Post by lynkspyder on Dec 28, 2017 21:57:33 GMT -5
I picked up an AR8 Pro at the beginning of the year. I really like it, but like many of you, wished I had held off a bit for the Pro+ for 4th axis. But it is what it is, and I make due with what I have. I picked up a Chinese water cooled spindle/VFD and have mounted it horizontally for some small sized turn projects. Because the spindle is high speed fitted for ER20, I found it difficult to find a small and lightweight 3 jaw chuck that would mount safely to my setup. Not finding one, I decided to build one from scratch. Since I can't easily cut bevel gears, I cut a planetary gear on the back of the scroll plate, with a pinion that extends out of the back of the chuck. Not perfectly ideal, but works pretty well. 7/16 wrench is used to open and close the jaws (pinion advances the planetary, which feeds the 1/8" steel dowels mounted to the bottom of the jaws through the scroll spiral). It all mounts via a pressed 1/4" steel dowel. There is a bit of runout because of pressing into soft material. Not currently an issue for my projects, but that is the next area to redesign. The chuck is 4" in diameter.
