Homebrew CNC Gantry Painter

[vacpress]

Heres the first 4 hours of a potential design:





The friction belt is driven directly by the stepper which has 10x microstepping driver

the airbrush is $10.00 from harborfreight!

[vacpress]

[vacpress]

any solidworks users want the files? i would love if someone would do some mods.

this is the last digital image. i have all these parts allready, thats what inspired the particular design choices. i will take apicture of them and make a parts list.

[owhite]

incredible drawings. solidworks?

[vacpress]

yep. solidworks. started at 2:30am, this far along at 6:30am

[owhite]

get some rest. you look tired.

[Bloy2004]

yes! Incredible! ...have been following this and related threads....

[vacpress]

if anyone ever needs a very fast CAD\3D Designer....


anyone with experience using friction belts got any sugestions for the design of the "tensioners"? i just have 2 nylon bushing holding the belt against the pulley now.. i think they may need to go closer together? should i put one on a spring-loaded cam?

One thing I like is that if i update these photos, they update here also, so i can just change these to new ones when i do another few hours modeling. gonna put in all the bolt holes, and bolts and screws, "limit switch" whiskers, "optical" home sensor & tags. etc. i am also going to design a pneumatic manifold and a 3 color printhead.

Any good ideas?

[Bloy2004]

..just a thought...
you could incorporate a toothed pulley on the motor and use a matching open-ended toothed belt to make a more positive drive.
the nylon bushings could be on bearings to "roll" with the belt.

[vacpress]

the belt is a belt with a bunch of tiny teeth, and so is the pulley. its from an old dotmatrix printer.

heres all my parts i have. all i need is to cut the acrylic, assemble the thing, and get 2 more xylotex drivers.

the small stepper has gears and will push the lever on the airbrush via the bike brake cable.

the tablet PC can run turboCNC, or other control software. the LCD will be used to configure the PIC microchip for the multicolor printhead when i do that.



parts list, cost, and sources list forthcomming, as well as construction pictures.

i have been waiting to have a project that i allready have all the parts for. finally! i am still collecting parts for a big "production" machine.

[turmite]

Hey vacpress I was just wondering if you need a home? I have always wanted a son !! Now of course you would need to bring all your drawing tools with you cause I think I see some potential in you but it just needs to be developed....uh on my projects!

Great drawings btw. I am curious as to what the use for this machine would be? Sign painting or ????

Mike

[vacpress]

the use of this machine is to massively waste the time of its creator!

what else?

its also the first step towards a www.pixation.com type product. i am thinking about using oil pant with little hoops running into it, and air jets blowing it off. the fun part is going to be programming the color-mixng algorithms.

my drawing tools are nuthin-just pens, markers, and computers.

its my machine tools you want.. check my user gallery.