The Beall Clock Forum

General => Wheels and pinions => Topic started by: jrbeall on September 08, 2005, 04:55:56 AM

Title: The module system for tooth design
Post by: jrbeall on September 08, 2005, 04:55:56 AM
There is a highly developed system for designing wheel and pinion teeth.  It allows you to develop cycloidal gearing in an endless variety of shapes and sizes.  Brass clock makers have been using it for a very long time.  A book, which I have already mentioned, (Gears for Small Mechanisms by W. O. Davis) gives standards and reference tables for using this system.  I have been searching for a source for the book but have only found it in hard cover, used, so far.  I bought mine new in paper back several years ago.  I will keep looking.
Title: The module system for tooth design
Post by: JayRay_Hughes on September 12, 2005, 07:17:45 AM
I have found a source for this book. Does anybody have a couple hundred dollars for an old beat up copy. Any one. I hope a decent priced reprint may come one day. Looks like its a collectors item. Nice catch jrbeall.

This wed site  also recommends this book, but also this wed page

The web page is a ground up in detail with theory, math, pics, etc. on the design of cycloidal gears.

I don't know if it is as good as the book(never seen it, don't have $200), but may be good enough.
Title: The module system for tooth design
Post by: jrbeall on September 12, 2005, 09:16:54 AM
OK,  I have found a source for the book, "Gears for Small Mechanisms"  in the UK.  The price is not too bad, probably about #30.00 but the web site  you just gave has all the pertinent data and is really all you need.  The modules it give are all metric and that is what standard clock and watch people use.  The formilas will work with imperial measurements as well and the ones I gave for my clocks are in inches.  If enough people want the book, I will order a batch and sell them in my catalog, so let me know if you want one.  You can Email me at [email protected] .
Title: Source for Involute and Cycloidal Gear-Wheel Generator Softw
Post by: allenbarnett on January 19, 2006, 07:08:06 AM
Enjoying the site.  Lots of good info.  Just not a lot of activity.

Just wanted to pass along a source for a Involute and Cycloidal Gear-Wheel Generator.  It will generate a drawing of a gear in DXF format that can then be imported into a CAD program for printing.

I've had a set of plans from Barren Creek Clocks for several years and could never sort out the gear profiles.

Here is a link (also sometimes listed on EBay):

Allen Barnett
So. Maryland