Spherical worm gear design animation - GIF

Spherical worm gear design animation.

<video controls autoplay loop> <source src="https://diqn32j8nouaz.cloudfront.net/spherical_worm_gear_animation.mp4" type="video/mp4"> Your browser does not support the video tag. </video>


Previously:

https://www.homemadetools.net/forum/...213#post161303
https://www.homemadetools.net/forum/...444#post131719
https://www.homemadetools.net/forum/...312#post165790
https://www.homemadetools.net/forum/...135#post161021
https://www.homemadetools.net/forum/...0929#post73411

One thing bothers me and I have seen the results of this. The issue is that on some designs such as this, the force is basically put on one tooth. I have seen broken teeth due to this design. Others have at least 2 to three teeth engaged. Thus if one tooth is contacted then I would think the length of the gear would have to be longer. Thin gears, specially plastic ones that are way to common, are usually what break or strip. Drives me bonkers. And disgusts me because now I have to toss a perfectly good device.

I agree. There are 'designers' who think just because it can be drawn, it'll work. That spherical gear form might be a manufacturing nightmare as well. Then at GIF close, they expect some kind of homage for 3 hours invested animating.
The glaring failure omits space or material for an axle, just to emphasize the diminishing lead and end of the worm. Pointless. The contributors name "CAD Knowledge" can be assaulted as well; spend 3 hours in Marks' Standard Handbook for Mechanical Engineers. First printed 1916, 11th edition 2006....unknown how long it took getting 1st edition written. How many programs have 11 edits just weeks after first release?

But an open mind also says, we'd be in a different position were it not for imaginative efforts. Even prototypes for safety pin or mousetrap took many tries; before tooling up in production.

Yup, understood. I was talking more about what I see in real life as opposed to that demonstration as I understand what it is for. Again, that type of setup is needed but man, one tooth with plastic just blows my mind.