Tutorial: How to Model Globoid (aka Throated) Worm Drive in Blender

[@CustomMaDe-eo2wx]

This is exactly what I was looking for. Instead of rebuilding it the complete way I just took the printable Stl version and made some changes with blender to fit my needs. Works and looks wonderful. Thank you 👍

[@lucasrodillo6739]

Thank you for this! Not only it was useful for modelling, but it was a good way to learn how rigid body physics work.

[@mihailazar2487]

YOU SIR ARE A GOD AMONST MEN There are a lot of people using "proper" CAD software such as SolidWorks to show you how to make gears and they don't even give a shit about the math, they just make them so they look nice but if the surfaces don't meet exactly ... THE GEARS DON'T WORK

[@Misterlegoboy]

alternatively, you can use a gear and the inner part of a torus, animate them rotating, and have the gear be a brush that pushes the torus edges inwards using dynamic paint

[@ericschleicher]

Life Achievement. In blender. I understood everything. subject aside, best blender tutorial ever. Thank you very much!

[@dakotapahel-short3192]

That method for making the worm wheel is exactly what i was looking for. I found a much easier method for making the worm shaft. Imma save this & create a proper diagram for other 3d modelers some day. worm gears too useful & actually easy to make if you can find directions.

[@Reavenk]

20:24 One tip is to select an edge in the direction you're filling faces and press the F key to create the quad. The end result will also select the edge that was created (to make the quad) - which means you can just keep pressing F until the entire thing is filled, all from selecting 2 verts.

[@BattleMachines]

in 14:37 you can use shift+R several times to repeat last step (copy+rotate), or you can use array modifier and copy and rotate object around empty - with auto merge. Anyway - thanks for you work and sharing

[@WagnerDeQueiroz]

This are an amazing technic to create a Globoid worm shaft! Congratulations for the Theory!

[@3dpprofessor]

14:27 Alt-R can be used to do repeated rotation around the object's center (or any center by modifying the property's settings. It takes a little finesse and practice but will save some time.

[@3dpprofessor]

19:32 Okay, now you're using the spin tool that I described above, but you're not using it with "Dupli" on, so give that a try some time to see how it will make your previous step easier. However, this time you're doing the math outside of Blender. Don't do that, man. Type "1024/8" and let Blender do the simple arithmetic for you.

[@3dgiftz]

Perfect tutorial bro I gonna use this for 3d printing for robotics

[@FairylandSound]

This amazing! Why dont you write scripts in Python for blender?

[@g6handi]

those tutorials are awesome, please do more of them if you have some spare time.

[@AlexRabeloFerreira]

Very good. Congratulations for the theory. Thanks you, I had need to learn the creation and process to animate gears for a clock model, and now I learned and can model. Thanks. Follow the quality of this video to futures videos.

[@ЧПУ]

Потрясающе мощно! Почему я раньше такого не видел?

Ha sido de una gran ayuda el aporte que ha hecho con este video.

[@aphiwatchawilai7205]

this is what Im looking for Please upload more

[@PegasusCZ]

Great! Thank you very much!

[@kefetDtcom]

I was trying to follow this tutorial on 2.8 but is not coming at all the way you are showing. is there any chance that you will redo this tutorial in blender 2.80. Thank you

[@suniljerath6473]

P

[@fabioshinichi]

Geez, was not what I was looking for but learned a lot. TYVM. Good job :)

[@sercanyasarr]

While maximum 1.75 teeth are in contact in the classical Cylindrical Worm Gear technology, the number of teeth in the clutch can be up to 11 in the double helical (globoid) gear set. I don't see exactly how much is going on here??

[@CinemaTablet]

Nice work! I managed to make one with (4t/40t). I scaled down the worm to 0.98, but I still had to move the wheel, hinge2 & axis2 + 0.5mm on X axis before the animation started to work properly. I have been struggling to do this in some other softwares before (some other techniques). I felt Blender light as feather.

[@artemgladkikh7781]

For people who don't want to copy stuff from webpage - you can use this script and generate mesh in Blender in realtime: pastebin.com/uWBAyeAD (Just open scripts panel, add new script, copy this text and run. Then you will have new Mesh generation option and you can modify parameters)

[@piotrlenarczyk5803]

Cool - looks like motorcycle wheel.

[@onlyeyeno]

Fantastic tutorial, Thaks. Just a suggestion, why not put the link to the "calculator" in Your description as well? Brgds.

[@Guustaaf]

Excellent!

[@juliesullivan1757]

Nice job.

[@AdrianStaicu82]

I think the gear teeth are wrong. Contact is only a line for each teeth and should be an entire plane I think. Small oversight if this is just for 3D printing.

[@karpenter.]

I want to design small diameter globoid (wheel diameter ~ 10 mm). In my case the worm moves with the fingers and the wheel axle almost does not provide resistance (on it there is a small mirror that needs to be precisely set in a certain angle). Is it necessary to change change some parameters in the globoid design to gain as much self-lock feature as possible?

[@Onyx2525]

Fantastic. I wonder if the calculator could generate full python script for blender to avoid the manual work between calculator and blender.

[@OTVinta3d]

Yes. Our latest hypoid calculator is designed this way.

[@yeinierferras2721]

Good work and very useful. ;)

[@3dgiftz]

Have u made gear motor?

[@anonymous-nc9bx]

Where do I find the "Involute Gear Outline.blend" file?

[@DavidGarcia-di4jn]

this tools empower people to build their dreams

[@OKFrax-ys2op]

Will it help my marriage?

Excelente.

[@mediafgh9005]

It's cool ! Why your calculator isn't use for the wheel also ?

[@stik.sirmium]

Great tutorial! Does Tooth Height Falloff always need to be 5 or should it be compared to another parameter?

[@OTVinta3d]

It does not have to be. You can choose another number experimentally. This parameter simply controls how fast the tooth falls off.

[@legoman91]

great tutorial, learned alot, just wondering though, is there anyway to speed up the gear/animation? mine seems really slow

[@ThiagoBorgesOl]

shackman91 You can increase the motor angular velocity in physics page.

[@stik.sirmium]

Do you intend to make a tutorial about cylindrical worm drive?

[@pinkalbhakta1955]

can we scale gear and worm little small so I can use it in some my other mechanical model like oil pump or something?

[@OTVinta3d]

Yes, you can scale both the worm and wheel up and down by an arbitrary scaling factor.

[@nosknut]

this is great, but i have one question. why the hell is this working. the radius decreases to the mittle, something that should cause the center to rotate slower than the edges. should this not cause complications?

[@OTVinta3d]

The worm's threads are designed in such a way that the angular speed of the threads relative to the wheel's center is constant.

[@nosknut]

O.T. Vinta is this achieved by angling the threads?

[@OTVinta3d]

Both angling and spacing.

[@nickg6312]

Why would you use blender for this. And not sollidworks or inventor?

[@ioanpirjolea6283]

Hi, I like your tutorial, and I made this in Blender 2.7.8.a, and at frame 250 it stops, can you please tell me why? I tried 1000, 750 and then 500, but the same result....

[@OTVinta3d]

Please contact us via the form at otvinta.com/contact.html or via email for further help.

[@tobiaskarl4939]

increase rigid body cache

[@santiagoyamin4769]

I need a 6 theeth globoid worm gear CAD drawn, can you quote?

[@OTVinta3d]

Please contact us via our web site for further help.

[@janos71]

the website does not seem to work (29.08.19)

[@MrXeberdee]

When I follow the tutorial to the point at 8:58 - the origin of my object does not follow the 3D cursor like it does in the video. If I move it maually by using the set origin/origin to 3D cursor action, then I can get the duplicate to rotate around the center at Xaxis 29 - but all other objects created also do not automatically move the origin, such as the tooth meshes. Art 13.49 when I go into edit mode, the origin is inside the object, and in object mode, it is at the 3D cursor. I had to mess around and set the origin manually for every duplicate. When I get to the end - the simulation fails. I noticed that the teeth of the wheel also merge with the worm still after a -1% scale. So question is whether there is some setting that automatically moves the pivot/origin to the 3D cursor - or some difference in how blender orientates origins i earlier versions - or if the tooth size is causing my simulation to fail? I'm using blender 2.79.

[@OTVinta3d]

Not sure I understand which object you are referring to. At 8:58, the 3D cursor is moved at (x=29), and no origins are involved.

[@MrXeberdee]

If I follow step for step - the worm when rotated 22.5 deg, rotates around it's own center and not the 3D cursor point at X:29. I have to manually set origin for the worm object to be the 3D cursor before I can duplicate and rotate the worm as per the video. The same thing happens when I try to duplicate and rotate the mesh for the tooth at 13:49. In edit mode I have a Manipulator object (see blender.stackexchange.com/questions/100479/origin-point-different-in-editmode-objectmode) - it looks like the object rotates around the manipulator object, even when I disable it.

[@OTVinta3d]

At the very beginning of the modeling section of the video, we set the pivot point to 3D cursor, see 3:04.

[@MrXeberdee]

I missed that step! BTW - thanks for this really great tutorial. and for your help :)

[@gearmetry6078]

You can't obtain the true gear wheel surface through this method.

[@euanclouston1841]

If it's not working check for normals.

[@peteshannon5194]

20:42 Ngon or triangle. How do you get rid of that, without cheating?

[@OTVinta3d]

We could not figure it out. We are open for suggestions.

[@pinkalbhakta1955]

why my animation stop after frame 9 ?

[@sandeep22800]

Which software did u use for this job??

[@anavi8r]

Blender

[@sandeep22800]

@@anavi8r thx

[@EkremCir]

Need Solidworks template.

[@souptonutsbolts9209]

could u put the link to the formulas in print

[@OTVinta3d]

www.otvinta.com/globoid.html

[@BTENERY]

Now let’s use machine tools to make it

[@OTVinta3d]

Contact us via our web site to discuss this.

[@nigelpallatt]

You always lose me with that stupid calculator, I cant go 1080 I'm on 480 max si I cant see what your doing.

[@olumsuzks3718]

what happen to your voice!

[@3dpprofessor]

It's a computer generated voice that's reading from a script.

[@MrSasha3050]

Solidworks will be better 😉