFg/видео.html
You could also just add a gear mesh and save yourself all the trouble
this is old you should make an annotation
my bevels screwed up
In Blender 2.8+ make sure in edit mode to select the entire gear, Mesh > Recalculate Outside/Recalculate Inside. I got caught out with the bevel issue, doing that fixes it.
Sciencephile AI, is that you?
great video, but could do with an actual human narrating, there are some parts where i cant understand what is being said...or maybe at least a text script of what is being said.
Please contact us via email, we will send you the entire transcript of the video.
OT VINTA! lul
nice tutorial. It would be better to have an actual human read the script. Is there a tutorial to do beveled gears?
There is.
@@OTVinta3d found it thank you! These are a great resource.
Blender comes with a gear maker
If there was two like buttons I would have pressed both
SANTIAGO
O_o
sounds like a robot generated-voice .......
My god that was painful... and to top it all a robot voice that grated on me after 10 seconds... I've suffered enough, can't watch any more... I learned nothing ... next video.