On Monday 17 February 2020 16:57:36 Les Newell 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...
I think my existing bracket can do the latter spaceing, thanks Les. > > 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 > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
