I don't know about anyone else but I would think someone that could design and build a wheel with slots and then install a device to read the slots could then, without much problem, design a holding device for all concerned items. :) IMHO Stuart
On Sat, Jun 13, 2009 at 10:36 AM, Kirk Wallace<kwall...@wallacecompany.com> wrote: > On Sat, 2009-06-13 at 08:17 -0700, Lawrence Glaister wrote: >> Hi Kirk, >> Looks like you have been having fun in gcode. One thing you might want >> to consider for an encoder wheel is to make the cutouts the same size as >> the solid areas to get as close to a 50% duty cycle on the detector(s) >> as possible. > > The slots should have a 50% duty. I think the cutter radius compensation > is implying otherwise. > >> You didnt say if you were just using the wheel for a pulse >> generator or a 2 channel encoder. You might also consider adding another >> hole for an index detector if you need that. > > Here is my MPG version 1: > http://www.wallacecompany.com/machine_shop/Shizuoka/mpg_proto-1a.jpg > >> Along a similar line, you can check out a lathe spindle encoder I built >> a while back. The gcode program can be adjusted to make an encoder of >> any number of pulses. If you are using slot source/detectors, you have >> to make sure the holes in the disk can be reached. > > Thanks for the links, I have referred to them often. > > I can never find the sensor I want with the mounting I like. I'll > probably end up gluing mine to a small plate with holes. Why can't > sensor designers read my mind. > -- > Kirk Wallace > http://www.wallacecompany.com/machine_shop/ > http://www.wallacecompany.com/E45/index.html > California, USA > > > ------------------------------------------------------------------------------ > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > http://p.sf.net/sfu/businessobjects > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > -- you can lead a person to knowledge but you cannot make him think ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
