2 Geared Cams

thingiverse

A mechanism first seen on GrabCad: https://grabcad.com/library/gears-cams-sliders-hammer-mechanism-1 A nice example of a cam operated shuttle mechanism. Designed in Moi (Moment of Inspiration), simulated in SimLab Composer Mechanical, and made in Diamond Age PLA on an Ultimaker original. A video of a simulation of the final design (bar one change) is here: https://youtu.be/cHt5Pa25lRg And a video of the printed model is here: https://youtu.be/8rOMdYrTlWI A 3D pdf file allowing viewing of the running model from any angle is included in the files. Print Settings Printer Brand: Ultimaker Printer: Ultimaker Original Rafts: No Supports: No Resolution: .02mm Infill: 20%-40% Notes: All parts made in Diamond Age PLA. It is very important that the bigger pars are as flat as possible, especially the base. I had difficulty keeping the base flat enough and redesigned it to reduce the amount of material. And I was very careful in setting the nozzle print surface gap. I used a brim on all parts. For the base I used 1.2mm walls, 1.0mm top and base, 20% infill. Most everything else 1.2mm walls, top and bottom and 30% infill. 210C. The screws are all 3mm Button Head Cap Screws 10mm long. I used 20, but there is provision for a total of 32. Post-Printing Remove excess material and open the holes in which things rotate to size. I use hand reamers (with these handles: http://www.thingiverse.com/thing:386855). Check that the slid parts slide freely. Check that the pegs move easily in the cam groove and the the various slots. Start assembling. I used 3mm Button Head Cap Screws 10mm long. I used 20, but there is provision for a total of 32. Firstly attach the blocks to the base. Then the gears making sure to orient them so that the grooves are (more or less) in the positions shown in the first photo.. Pre-assemble the main bracket and then slide it into the groove in the base. Finally the levers.