pick and place machine to mount components on a PCB using an arduino

I have started to make a Pick and Place machine that will be able to do SMD mounting of electronic parts.

It will also be able to do 3D printing.

At the moment this is just a memory dump so that i can keep all information in one place. Over time i will add bits and pieces to make the thing complete.

First the list of sources for all the mechanical parts.
M3 x 70 bolt 12.35Euro for 16 needed for Nema17 motor mount for X axis.
http://www.metaalreus.nl/product_info.php?products_id=24418&osCsid=4e3dd27bfc4d8477528acebff53f433a

Clamp on shaft couplers: You need one to couple the suction head to the rotation motor.

The NEMA17 has a 5mm motor shaft and I used 3/8th the other to fit to the vacuum pipe. (see drawing later on)

One more for spindle to motor. 5mm motor and the spindle I got was 3/8th a so called 10 turn 2 start one (partnr ACME 3/8-10 (2 Start))

I added a .860″ (21.8mm) machined cutdown flange with (2) .173″ (4.4mm) dia holes. This is a anti backlash nut to prevent play when moving the pick and place head back and forward. US$17.50 plus US$2.00 for the flange. The clamp on shaft couplings cost US$13.75 or US$14.75 depending on size.
All these I got from http://www.dumpstercnc.com/
As an alternative you can use
http://buildyourcnc.com/CNCMachineMechanicalParts.aspx

Nema17 stepper motor i got from ebay at US$6.89 which is OK but shipping is expensive so watch out. http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=180764835312
I also got the stepper driver boards from ebay. At US$11.00 including a small heatsink is good price shipping is only US$2.00
http://www.ebay.com/itm/ws/eBayISAPI.dll?ViewItem&item=270824453170
For fixing some of the wood i used cross dowels which i bought locally but you can get eg here
http://www.woodcraft.com/Product/2001045/860/Cross-Dowels.aspx
The bearings for guiding the timing belts you can get here. Originally i wanted to use 6mm diameter
Ones as below but finally ended up with 4mm ones using 3 together.
http://www.paoparts.com/fr/roulement-a-billes/66-624zz.html

I used V groove bearings bought locally. They are ones used for pulley guidance.
Mine were about 4.50Euro each. These ride on the rails. They have 6mm shaft.
http://buildyourcnc.com/bearingsproducts.aspx
You can buy for double the price above. http://buildyourcnc.com/Documents/r2zzbybuildyourcnc.pdf