|Project by ChunkyC||posted 08-24-2011 04:52 PM||5681 views||4 times favorited||21 comments|
Spray Paint Can Shaker – Designed to run on my drill press. It’s made from 3/4” Red Wood ply and Walnut for the hardwood “wear” pieces. It uses a simple offset circle for the cam. The cam follower is a 1/4×5/8×7/16 steel ball bearing mounted into a 3/4×3/4×4-1/2 length of walnut.
For prototype I, it works surprisingly well. It works best when running at about 17 hz on the drill press.
I have one design problem that I have yet to sort out. The rod coupler that I’m using for the drill press to bite onto seems to slip when running. Which in turn is causing the nylock nut on the outside to tighten. It may just be the nylock nut tightening up on it’s own, I’m not certain yet but when it does, it makes the cam assembly way to tight and will eventually lock up. I may need to drill and pin the rod coupler through the threaded rod so that it can’t move. Don’t know yet…
I did forget about milling the groves in the sides so the lower assembly would be “captured.” I’m not sure now how to go about milling them but it works never the less. I was concerned that the lower assembly would have a tendency to push out and go flying across the shop. But it stays in place quite nicely. It makes loading the can a bit tricky though.
I hope I can get the design problems sort out because man how I hate shaking “rattlers!”
-- Chunk's Workshop pictures: http://spadfest.rcspads.com/thumbnails.php?album=135