KeggBot

thingiverse

Hi makers!\nUpdate 04/12/17: First print can be seen here!https://youtu.be/JJ2utKqm15Y\nSee instructions section for details on parts and assembly.\nCompleted fine tuning, I'll print off some eggs and post pics from here on out.\nUpdate 04/11/17: Fit test passed. It went together really well last night. The last edit I have to make is to open up the hole for the pen in the pen holder to accept larger pens. I will also add an optional modified vertical arm (longer) to make the design more flexible for larger sized oval objects...like Grade A eggs.\nFunctional video and assembly instructions tonight: Just in time for Easter!\nUpdate 04/10/17: I found that the hex holes were too small for the nuts so I updated the relevant files denoted with "V2". M3 hardware for all the small holes. The bearings are standard skate bearings with 8mm ID and I used 1/4-20 rod there. 3/8-16 rod for the larger holes connecting all the mounting pieces. Full instructions and build update tomorrow.\nUpdate 04/09/17: I am almost done printing it all up; should have fit test and functional test tomorrow. Stay tuned for updates just in time for Easter ;)\nMy take on the Eggbot or Sphere O Bot.\nI tried to design the assembly so that most spacing is adjustable for a more flexible design. I was having issues with other designs when trying to center the pen on the egg motor axis. Also, other designs limited the size of the object/egg/sphere. Eventually, I envision the carriage being linked to another stepper motor so that objects like bottles could be drawn upon automatically.\nYou'll need 3/8" threaded rod and nuts to assemble on top of the standard 3mm nuts and bots to connect the stepper motors and couplings. A spring is also not shown yet.\nCurrently a work in progress, I am working on a quick pen exchange scheme \nPrint Settings\nPrinter Brand: FlashForge\nPrinter: Creator Pro\nRafts: Doesn't Matter\nSupports: Yes\nResolution: 0.2mm\nInfill: 20% or more\nNotes: Many parts will need support, I tried to minimize this where possible.\nI printed the black parts from PETG and the green from ABS. Be wary of shrinkage with ABS...\nHow I Designed This\nSolidworks. I used it to design the assembly so that most spacing is adjustable for a more flexible design.\n"Quick Start" Instructions:\nInsert skate bearings into Egg Bearing Mount. They should press fit but if they are loose there is a screw hole that can secure the bearing and doubles to mount the Arduino.\nInsert a Spring Pad into each skate bearing. These press fit into the bearing hole and accommodate the 1/4"-20 rod.\nMount NEMA motor on the Egg Motor Mount using 3 mm x 10 mm bolts. Do the same for the NEMA motor on the Pen Motor Mount. \nAttach the Egg Motor Coupling to the Egg NEMA motor using 3 mm x 8 mm bolts and nuts. Make sure to align flat feature of motor shaft with coupling feature.\nAttach the Pen Vertical Adjustment to the Pen Motor Coupling using 3 mm x 8 mm bolts and nuts.\nAttach the Pen Motor Coupling to the pen motor using 3 mm x 8 mm bolt and nut. Make sure to align the flat feature of the motor shaft with the coupling. Attach Oring to the coupling.\nAttach the Servo to the Vertical Arm Adjustment using included screws.\nInsert nut and thread 3 mm x 10 mm bolt into Pen Arm for holding pen\nAttach the Pen Arm to the Vertical Arm Adjustment using the 3 mm x 25 mm bolt and nut.\nUse 3/8"-16 x 6" rod to secure the Carriage to the Pen Motor Mount.\nThread the 1/4"-20 rod into the Tailstock coupling. Insert Oring into the coupling face. Insert spring onto rod.\nRun the 1/4"-20 rod through the Spring Pads and attach the Spring Knob using 1/4"-20 nut.\nRun 3/8"-16 rod through Egg Motor Mount, through Carriage, and through Egg Bearing Mount. Secure using nuts keeping in mind you will want to make adjustments later...\nAttach electronics to the Egg Bearing Mount using 3 mm x 10 mm bolts.\nWire up and test!