in some cases, a tap can be ground to serve as a gear cutter. --- On Wed, 7/3/13, Dave Caroline <[email protected]> wrote:
> From: Dave Caroline <[email protected]> > Subject: Re: [Emc-users] Cutting involute spur gears with 4 axis? > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Date: Wednesday, July 3, 2013, 11:52 PM > 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? > > Already been done > http://www.youtube.com/watch?v=SJQtx80euGM > > It is a slow process though > > I have a gcode implementation with a slitting saw > > > > > > 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. > > Here the rotary adds error due to the worm and worm gear > error and any > backlash, the gcode has to be unidirectional to remove the > backlash > error, the worm and worm gear error is partly removed by the > hobbing > process but to a lesser extent with a single cutter. > > > 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 > ------------------------------------------------------------------------------ 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
