Mini wannabe datron build

Mo pichurs... for your enjoyment (or hate, you do you...)

 
 
 

The atc mounting arms are just pure brute force right now. I need to refine them be a little lighter and a lot less expensive.

Fancy pants geneva mechanism finalised. steel pins for BCD encoding with induction sensors. fun fun! haha.
 
 

more fun
i think im almost ready to order the atc parts.

 
 
 
 
 

I ordered the first parts for the atc! The main pivoting hub, and some grippers. Basically the simplest and most complicated parts. I am using JLC to make the prototype so these will be my tests of the service to see what we get. Should be here end of next week. Exciting!

As I've refined this down it has basically become identical to the brother TC225 changer. It uses an identical BCD encoding system and 2 servos, one to pivot the magazine, and one to spin the platter geneva mechanism. I will have a custom pcb that has optical sensors and RC servo controller mcu that converts it all into 8x 24v IO (5 x bcd, and one fwd and reverse platter and one for the pivot). The linuxcnc side of things will reuse my brother tc225 osubs, with the addition of the pivot command. The pivoting will take 200ms, and the platter will take 400-500ms per station. So with clamping and z motion it should be about 1.5 seconds for the next tool, and 3.5 seconds for the farthest tool for a tool change. Plus 12 seconds on my spindle to start and stop form 40000rpm. I need to see if I can adjust that and use modbus to "know" when the spindle is stopped or at speed to adapt the dwell. Cause at lower speeds like 18k or 24k it should only take 2-3 seconds to start or stop.

Great job! What CAD program do you use for drawing? It looks very real.

I am just using fusion for this.

ATC design is final. Also did up a quick 4th axis rotary table using a surplus harmonic. The body is a steel block, faceplate is steel. printed nylon dust seal, and then an 60mm motor shaft coupling. It takes a  52mm round quick change plate for vises. Just enough centre height to spin the small xindian h67 vise with a 4" long work piece. Total cost with the harmonic drive, 200w ethercat servo, machined parts from JLC is in the $800usd mark. Not bad!   There are a small amount of these surplus harmonics, so if someone wants to build their own high quality rotary, I can give you the files. (I cant post publicly on here though). Note that the precision of the housing block is probably not going to be perfect, and you may way to scrape in the bottom to be dead square square.

Fleshing out the rest of the bits.
Found a nicer cheap 21" touch panel on waveshare, seems like it would work well as a vertical panel with qtdragon

sooo pretty.
 

haha