MetalworkingFun Forum

I am wanting to cut some gears, now this subject is just full of math which I lack a bunch of.
What I am hoping is that someone has or knows a formlua that I can use to calculate the outside diameter of gear blanks.

the reason for this madness is that I am missing some of the change gears for my lathe an I figure that I may as well learn how to cut them so that I can make what I need, but for the life of me can't seem to figure out how to calculate the blank size.

thanks in advance
David

check my recent pos for valuable information site thru that site you will be able to find the information you desire mathematical tables etc tom

http://www.metalworkingfun.com/showthread.php?tid=543

I don't have the experience to help but will be watching with interest.

I recall seeing an online calculator that did numerous things with regards to gears. I'll check when I'm home to see if I book marked it.

Hi David - Give Metal Shop Calculator a go.

Here is a screen shot of the gear page from the version I am running:

[attachment=2147]

It also has some other good features which I find useful.

Here's a calculator for gear stuff. It's at the bottom of the web page.

http://gizmology.net/gears.htm

Ed

If you wish to do it the long way ( good to know) here are the formulas.

http://shopswarf.orconhosting.net.nz/spur.html

"Billy G"

Thanks guy's ya'll just saved me from doing this for another week

I get the mill set back up with the indexer on it I'll take some pictures post em in here although it may be a few days, need to get/make and arbor to put the blanks onto.

DAllen

Cool. What type of cutter(s) will you be using D?

ooo theirs a project

(07-02-2012, 08:11 AM)Highpower Wrote: [ -> ]Cool. What type of cutter(s) will you be using D?

cheap chinese import involute cutters cause they won't completely empty the wallet. and I should be able to cut a gear in two passes one roughing and a finish pass of a couple thousands

DA