Have you considered blacking the part? Either anodizing or flat black paint?
--J. Ray Mitchell Jr. [email protected] "Good enough is the enemy of excellence"author unknown On Mon, Aug 24, 2020 at 10:18 AM John Dammeyer <[email protected]> wrote: > Slotted Optical. Here are larger photos. When I cut the teeth I forgot > to change to the 3mm mill so they were cut with a 4mm. Made the gap to > tooth wrong but it should still be alright. Look carefully at the larger > photos and you can see the index slot. It was done with the 3mm mill. > > AlibreCAD/CAM > http://www.autoartisans.com/mill/EncoderDisk.jpg > Old TEC86 S100 computer front panel about 1/8" aluminium. > http://www.autoartisans.com/mill/EncoderDiskCut.jpg > By the third tooth I realized the cutter was too big and I'd forgotten to > change tools. > http://www.autoartisans.com/mill/EncoderTeethCut.jpg > Then the center hole. Cut at 02.7. Was supposed to be 2.75. Typo when I > did the CAD. > http://www.autoartisans.com/mill/EncoderDiskCenterCut.jpg > I ended up mounting it in the 4 jaw on the lathe and bringing it out to > 2.75" it was a nice slip fit onto the pulley. Here you can clearly see the > index slot. > http://www.autoartisans.com/mill/MountedEncoderDisk.jpg > And that's when I realized I'd forgotten to shave the teeth edge down to > 0.0625" because the slot in the sensor is also 0.125". So back on the > original between centers tapered arbor I used to make the pulley. > http://www.autoartisans.com/mill/Arbour-5.jpg > and the final result ready to go back on the mill. > http://www.autoartisans.com/mill/ShavedEncoderDisk.jpg > For my Gingery Lathe I 3D printed a black disk that turned out to be > completely transparent to the sensors so I needed to use metalized paint to > make it opaque. > I 3D printed the holder for the sensors > http://www.autoartisans.com/Lathe/SlottedSensorMount2s.jpg > > Not sure yet how to mount them for the mill. > John > > > > > -----Original Message----- > > From: Chris Albertson [mailto:[email protected]] > > Sent: August-24-20 9:10 AM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Spindle Speed sensing. > > > > I had assumed it was magnetic from the looks of the short teeth. > > > > My question is it there is an index channel. You would need one for > > tapping but not for a simple speed sensor > > > > On Mon, Aug 24, 2020 at 6:59 AM jrmitchellj <[email protected]> > wrote: > > > > > are you going to use HALL sensors with that, or optical? > > > > > > --J. Ray Mitchell Jr. > > > [email protected] > > > > > > > > > > > > "Good enough is the enemy of excellence"author unknown > > > > > > > > > On Sat, Aug 22, 2020 at 5:43 PM John Dammeyer <[email protected]> > > > wrote: > > > > > > > Making progress. Now to make a bracket that holds the sensors and > > > connect > > > > to the second breakout board and MESA 7i92H. That will probably > take me > > > > another month� > > > > > > > > John > > > > > > > > > > > > "ELS! Nothing else works as well for your Lathe" > > > > Automation Artisans Inc. > > > > www dot autoartisans dot com > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > -- > > > > Chris Albertson > > Redondo Beach, California > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
