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sbhattacharya-21-Visitor
1-Visitor
January 16, 2017
Question

What is the correct and appropriate way to make a spur gear with equation?

  • January 16, 2017
  • 3 replies
  • 11962 views

Dear Creo Users,

What is the correct and appropriate way or method to create a correct spur gear. There are many tutorials or videos regarding this. But they provide sometimes different formulas. Which are the correct formula or is there any ideal way to make gear with equation and with the help of creo relations and parameter? How can I make spur gear with the help of relations and parameter option in creo?Any ideas, methods or tutorial videos or discussions regarding spur gear creation with equation will be very helpful.

With regards,

Soumya

3 replies

J
JonathanHodgson13-Aquamarine
13-Aquamarine
January 16, 2017

Some forms of the involute equation (I assume you want an involute gear) are given here:

http://mathworld.wolfram.com/CircleInvolute.html

The involute should be defined from the base circle; you can then use the root and tip diameters to define the limits of the actual tooth flank.  You can use rounds to give a good approximation to the root profile, although if it's a hobbed gear then the root should really be a trochoid.

S
sbhattacharya-21-VisitorAuthor
1-Visitor
January 20, 2017

Dear Creo users,

Any other professional help regarding Making spur gear in creo with equations and parameters.will be immense helpful.

In youtube there are many tutorials but which of them are correct method I don't know.

any tutorial videos will help

T
TomD.inPDX17-Peridot
17-Peridot
January 20, 2017

You will find a lot of discussions here in the community on this matter.

It would be helpful to know what your end-goal is.

S
sbhattacharya-21-VisitorAuthor
1-Visitor
January 24, 2017

Hi Antonius, Thanks for your reply. I have studied the equations of involute curve by using the pdf I have attached. But I have a question. I have seen that in all tutorials the involute curve starts from 90 degree. If the gear teeth is not placed in exact 90 degree position and starts from another angle then how do I change involute curve position?

V
vu182921-Visitor
1-Visitor
June 7, 2018

I know this is a year old, but I actually managed to do this. Check out my fully parametric spur gear on grabcad. The involute is in a datum curve: https://grabcad.com/library/parametric-involute-spur-gear-generator-1

 

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