On Tue, 2009-05-12 at 22:22 -0400, Kent A. Reed wrote: > Gentle persons: > > Kirk and others may find the following references to be useful: > > 1) "The Involute Curve, Drafting a Gear in CAD and Applications," by > Nick Carter. http://www.cartertools.com/involute.html > > 2) "Direct Gear Design for Spur and Helical Involute Gears," by > Alexander L. Kapelevich and Roderick E. Kleiss. > http://www.akgears.com/pdf/direct.pdf
Thanks Kent. These are good links. > Regarding calculating tables of values of Kirk's representation of an > involute of a circle, or any other parametric equations, don't forget > that OpenOffice Calc is a fully functional spreadsheet application that > has all the necessary mathematical machinery including trig functions > like sine, cosine, and arctangent. OpenOffice is available for and runs > in Linux, Winders, etc. Like Microsoft Excel, it can generate various > forms of plots, although I personally don't like either for generating > publication-ready graphs. It should be easy to code up Calc and/or Excel > programs to automate the calculations discussed in the above papers. It didn't occur to me to use OpenOffice. Sometimes I can't see the forest for the trees. > As for displaying mathematical functions easily, one can take advantage > of the OpenOffice Math interface, but since I'm an old-fart (it's > official, even the Social Security Administration says so), I use LaTeX, > which has been around since the days when all we had were mainframe > computers (and had to walk barefoot through the snow to hand over our > punched card decks to the operator at the counter). Now that MathML is > fairly mature, there is a lot of interest in MathML-based tools. See, > for example, the following MIT pages on displaying mathematics: > > http://web.mit.edu/acs/faq/webmath/contents.html and > http://web.mit.edu/ist/topics/webpublishing/mathml/ I'll have to check these links out when I get time. Also, it's "interesting" what you get when one searches "latex" on Google. > Finally, regarding the Machinery's Handbook, just find the cheapest > price for any recent edition. I bought my 26th Edition (2002) copy on > eBay in 2005 for about $35. With the exception of a torn fly leaf, it > was in pristine condition. Sometimes eBay is cheapest, sometimes > abebooks.com, sometimes amazon.com. Like everything else, you have to be > patient. > > Regards, > Kent It took me a while to realize that the British metric section in my nineteenth edition is still applicable, or close enough. I agree there are great deals to be had on eBay, but it seems to be getting harder, or maybe, more fun. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ The NEW KODAK i700 Series Scanners deliver under ANY circumstances! Your production scanning environment may not be a perfect world - but thanks to Kodak, there's a perfect scanner to get the job done! With the NEW KODAK i700 Series Scanner you'll get full speed at 300 dpi even with all image processing features enabled. http://p.sf.net/sfu/kodak-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
