On Tuesday 08 December 2015 07:24:43 John Thornton wrote: > Could you "thread" that on a lathe? > > JT > > On 12/7/2015 10:17 AM, andy pugh wrote: > > On 7 December 2015 at 15:54, Sarah Armstrong > > > > <[email protected]> wrote: > >> how did your cad turn out > > > > https://picasaweb.google.com/lh/photo/jQREjwevQMPSQyyJspt0wtMTjNZETY > >myPJy0liipFm0?feat=directlink > I don't think you would have much trouble doing the worm on a lathe with G76. You would need to write a multistart wrapper for G76 but thats easily done. The tool would need to be profiled for gear cutting as opposed to thread cutting and the tools attack angle would need a method to tilt it a few degrees, shimming under one edge of it with a drill bit, or you spend too much time sharpening it.
The pinion now would be difficult if not impossible without obtaining a motorized indexing head, and mounting the tool sideways. But that would imply slaving the indexing head to Z. Nothing is impossible, but that would take a very creative hal file I'd think. Timewise to create all that, I'd use my A table on the mill, and either a shaped fly cutter or the hob. The hob would likely be 100x more accurate for tooth shape although the fly cutter could be shaped on a diamond disk with the angles set by the A table. I have done that several times, but I'm not working for a living either. Its also hell on more than one of those twenty dollar dremel diamond disks. Your P&L sheet for that whole operation would show the sad folly. :( Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Some mill pix are at: Genes Web page <http://geneslinuxbox.net:6309/gene/GO704-pix> ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741911&iu=/4140 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
