I cadded them up.. The slots in the bracket was enough to get decent quadrature
http://electronicsam.com/images/greenmachine/20190401_145539.jpg On Mon, Feb 17, 2020, 3:59 PM Les Newell <les.new...@fastmail.co.uk> wrote: > They should be any multiple of the tooth spacing plus half a tooth spacing. > > Your tooth spacing (pi x diameter) / number of teeth = 0.314" > > So the available spacings between the sensor are: > > (0.314 x 0) + (0.314 / 2) = 0.157 > > (0.314 x 1) + (0.314 / 2) = 0.471 > > and so on... > > > You won't get a perfect quadrature but it should be good enough. > > > Les > > > > > > On 17/02/2020 21:20, Gene Heskett wrote: > > Greetings all; > > > > Given that the bull gear in this lathe is exactly 6" in diameter at the > > outer face of the teeth; > > > > Given that it has 60 teeth; > > > > Given that the ATS-667's are mounted so as to clear the teeth by about 10 > > to 15 thou and they are slightly thicker than 5/32" inch. That would > > add about 3/16" to the radius of the arc they are mounted in, or 3/8" to > > the diameter; > > > > The mounting bracket currently has a slot per ATS-667 with around 1/16" > > of sideways motion per pocket; > > > > How far apart are they to be to output a good quadrature signal? > > > > Mounting them with JBKwik weld seems to be a lot less forgiving because > > its not possible to move them a few thou to fine tune like it was when > > using relatively flexible goop. > > > > Or do I need to redesign the bracket to make one holding slot adjustable > > somehow? > > > > Thanks all. > > > > Cheers, Gene Heskett > > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
