Calculating the Number of Teeth in a Gear

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1

Good evening

I'm currently working on my end-of-year project (a land drone) and I'm having some problems with the tracks on it. Indeed I can't calculate the number of teeth to put on my gear... As for the shape of the teeth, I have no problems since it's a bicycle chain (and I've already modeled it). So I'll be to know if we could calculate it directly via some CAD software, or even if someone knows the formulas! Because being only in terminal I try to look I row ^^'.

 

Technical data:

- Total weight of the drone: 10kg (although I don't think you'll need it)

- Gear diameters: 85mm (in the optimum +/- 5mm if needed)

- Total track lengths (end to end): 250mm (+/- 14mm via removable motor module)

- Track lengths (from the center of one gear to another): 193.15mm (+/- 14mm for the same reasons)  

 

Thanks in advance! If you need any other data, I will give it to you.

2

already you have an element 

the center distance of the axes that you didn't side and yet it's the main one

 that will give you the step of the teeth

https://www.michaud-chailly.fr/fr/pignon-chaine-simple-acier-norme-b-pas-8-mm-a1-01-05

This link will give you the type of sprocket and its diameter

@+ ;-)

2 Likes
3

It all depends on the ratio you need but the GT22 link is very explicit, the number of teeth gives you the diameter of the sprocket and vice-versa.

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4

Hello

Some information here and it's better to do it by calculation than by software, it allows you to learn instead of just using software...

Kind regards

4 Likes
5

Looking for the notions of primitive diameter, make an analogy between gears with teeth and chain/pinions

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6

Thank you all! I'm going to look at all this ^^ I'll tell you again once it's finished.

7

(and for the ratio it's just a 1:1 ratio)