Have you considered Nexen linear positioning systems? http://nexengroup.com/nxn/products/prod-nav/lp/Roller+Pinion+System
On Mon, Jul 31, 2017 at 6:53 AM, andy pugh <bodge...@gmail.com> wrote: > On 31 July 2017 at 12:13, Tomaz T. <tomaz_...@hotmail.com> wrote: > > For my future project (cnc router) I will have to use helical rack and > pinion system on two longer axis (2 and 3.5m). There are some designs where > pinion is forced against rack with spring tensioner > > It ocurred to me a while ago that if using a double-helical rack and > pinion then you can achieve zero backlash with an axial displacement > of the pinion/gear relative to the rack. > I don't know if anyone has ever done that. > > -- > atp > "A motorcycle is a bicycle with a pandemonium attachment and is > designed for the especial use of mechanical geniuses, daredevils and > lunatics." > — George Fitch, Atlanta Constitution Newspaper, 1916 > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
