On Sun, 2009-05-24 at 16:43 -0500, Andre B. wrote: > Have you looked at geargen11 it is an old DOS program should still be > available someplace.
Thanks for your reply Andre. I made an OpenOffice spreadsheet that calculates the involute points: http://www.wallacecompany.com/machine_shop/gears/involute-1c.ods I use these points in QCAD, to generate short lines for the tooth profile, then mirror: http://www.wallacecompany.com/machine_shop/gears/Gear_Development-1a.png then rotate/copy the tooth to get the rest of the gear. http://www.wallacecompany.com/machine_shop/gears/gear.png I used dxf2gcode to get the g-code file: http://www.wallacecompany.com/machine_shop/EMC2/ngc/STN_tool_chg_gear_10t-2a.ngc (Short URL preview, link) http://preview.alturl.com/btgf http://alturl.com/btgf I made some 2 module 10 tooth gears with this. The resulting machined gears turned out very well. I wanted to make a utility to automate all of this, but for the gears and methods I am thinking about using, the root profile will need to be created by hand. For instance, for the 2m10t gears, I used a .0625" diameter end mill to follow the gear outline to cut .0625" thick sheet. Because of the low number of teeth and the root radius was set by the end mill diameter, I had to use a non-standard root shape. Wider gears will need to be to be cut with a rack form tool and a rotary axis, so working out the involute shape isn't needed, just the gear angle and cutter linear offset. With this in mind, the process I have so far, may be all that I need. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://www.creativitycat.com _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
