Cogs and shapes 3

[Wedwin]

I feel the need to design a module or two of a cogwheel.

While I have seen many a nice picture on the net, I haven't come across a good description of how to actually design a cog tooth.

My aim is a standard metrical spur cogwheel.

This problem has bested even "Karl Bjorks lilla gula"

 

[Wedwin]

Thanks, another step forward.

 

[MadMango]

I am surprised that no one has pointed to towards purchasing a Machinery's Handbook. There's ~120 pages devoted specifically to gear design.

[green]"Art without engineering is dreaming; Engineering without art is calculating."[/green]

Have you read faq731-376 to make the best use of Eng-Tips Forums?

 

[MikeHalloran]

You mean, like, in message #6?



Mike Halloran
Pembroke Pines, FL, USA

 

[Wedwin]

The internet is vast and I searched for :
cog, cogs, cogwheels, gear, spur, and a few others. Yet another set of Swedish words too.

As you may be able to figure out, I came up with nothing. Much to my surprise.

Yes I would like to buy the suggested book and more. I bet "Karlebo handbok" (Swedish machinists cult handbook) would contain the information as well, but it cost an arm and a leg. But there is a limit to my use of that sort of information.

So I am grateful for the help I have gotten.

 

[MadMango]

Mike, sorry. Sometimes I can't see the forest because of the trees.

[green]"Art without engineering is dreaming; Engineering without art is calculating."[/green]

Have you read faq731-376 to make the best use of Eng-Tips Forums?

 

[Wedwin]

Yes

 

[Timelord]

Wedwin,

Here is a link to a gear catalog from Boston Gear. Towards the end of the catalog is a section on gear development and nomenclature that should help you out.

http://bostongear.com/pdf/catalogs/P-1482-BG_cat-OpenGearing.pdf

Timelord

 

[Wedwin]

Thanks a lot! Very informative.

Those teeth are made according to the system used in the US only. But the information is indeed very good.

 

[ScottyUK]

Some links which might help you:

http://www.meshingwithgears.com/faq.htm

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Sometimes I only open my mouth to swap feet...