Enviarte el F3D ? Pon aquí tu dirección, en forma de adivinanza ;)

SÍ. Cual es tu email ?

​@@steelstoneHe puesto dos veces mi correo y desaparece al poco

Espero que esto funcione, por que ya lo he hecho 3 veces. Muchas gracias

Otro intento. El inicio del correo es ******* y le sigue el dominio más famoso de correos

@@elreyquerabio Correo enviado con el f3d (casi 20Mb).

Thanks !

Thanks !

please bro @steelstone, comeback. more people are in need of you. please make tutorial video about the spiral bevel gear.

The screw gear here kzbin.info/www/bejne/i6jJZXyomNajiqM proposes a complete modeling from scratch. It can be done with some patience.

The expression on the right side of 0 is the "automatic" profile shift coefficient formula. I left it there as a reminder, thus the 0 to "ignore it" for the calculation.

Rp1 * sin(alpha1_t) + ulH1 * "n" n is the number according to line number

Déjame tu dirección email y te lo envío. No pongas la @ ni los puntos, ya sabré colocarlos ;-)

Indeed. Search for "spring motion animate" and you'll find various examples of how it can be done with Fusion 360. It is not an actual spring compression, but spring portions animated with joins. A bit tricky and not really usefully, but funny ;)

As an example, there is a link to a google sheet In the description of the screw gear kzbin.info/www/bejne/i6jJZXyomNajiqM

I have the same issue as yours, increased interference as ratio diverges from 1. Actually I couldn't find any example on youtube or elsewhere of a hyperboloid gear with a ratio that is not 1. I would be happy to share my project, but since last February 2023 update, Fusion 360 crashes when opening any of my projects with a sketch containing an involute gear tooth [and it's very frustrating :( ].

@@steelstone Seems like youtube blocked my reply. Thanks for your answer. A former colleague of me developed two hyperboloid gears with transmission ratio bigger than one. (If you are interested, I can send you his publication, I can't use links in the comments). He proposed in one of his publications the formula for the axis angle: theta_axis=atan(w1)+atan(w2) or theta_achs=atan(w1)+atan(w2/i), where w1 and w2 is the twist angle of hyperboloid 1 and 2. However, with this formula I also get wrong results. If I make any progress I will let you know.

On my model there is the user parameter that I call "beta1" which is the angle between the axis of rotation and the helix. I assume you mean the plane of rotation as the plane perpendicular to the axis of rotation, so you want "90° - beta1".

There are 2 planes constructed : Construct Menu -> Plane at Angle : Z axis (blue, up), "beta1_w" angle. Construct Menu -> Plane at Angle : Z axis (blue, up), "beta1_w + 90 deg" angle. So, these 2 planes are vertical along Z axis. The first sketch is done on the first "beta1_w" plane constructed. (my Z axis is vertical, that's the default orientation in Fusion 360)

Or if you don't have enough time to do it, I would like you to give me the sources of information that you used.

@@smoke3090 I extrapolated the information the best I could from here www.sdp-si.com/resources/elements-of-metric-gear-technology/page4.php#Section8 and here www.tec-science.com/mechanical-power-transmission/involute-gear/calculation-of-involute-gears/ I plan to make a summary video with all the gears I modeled. Please be patient 🙏

Yes, I think so. Solidworks has the same abilities (and actually more) than Fusion to sketch, extrude, sweep, loft, split, combine, etc. I modeled a spur gear a year ago with Solidworks when I had access to it. The only thing that bothered me was the management of parameter units, they seemed inconsistent to me. I was unable to set a parameter with no unit (a count number for pattern features for example). Also, conversions to/from Degree from/to Radian had to be done manually, they are implicit with Fusion.

I suggest the parameters shared here kzbin.info/www/bejne/gXW7gKWLeamNpJo I think I already shared them for you some time ago 😉

This has been my first gear model with Fusion 360. I don't think I kept it as I made more advanced gear modeling later. See my other videos. In any case, every step is shown in this video in real time. It should be easy to follow.

Rp1 * sin(alpha1_t) + ulH1 and then for the next lines Rp1 * sin(alpha1_t) + ulH1 * 2 Rp1 * sin(alpha1_t) + ulH1 * 3 and so on until Rp1 * sin(alpha1_t) + ulH1 * 7 I realize now that values and expressions on editboxes are not always easy to see on the video, sorry about that.

You can also use ulL1 * 5 + ulH1 ulL1 * 5 + ulH1 * 2 ... etc

Those formulas are mathematics applied for Fusion 360 on circle involute definition. I didn't invent anything 😉 I suggest you to look at this video, it's a full screw gear modeling. I give a link to the parameter list in the description. kzbin.info/www/bejne/i6jJZXyomNajiqM A parametric screw gear can be considered as the generic for cylindrical gears, so a helical gear is a particular case of the screw gear (same helix angle for both cylinders), and a spur gear is a particular case of the helical gear (helix angle being 0).

Most of my knowledge about gears comes from these 2 websites : www.tec-science.com/mechanical-power-transmission/involute-gear/profile-shift/ www.sdp-si.com/resources/elements-of-metric-gear-technology/index.php#Section1 All concepts and formulas I used for Fusion 360 are deduced from there. "Xsh" is the Profile Shift Coefficient (a unitless value). It is usually labelled "X" on documentation. "Rsh" is the actual profile shift (in millimeters). It is labelled "V" on tec-science website. "dosh" is a parametric Boolean of my own that dictates or not a profile shift on a gear. Values shall be 1 or 0, depending on the gear teeth count (pinions are usually shifted because of their low teeth count). Then the Profile Tooth Shift formula you ask for is the expression for parameter "Ash", right ? Read stuff about Tooth Thickness on tec-science website. The expression for "Ash" is deduced from "e0" and "s0" expressions.

@@steelstone Thanks!

@@steelstone hey please could you type out the full formula for ash1(tooth thickness) that you used in the video. I calculated mine but i want to compare it to yours because it looks like you formatted yours a bit differently and i want to understand why

​@@chisomnnamani6200 I corrected and updated somewhat my design since I made the video. Now I use this formula for Ash1 : ( Xsh1 / Z1 * 2 * tan(alpha) - bl1 / Rb1 ) * rad On the video I think it was : ( Rsh1 * tan(alpha) - bl1 * cos(alpha) ) / Rp1 * 1 rad Maybe the backlash part of the expression was incorrect.

I'll think about it when I'll take some time to remodel it. My original file is quite unstable when changing parameter values. I don't know if it's Fusion 360 that is not mature enough, or if I'm asking too much of it ;-)

@@steelstone I would be happy with the unstable version :)

I suggest you to see one of my most recent videos (helical gear, or screw gear). I share the parameters in the description. The backlash parameter is called bl1, it is used for the calculated parameter Ash1 (for the pinion gear, and bl2 with Ash2 for the crown gear). Then look for it while sketching, here (d77 dimension): kzbin.info/www/bejne/i6jJZXyomNajiqM

External gears follow the same rules as internal gears. They can be parameterized the sale way. I didn't play yet with internal gears. I guess they are the negative of external gears. So with Fusion 360, if you already have an external gear, with 3 more steps you can obtain an internal gear (circle on sketch, extrusion, and substract combine). Maybe add clearance on tip circle, remove it from root circle (tip and root are somehow inverted), and set some negative backlash on the tooth profile.

@@steelstone just to show example of what I'm talking about is shown in beginning of this video: kzbin.info/www/bejne/o2SlYYeEoaZ5r80 There's the inner and outer helicoid, and I'm trying to model that parametrically so they mesh together and I could change parameters as needed (number of teeth, diameter, helix angle, etc..) I can model the pair somewhat using a plugin for helicoils, but I can't change the parameters once the component is made and have to go create new component from scratch again for a change.

@@yuriy77 OK, I see. I wouldn't call this "gear", it's more like a (helical or screw) rail. I think this should be easier to model than a gear as you don't need an involute tooth profile. You can start from one of my helical gears simplifying the tooth profile. I don't see any obstacle to get a parametric design as you wish.

@@steelstone I wish I knew all the equation relationships 😂 to make it parametric. Digesting your parameter list. There's a lot there lol