On Thu, 2008-06-12 at 08:31 +0100, Steve Blackmore wrote: ... snip > > http://www.jeffree.co.uk/Pages/cnc-wheel-cutting-engine.htm > > I've seen that in operation and used it at a show here in the UK, it's > not slow, gear cutter rpm was about 2500 rpm and you can stuff the > cutter through the blank full depth - I guess feed was about 100 ipm. > > On thin brass blanks, I reckon it takes no longer than 1 second a tooth. > > Steve Blackmore
What I am proposing is a little different. The machine above uses a cutter that cuts one complete gear tooth form that matches the pitch and diameter for the gear being made. Theoretically, each gear diameter and pitch needs to have a custom cutter, but sometimes one cutter can be used for a few different gear diameters within the same pitch class. So if you cut allot different gears, you will need allot of expensive cutters. I want to use the same style cutter, except it will cut a simple radiused groove with a radius slightly smaller than the smallest radius in the gear tooth form. The cutter would be used like a ball end-mill to follow the tooth shape. I would only need a cutter for each pitch. It might even be possible to have indexable tooling. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC/EMC CNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/EMC CNC) ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
