Enco Mill
Model 91002
Serial # 3-7-89
Mfg. Date 1983
I think the Mfg. date and the serial number are turned around, but that is how it is on the name plate.
I removed the x-table and thoroughly cleaned the surface where the encoder will be mounted. Picture below shows encoder centered and clamped in place to punch mounting holes.
After drilling and tapping the mounting holes, the y-table was slid back on x-table and centered. The encoder was then screwed in place and the sensor centered to punch those mounting holes. I think I could have punched both set of holes in one operation with the encoder clamped in place. Oh well,, hind site is always better than fore site.
The y-table was again removed from x-table and set up in the drill press to drill and tap holes to mount a 1/4 X 3 inch aluminum plate.
In the mounting kit that came with the encoders, included an aluminum angle called a spar. This was screw to the aluminum plate. I could have mounted the encoder directly on the plate, but the spar was included and it will add rigidity to the installation.
In these two pictures you will see a black metal bracket attached to the encoders sensor, along with a 2 1/2 inch piece of angle iron. With the y-table and encoder centered, the length of the angle iron was determined. Next a slot was cut to mount the angle to a machine mounting bolt, then mounting it in place and marked for the sensor mounting. The slotted side of the angle had to be mill off so as not ot push the sensor out of alignment.
My mill is squeezed between a wooden shelf unit on the left and a metal locker cabinet on the right. These units are too close to mount the read-out on the machine, so the mounting arm was bolted to the wood self unit.
As it turned out, this installation was not as difficult as i had envisioned it would be. Hope you enjoyed reading this article.