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cutting gears
dallen Offline
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#1
07-01-2012, 10:48 PM
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
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TOM REED Offline
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#2
07-01-2012, 11:02 PM (This post was last modified: 07-02-2012, 06:06 AM by EdK.)
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
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Mayhem Offline
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#3
07-01-2012, 11:37 PM
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.
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Mayhem Offline
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oldgoaly (08-26-2013)
#4
07-02-2012, 06:06 AM (This post was last modified: 07-02-2012, 06:08 AM by Mayhem.)
Hi David - Give Metal Shop Calculator a go.

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

   

It also has some other good features which I find useful.
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EdK Offline
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oldgoaly (08-26-2013)
#5
07-02-2012, 06:18 AM
Here's a calculator for gear stuff. It's at the bottom of the web page.

http://gizmology.net/gears.htm

Ed
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oldgoaly (08-26-2013)
#6
07-02-2012, 06:50 AM
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" Big Grin
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dallen Offline
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#7
07-02-2012, 08:00 AM (This post was last modified: 07-02-2012, 09:07 AM by dallen.)
Thanks guy's ya'll just saved me from doing this for another week BashBashBash

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
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Highpower Offline
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#8
07-02-2012, 08:11 AM
Cool. What type of cutter(s) will you be using D? Cool
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krv3000 Offline
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#9
07-02-2012, 08:32 AM
ooo theirs a project
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dallen Offline
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#10
07-02-2012, 09:10 AM
(07-02-2012, 08:11 AM)Highpower Wrote: Cool. What type of cutter(s) will you be using D? Cool


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
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