Gear Parameters and Design Tradeoffs (Gears pt 2/7)

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Timestamps for various topics:
0:00 Minimum requirements for meshing to work at all
7:20 Gear ratio selection restriction
9:07 Binding due to insufficient backlash
12:29 Screw pump working
13:12 Pressure angle tradeoffs
13:45 Effect of shaft-shaft distance on backlash for different pressure angles
14:48 Effect of pressure angle on tooth strength
16:43 Force driving the shafts apart, and effect of backlash on this force
18:37 Failure of WiFi tank drivetrain due to this force
20:12 Conclusions on pressure angle
21:02 Standard values for pressure angle
21:51 Tradeoffs between module and number of teeth
22:58 Larger module is more tolerant for shaft-shaft distance errors
24:26 Undercutting, why it’s necesary, and why it’s bad
26:35 Concentricity error or runout error gives same type of problem as shaft-shaft distance error
28:47 Why m=3 for the screw pump?
31:51 Outer diameter of a gear
Part 3: • How to model Helical a...
Full playlist: • All about gears
I don’t think any of the files in this video are interesting enough to share. If you would like to see one of the files, leave a comment below.
I have made extensive use of these two references, which treat a bunch more topics that I didn’t discuss here, such as contact ratio, profile shifting, and wear resistance:
khkgears.net/new/gear_knowled...
qtcgears.com/tools/catalogs/P...
If you have any questions, comments or suggestions please leave those down below.

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30 июл 2024

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Комментарии : 178

@antalz 4 года назад

I found this video quite hard to make. It's quite mathematical and technical, but I tried to move to a practical example as quickly as possible. I also deliberately went through the math rather slowly, hoping to make it as easy as possible for everyone to follow along. If you're familiar with basic algebra it may come off as rather tedious. If you can think of a better way to aproach this subject please let me know. Note that some topics are left out of this video, like profile shifting which can mitigate undercutting in low tooth count gears, among many other subjects.

@soepvorkje 4 года назад

Keep it as it is, for me it was very clear and detailed. I am not really familiar with algebra, so the speed at which you went through the topics is spot on. Very informative. I also like the skipping back and forth between Fusion360 and the actual gears. Very nicely done.

@antalz 4 года назад

@@soepvorkje Thanks mate! I published part 3 a little while ago, I hope you'll like that too. I think you're right I should keep a low pace during the algebra. It might be tedious for some, but I fear a lot of people will have difficulty understanding if I start rewriting formulas on the go, or I start leaving things as an exercise to the viewer. I also think I'll make racks and ring gears seaparate videos, so they show up in search better. The two topics aren't very related to each other so it seems weird to put them in a video together.

@racoonartworks 4 года назад

The part right at beginning was a bit hard to follow. Not because it's too hard mathematically but because you probably don't really know yet what module, diametral pitch and so on actually means. A little diagram on the right might have helped for us more "visual" folks - or just briefly explain what each of the terms means before going through the formulas. Apart from that, it's an absolutely awesome tutorial series and I'm blown away how well you managed to explain this topic!

@antalz 4 года назад

@@racoonartworks That's a good point, I think I could've at least illustrated what module and diametral pitch do. I was kinda banking on the viewer at least recognizing the words, after seeing them in the gear generator in part 1. Still, it's really weird to have terms thrown at you that are only explained much later, it feels like maybe you're missing something. I'll keep that in mind for the future, thanks a lot!

@steelstone 3 года назад

Very nice overview about gears ! Yes, profile shifting is a very important topic. And then comes the operating pressure angle. Quite difficult to popularize. Considering spur gears, the absolute minimum teeth count might be 7. With helical gear you can go lower, down to only 1 tooth like for a worm gear.

@AntaresSQ01 2 года назад

This is literally the godsend in gear design I've been looking for. I like how you answer any questions someone might have, I was constantly going "okay but what if the module is bigger, or smaller, what about minimum teeth, etc" and you kept answering and explaining everything in detail. Brilliant stuff! I also like how gears are such an exact and simple science, no need to mess about with complicated maths, there are standardised pressure angles and few hard and simple rules to follow, makes it super easy to design a gear for any application. One thing i'd be interested in is a way to calculate the minimum module you can use given you can measure runout or shaft dimensional accuracy so that you'll never get teeth skipping unless total failure happens. Say you have the situation you mentioned last video about the housing of the tank not being rigid enough. (Obviously you can't have perfectly rigid housing or shafts but you can predict their deformation given the forces.)

@antalz 2 года назад

Yeah a lot of other videos only vaguely explain what's going on. Most of them won't even explain what the pitch diameter is, so you have no idea how far the gears need to be apart. Quite strange, but that makes this video very useful to many people even if it is a bit mathematical. I'm not sure how I would answer the minimum module question. Usually you want the module to be large so that the teeth are large and can take high forces. Very small teeth are usually only needed in fine positioning machinery like microscopes, where strength and shaft deflection aren't really things to think about. Mostly the minimum module in those cases is determined by how accurately you can cut tiny teeth.

@stefanguiton 4 года назад

Amazing video, very in depth. I appreciate the amount of detail you went into on each aspect.

@krzyzan3552 3 года назад

So far this series is amazing, super informational and easy to understand, thanks for making these videos!

@antalz 3 года назад

You're most welcome, thanks for watching!

@sky173 Год назад

This is the most comprehensive series of videos I think I've ever seen on RU-vid. Thanks for sharing. I hope to see more content.

@schamannpedro 2 года назад

I find this video extremely useful. It's technical, but you explain the concepts in an easy way to understand it. Good job!

@TeotoniodeCarvalho 3 года назад

Great material! I have been looking precisely for that for quite a long time. Thanks very much!

@dubtechbrotherstv5744 3 года назад

You are currently one of my favorite youtuber! I Like the way of your explanation and that you arent afraid to mention the complicated stuff. A lot of chanel skip the difficult subjects for a larger target group but for an educational purpose and Not only for enternaining you have to go that deep 👍

@antalz 3 года назад

Thanks a lot mate! That's actually a big reason I started making gear videos, a lot of tutorials skip subjects that are essential, and some of them even get stuff completely wrong. I'm glad you found it useful.

@rodin4429 2 года назад

So glad I bumped into this. You've done a great job here of illustrating all the parameters, in some depth. You have helped give me a better appreciation of the pressure angle and the reason for the narrow (common) choices. Your intro of giving the minimum requirements was a really good start too! Set up well for all that followed.

@antalz 2 года назад

Thanks a lot, and good luck on your projects!

@NullHyp 4 года назад

I can’t wait for your video on Herringbone gears! Keep up the great work.

@antalz 4 года назад

Thanks! I'm still busy with the ventilator project, but I am looking to get back into videomaking sometime soon.

@Coolarj10 3 года назад

This was by far the most comprehensive gear explanation video I have ever seen… I have been waiting and wanting for a video that explains everything the way you did… Absolutely love the way you described it in a combination of fusion 360, a whiteboard, and an actual physical example. Thank you so much for going into so much detail and explaining many pitfalls when designing gears.THANK YOU!!!

@antalz 3 года назад

My pleasure, thanks for watching and commenting

@graysonkeaton 4 года назад

Looking forward to Part 3 and 4 of these videos. Great job breaking down the design and math for creating gears, I am excited to start printing now.

@antalz 4 года назад

Thanks, best of luck on the printing, if you run into any issues do let me know! Parts 3 and 4 are definitely delayed due to the coronavirus thing, but they will be coming out one day.

@grandpa9595 4 года назад

@@antalz Thank you for all of your hard work on these!! They are very informative and easy to follow. Looking forward to the next in the series!

@powersprouter Год назад

THANK YOU! I have watched so many gear videos without understanding why my gears were sucking. At last I saw this one!! Hallelujah. You are a godsend.

@peterfrisch24 2 года назад

This is the first time for me to delve into gears at all. And this series is really very usefull and easy to follow in a quite complex topic. So thank you so much for putting in the effort to create this series of videos!

@antalz 2 года назад

Thanks for that mate, and good luck with your projects

@SKotekar 3 года назад

I can't thank you enough for making this video. I was going nuts figuring out the number of teeth and distances without the mathematical background on these. Really appreciate it.

@antalz 3 года назад

Thanks mate, good to hear the content is helping people!

@ruudsmits907 Год назад

Wow, so far I have only looked at this subjuct from a theoretical point of view, but it warms my technical hart!! Thank you for this very interesting set of films!!

@andrewgorman8898 2 года назад

Very good job. Thank you for your clear concise and thorough explanations.

@alfonsinho74 Год назад

Thank you, you are quite the engineer and scientist for that matter. I stumbled across your channel and it's great. Thank you very much indeed.

@Invisiblejihadi 4 года назад

Thanks for sharing your knowledge! These videos have been a fantastic resource for learning how to design gears properly and I can't believe they have so few views

@Invisiblejihadi 4 года назад

Has part 3 been put on hold?

@antalz 4 года назад

@@Invisiblejihadi Yeah it has been I'm afraid because I'm working on some stuff related to the coronavirus situation. I'm looking to get back on track though, especially because quite a few people are looking forward to the remaining parts. Thanks for your kind comments!

@gerry1337 4 года назад

Gear theory is really complicated, at least for me. Videos 1 & 2 has to be just about the best explanation I have ever heard. Thank you so much for sharing, exceptionally good. Stay safe, see you for the Helical stuff.

@antalz 4 года назад

Thanks for your kind words, I hope to see you too for installment 3. If I had to put a timeframe on it, 3 weeks from now.

@alexanderfpv6655 2 года назад

I just found your channel and your explanations are fantastic.

@pwfk 4 года назад

Fantastic informative video, your way of explaining makes it very easy to understand, can't for parts 3&4 !

@antalz 4 года назад

Thanks, that ventilator thing I'm working on is coming together, shouldn't be too much longer!

@robtroman7917 2 года назад

I served an apprenticeship at a gear cutting company. You have taught me more about gears in 7 you tube videos than I learned in 5 years. Thank you.

@antalz 2 года назад

Thanks for that mate, I must say khk gears and a few other companies put out really great material, though it's very technical so it takes a while to figure out.

@roverdief1857 11 месяцев назад

hello Mr.Antalz,mya name is ronald,am watching all yaour videos/tutorials about gears,cos to my opinion,you are about the best in making and also explaining why and how gears works,thank you

@noweare1 6 месяцев назад

Top notch content on gears, especially for 3D printing. Just what I was looking for. Another advantage of using large modulus is so the printer can print the teeth. With small teeth the printer resolution may not be good enough. The math was well presented, practical and easy to understand.

@wacharapong11 4 года назад

Such a great video!! please continue the episode.

@antalz 4 года назад

Thanks! Part two is already on the channel, and I'm pretty close to releasing part 3 on helical gears. The coronavirus thing delayed that a lot but it's coming.

@jswatts92 4 года назад

Great video! Been looking for something this thorough and approachable. For future videos, it may be helpful to raise the volume of your microphone on the bits when you are using your computer headset.

@antalz 4 года назад

Thanks! I'll keep the volume levels in mind, my editing skills still need some work

@keithforbes4544 3 года назад

exactly what I needed!! can't wait to incorporate gears in my projects now :D

@antalz 3 года назад

Great to hear, let me know if you run into any issues.

@AlejandroVales 2 года назад

Amazing resource, great video!! :)

@adamnieznane749 Год назад

Great video. Thanks for sharing your knowledge

@mazegamezz8985 3 года назад

Great video! I found it quiet confusing to create a fitting gear. But you explained it so good and with such a detail on both the mathematical and the practical side.

@antalz 3 года назад

Thanks a lot, thanks for watching!

@vchernesky 4 года назад

Looking forward to your next video! The FIRST FTC team I coach is using herringbone gears in their design, and we are going back and forth between Fusion 360 and OpenSCAD (using Jörg Janssen's gears library) for design. We'd love to learn how to build herringbone gears in Fusion!

@antalz 4 года назад

If you want to get going quickly, there's a helical gear add-in you can download. You can then take a helical gear, and use the mirror command. Mirror the helical gear across its top face. Then modify->combine to turn it into a single herringbone gear. You can also make a helical gear without add-ins by. This is more complicated but goes something like this: 1) make a spur gear 2) make a sketch on the XY plane. Sketch a line from the top face of the spur gear going straight up 3) with create->sweep, sweep the top face of the gear along the sketched line. In the dialog enter a twist angle. If you want to go for the latter, there's also a tiny bit of math for what twist angle you need to get the right helix angle. If you're interested in that I can write that up real quick too. Thanks for your comment, and best of luck in the competition!

@vchernesky 4 года назад

@@antalz Thank you for the suggestions! We're good for this season (going to States Championship next month) but my CAD lead (and I) would like to learn more about how to do it all in Fusion. I've shared the video with the team, we'll use it as a discussion point as part of an upcoming team meeting.

@ToonMeynen 4 года назад

Heel goed uitgelegd. Ik heb ook veel opgestoken van je fusion technieken. Heel leerzaam allemaal. keep that geek stuff coming. Bedankt

@antalz 4 года назад

Graag gedaan, bedankt voor je comment!

@julienmciver6454 2 года назад

This is such a good video, well done

@antalz 2 года назад

Thanks so much, let me know if there's anything still unclear

@MrZomhad 3 года назад

Great job, I really enjoyed it! Cheers from Germany!

@antalz 3 года назад

Thanks a lot, Gruessen aus den Niederlande (No German keyboard obviously)

@hoogveld111 3 года назад

Absolutely terrific explanation, congratulations on a job well done!

@antalz 3 года назад

Thanks, I hope to publish more videos soon

@hoogveld111 3 года назад

@@antalz Looking forward to it. If you're looking for suggestions, it's been impossible to find good references to model beveled gears, let alone helical versions. I'm trying to recreate a full functional model of a helicopter gearbox and this is a part that I haven't been able to resolve yet..

@antalz 3 года назад

@@hoogveld111 I'm planning a video on bevel gears, after finishing my current video on powering raspberry Pi from LiPo batteries. I think for that video I'll stick to straight bevel gears, but I also have a technique in mind that can do spiral/zerrol bevel gears, but not hypoid gears. I think that'll be a separate video later, but not sure yet. I have to test my technique in Fusion360 still, I want to ensure I get it right. Part of why I started this series is because many people show gear modelling techniques that are just wrong.

@Wernerrrrr 4 года назад

Thank you very much for making this!

@antalz 4 года назад

Thanks for your comment. I hope to see you again for part 3, if all goes well 2 weeks from now!

@cQ2 2 года назад

Amazin explanation! not an easy thing do good gears. Thanks man!

@havehalkow 3 года назад

This is gold, thank you)

@antalz 3 года назад

Thank you, thanks for watching

@THE320CREW 2 года назад

you do great job mate!

@fredflintstone8048 2 года назад

Excellent presentation. Thanks for sharing.

@antalz 2 года назад

Thank you for watching

@Maffi96 4 года назад

Very helpful and informational!

@antalz 4 года назад

Thanks, I still have parts 3 and 4 planned, and I'm thinking of also doing helical and bevel gears. It will be a while before those come out though.

@0redthunder0 3 года назад

Great explanation of undercut! Thanks :)

@antalz 3 года назад

Thanks! I do fear I got something a bit wrong here. I did correctly show the interference, but Fusion360's gear generator doesn't actually correctly generate undercuts.

@dannyperry8070 3 года назад

Great video. Thank you.

@frittenpeter Год назад

top notch content

@more_yasnotsi 3 года назад

Excellent video, thanks a lot!

@antalz 3 года назад

Thank you mate

@howearnchong856 2 года назад

Thanks, great info.

@hansdegroot652 9 месяцев назад

i dont claim to understand but this video was certainly very clarifying for me thx I just have to watch a few times I think.

@lucaskulakowski9366 4 года назад

Wow! Awesome video.

@antalz 4 года назад

Thanks so much! The next installments are coming, but hearing people find use in these videos motivates me that much more to get them done.

@braspatta 3 года назад

amazing video! very useful..

@antalz 3 года назад

Thanks mate, thanks for watching!

2 года назад

Thanks. I learned a lot!

@antalz 2 года назад

Great to hear, thanks!

@akosrupp232 2 года назад

great vid

@ghosttoo7467 2 года назад

So far the first part of your explanation for most of people that are watching or listening they are so confuse cause they DO NOT understand what is module or diametral pitch and so on I do understand what you are talking about , so if you want to teach about gears should you start with the basic

@antalz 2 года назад

But people don't yet need to know what those numbers mean. They're numbers you can put into a gear generator, and I explain what numbers you need to put in to make something that works. What the numbers mean is not important yet at that point. I first want to show people how to make something that works, before I talk about tradeoffs or other more advanced topics. For some folks it's fine to do theory first, then practice, but many people just get confused by the theory and click away, so I purposefully choose to do practice first, before stepping into theory.

@danielhunsche2010 3 года назад

Hi great video. For calculating the outer diameter is there a reason why you use the numerical value of 2 in m(z+2) , instead of m(z+1) or 1.5 and so on? Thank you!

@antalz 3 года назад

Yes and no. For a standard gear, the tooth sticks out 1*m out from the pitch circle, the addendum is 1*m. Because it's a diameter you have to add 2*1*m, so that's why it's 2 in the formula. However, choosing 1*m for the addendum is only convention, and can be chosen differently.

@PasanJayaweeraYashoda 3 года назад

thank you soo much!!!!!

@antalz 3 года назад

My pleasure, thanks for watching!

@Brewer_ 4 года назад

Very informative. I could use a part 3 on how to design a rack to mesh with a gear.

@antalz 4 года назад

Thanks! Part 3 will be about helical gears, and I don't dare predict when it will come out because I've been too optimistic about it a few times before now. For making a rack, you can basically recreate the first drawing on this page: khkgears.net/new/gear_knowledge/gear_technical_reference/involute_gear_profile.html Sketch 1 rack tooth, extrude it, then make a linear pattern of bodies, and then finally add the "backbone" of the rack that connects all the teeth into one solid.

@Brewer_ 4 года назад

@@antalz I'll definitely give that a try tomorrow. Thanks :)

@andyvisser7681 6 месяцев назад

You're good!

@francescoejlli8985 3 года назад

amazing, lots of useful information, i have a question: What about the "root fillet radius"?

@antalz 3 года назад

That's actually an odd one. As I said in the video, the addendum is smaller than the dedendum, so there is a little bit of space near the root of the tooth where the mating tooth is never supposed to touch. Because of that a small fillet can be added there, with the radius you specify. This creates a bit more resistance to bending stress, making the tooth just a bit stronger for high-torque applications. In theory there is no downside, in practice if the shaft-shaft distance is closer than intended, the tooth of one gear may interfere with the root fillet of the other. I don't really know what the criterion for that is mathematically speaking though.

@francescoejlli8985 3 года назад

@@antalz Thank's great job👍

@janskihumanski6894 2 года назад

This series is great. But how exactly do you choose the root fillet radius? Are there any tricks for this? Edit: I just watched the video on helical gears and I think i understood what this does.

@antalz 2 года назад

It gives some strength to the tooth roots, but I don't know when they become too large. The gear generator will stop you if you make them too large, but with manufacturing inaccuracies you may run into problems before that. Again, I'm not sure when that might happen.

@mechtasia6643 3 месяца назад

How Can I like this video 10 times?

@osmanpasha_diy 2 года назад

Great video, but I've come from pt 1 video that mentions module and pitch diameter and promises that it will be explained in the next video. However this one expects people to already know what a module is. Could you explain what this is? What physical value does it represent and how are the initial formulas derived?

@antalz 2 года назад

Perhaps that was dishonest advertising. The point of this video isn't really to tell you what exactly the numbers mean, just what the numbers do, and allow you to select numbers to create a working gearset. In that context, the module is just a number that represents how large the teeth are. The pressure angle is a number that affects the shape of the teeth, a higher number makes them more like triangles. If you really want to know what the module or pressure angle truly mean, then you have to get into a lot of math and geometry that I felt most people wouldn't care for. You can find an explanation here: www.tec-science.com/mechanical-power-transmission/involute-gear/geometry-of-involute-gears/

@osmanpasha_diy 2 года назад

@@antalz thank you, I'll try!

@jonfigz5205 4 года назад

One thing I did not quite understand. I figured the blue line on the gear projects the pitch diameter of said gear. As I understand it, this measurement should not be affected by backlash, so, in the drawing with the backlashed gears, shouldn't both gears' blue lines be touching? Because it seems like, even with backlash, you kept a center distance +0.2mm apart between gears.(?) Thank you

@antalz 4 года назад

Yeah it does look like I messed that up. Those 2 circles should be touching and I'm not sure why they aren't. I must have moved one of the gears with backlash without realising it? Thanks for pointing that out, you have a sharp eye!

@jonfigz5205 4 года назад

@@antalz thank you for the quick clarification. Cheers

@Thebannedone1 4 года назад

Brilliant videos, I watched them with high interest. Unfortunately even after watching them I still don't know how to remake 3 gears I need. They are really small. Outside diameters are 22mm, 19mm and 7mm with N respectively 44, 38 and 12. I am trying to calculate the module, but I do not know how to calculate the Pitch diameter. I know that PD=N/P(Diameter Pitch), but what is Diameter pitch? Is it the full (outside) diameter of the gear I measure with the calliper?

@antalz 4 года назад

Diametral Pitch is a quantity that belongs to the inch standard system of gears. For metric gears the pitch diameter is the module times the number of teeth, so PD = m*Z. If your gears are metric, I think you have module 0.5 gears. The Pitch diameter in that case for the first gear is 0.5*44 = 22mm, and its outside diameter is 0.5*(44+2) = 23mm, so I'm kinda assuming/hoping you mismeasured the outer diameter for the larger 2 gears. Are you sure the gears are metric to begin with?

@Thebannedone1 4 года назад

@@antalz You are right, I double checked that and I kind of figured it out myself (wasn't sure that I knew it, but I knew there are 2 formulas). What I did was I filled in everything I knew and then rough measured the Pitch diameter with my calliper and got 22mm. Then I saw that with default module of 5 it gives me 220mm, therefore changed it to 0.5 and it returned Pitch diameter of 22mm in Fusion 360. When I create the other two gears, the module should still be 0.5, right? Thank you!!!

@antalz 4 года назад

@@Thebannedone1 If the gears mesh with each other yes, the module must be the same for all of them. Only the numbers of teeth change. Also, for metric gears you shouldn't try to measure the pitch diameter directly. Instead measure the outer diameter and use: OD = M*(Z+2). It's much easier to measure outer diameter accurately. You can then work out the module, and then using PD = m*Z you get the pitch diameter. I talk about the OD a little bit at the final section of this video at 31:51, but I should have mentioned there that it's also useful for reverse engineering existing gears.

@Thebannedone1 4 года назад

@@antalz Splendid! Thank you very much for the information!

@soumyobiswas9438 Год назад

What is the backlash formula been used.Addendum dia (d-2a)and dedendum dia (d-2d) formula I had used but still the tooth is entering the base circle (rd cos theta).Any solutions would be helpful.

@antalz Год назад

I believe the problem is your combination of tooth count and pressure angle doesn't work, you need more teeth or higher pressure angle. You can also use undercutting or profile shifting, but I don't know how to model either of those.

@dvi3660 Год назад

video has everything that i want to know

@xaviertwilight7855 3 года назад

You could change the color of the models in fusion so that they are easier for your viewers to tell apart

@antalz 3 года назад

Hehe, yeah I start doing that at 26:35 for the runout errors, and I do it in later videos too, especially for the thumbnails. Shame I didn't do it here, but on the bright side I think I'm getting better at this RU-vid stuff.

@danielsaenz5570 Год назад

Hello! Could you explain what the pitch diameter is? Like, is the diameter of the gear without the teeth? Or is it just an arbitrary point on the gear.

@antalz Год назад

The pitch circle and its diameter, are a bit abstract. It's essentialy a virtual circle that describes how big the gear is. For two gears to be in proper contact, their pitch circles much be tangent to each other. The teeth are constructed around the pitch circle. How far they stick outward is called the addendum. There are also cutouts in one gear so the teeth of the other gear have somewhere they can go. The depth of that cutout is called the dedendum. For standard gears the addendum is equal to the module, and the dedendum equal to 1.25*module. I think for better understanding you should create a number of gears in CAD. First create a bunch of gears with module 2, and tooth count 15, 20, 30, 50 or something like that. Then create some gears with tooth count 20, but with module 1, 1.25, 2, for example. Fusion360's generator shows a faint green circle that represents the pitch circle. I think by doing that, and possibly trying to joint up some of those gears and playing with them, you can get a better feeling for what the pitch circle is.

@danielsaenz5570 Год назад

@@antalz Thanks a lot!

@smerfu8734 3 года назад

Legend 💀

@antalz 3 года назад

Thanks!

@bepbep44 7 месяцев назад

12:28 you say we need backlash for the better meshing. And also you moved the gear1 to 0.4mm down to touch the other gear so that it can transmit the tork. So our new Distance between two gears value is 53.6 right ?

@antalz 7 месяцев назад

The gear is rotated by 0.4 degrees, only to demonstrate what backlash does. The desired distance does stay at 54 millimeters. Backlash is introduced to ensure that the gears will run well despite manufacturing imperfections.

@bepbep44 7 месяцев назад

@@antalz I see. Did you use backlash for your pump's gears ?.

@antalz 7 месяцев назад

@@bepbep44 Yes, I believe 0.1 or 0.2 mm. Best thing is to try out what amount of backlash works for you. For tolerances in general it's best to first tweak the horizontal expansion so you print good tolerances generally speaking, and then tweak backlash to get well-running gears.

@MarcusWolschon 3 года назад

What do you mean with "the inch standard system"? It's either standard or inch. ;)

@antalz 3 года назад

Frankly I'm not sure we can call what the Americans have a "system".

@marklandsaat3696 4 года назад

I like it, keep the math. If people don’t like the math they can fast forward

@icouldntthinkofaname4227 2 года назад

Could you possibly do a video on gear ratios aswell

@antalz 2 года назад

Not totally sure what you mean, the gear ratio is the ratio of the teeth, or the ratio of the pitch diameterss, which is the same because the module must be the same.

@icouldntthinkofaname4227 2 года назад

@@antalz sorry. I meant in terms of force, like lifting weights, and moving loads

@terminator1040 3 года назад

hello , already subscribed i really need your help very good video informative and nicely explained but here's the question i want gears for low to high torque conversion and high speed to low speed i tried to use your formula for like 15teeth to 120teeth keeping pressure angle 20 degree module of 2 and got a shaft diameter of about 135mm after doing all i found out that gears are not meshing properly i agree that i am not a skilled one in this subject so any help from u is greatly appreciated please reply soon, also if any other way of contacting u other than this just let me know thanks in advance

@antalz 3 года назад

Your calculation seems to be correct, do you know what aspect exactly isn't meshing? Are they so far apart they're not meshing at all, are they binding, what's the problem?

@terminator1040 3 года назад

@@antalz thanks for replying they are meshing i mean like a chunky manner as viewed in fusion they are not uniform ofcourse it is not fault of ur formula and i absolutely do not blame u forget about it i mean the 15teeth gears are like rectangles and the 120teeth gears are like triangles can u do me a favor can u design gears like u have done in ur video on how to mount to shaft using two screws that one and with 8 ratios like thing because i am new to fusion and a iam learning sorry for language

@terminator1040 3 года назад

@@antalz i will be waiting for your reply

@terminator1040 3 года назад

@@antalz please reply soon

@antalz 3 года назад

@@terminator1040 You're going to have to learn this yourself I'm afraid. The tooth profiles should be slightly different, but if they're totally different you may have entered different pressure angles for the gears. Once you figured out the profiles, adding the hubs shouldn't be too much of a problem.

@ds-k7878 2 месяца назад

17:53 기어의 압력각에 따른 힘의 방향 설명

@RoamingAdhocrat Год назад

I made some gears with a 10° pressure angle once. all my teeth fell out immediately. would not recommend

@srrlrrmuseumphillips Год назад

What if your in metric?

@antalz Год назад

Not sure what you mean. Metric uses the module in millimeters, customary uses diametral pitch in "per inch", or teeth per inch of diameter.

@srrlrrmuseumphillips Год назад

iPad text issue. S/B “what if you used metric?”

@antalz Год назад

@@srrlrrmuseumphillips In metric you'd just use module measured in millimeters. I'm afraid I don't understand what the problem is. Do you need information on how to convert diametral pitch to module and back?

@Duraltia 4 месяца назад

@18:40 Shouldn't this be an easy to solve problem by adding a Bearing supporting the Motor Gear on the opposite side of the Motor? As in: [Tank Wall] _[Bearing]_ [Gear] [Motor] [Motor] [Gear] _[Bearing]_ [Tank Wall] 🤔 At least that's how I'd approach _such_ a problem on my E-100 ( ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-l3_RcOU3zo0.html ) if I weren't already using off the shelf Tank Gearboxes 🤨

@antalz 3 месяца назад

That's actually quite challenging, because the motor shaft is quite short, and the motor would have to be mounted extremely precisely so that the shaft is exactly in line with the bearing. I don't think this is feasible in practice.