Lawrence Glaister <ve...@...> writes: > > On Mon, 2010-04-05 at 07:50 +0000, kestreltom wrote: > > Lawrence Glaister <ve...@...> writes: > > > > > > > > Hi group, > > > I am looking at building an A axis for my mill and was wondering if > > > anyone has a junk robot arm in pieces and would consider selling one of > > > the joints with or without the drive(servo or stepper) and the harmonic > > > gear box. The plan would be to mount a 4" or so lathe chuck on the slow > > > side of the harmonic drive for holding the work. > > > cheers > > > LawrenceG > > > > > > > > > Lawrence, > > > > Do you mean something like this? > > > > http://cgi.ebay.com/GEARMOTOR-HARMONIC-DRIVE-SYSTEMS-100-1- > > RATIO_W0QQitemZ280487059939QQt_1165#ht_711wt_1165 > > > > Tom > > > very close.... but that one is 12"x18"... a little large to fit on my > minimill table! Item number:280487059939 > > cheers > Lawrence, Sorry - I missed that. I have some small harmonic drive/servos with integral housing/output shaft and bearing, but I doubt they are stout enough to swing a 4" lathe chuck directly. Are you looking for a specific output shaft size, or do you currently have a bearing/shaft/flange mount for holding the lathe chuck at one end and the harmonic drive & servo at the other? Tom
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