On Thu, Jul 4, 2013 at 7:06 AM, Gregg Eshelman <[email protected]> wrote: > I've seen videos of turbine wheels being cut with a ball nose straight end > mill on a 5 axis machine. Why not cut involute spur gears on a 4 axis with > end mills? > > Can LinuxCNC do that? Would be hellaciously less expensive than buying all > those sets of 8 cutters to cover different diametral pitches and pressure > angles. Hobs come in a bit less since you only need one hob per DP and PA to > cut any number of teeth but also need a spindle encoder to synchronize the > 4th axis. > > End mills + software = way cheaper. Probably slower than using individual > cutters, certainly slower than hobbing, but should be as accurate as hobbing > where the 8 cutters are only accurate at the lowest number of teeth for each > one. >
I should mention the best form is rack form which on a fly cutter would be simple to grind and have the straight lines I mentioned, you need 5 axis to tilt the cutter by the involute angle for end mill or you follow the pcd with an offset around the circle to get that angle Dave Caroline ------------------------------------------------------------------------------ This SF.net email is sponsored by Windows: Build for Windows Store. http://p.sf.net/sfu/windows-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
