OX 1500x1500 Dual Drive

Ox inspired 1500 x 1500 CNC with belt and pinion drive and lead screw drive options.

Goals for this build:

1. Increase gantry rigidity.
   
2. Use my existing timing belt drive.
3. Allow for Acme Lead screw upgrade.

So let's get started...

Goal 1: Increase gantry rigidity.
After trying the dual 20x60 gantry like the OX, I was still not happy with how much flex I was getting. This was most noticeable when plunging and drilling. So I have added 3 things to improve this.

1. Quad 20x60 extrusions.
   
2. Face bolting the extrusions together. (Tig welding would be better)
3. Increased side plates to 8 inches (200mm)

Goal 2: Use my existing timing belt drive
I already build a 1500x1500 CNC using the belt and pinion system, so I would like to test Goal 1 without needing to purchase all new motors and lead screws. Therefore I added motor mounts for NEMA 17 and NEMA 23 belt and pinion.



Goal 3: Allow for Acme Lead Screw upgrade
To further increase performance and accuracy I plan to upgrade both X and Y to 1/2 inch ACME Lead screws. Here are a few links for what you need:

Acme Screw (3x)

http://www.amazon.com/2-10-Foot-Acme-Threaded-Rod/dp/B00ISV5W74/ref=sr_1_1?ie=UTF8&qid=1416241504&sr=8-1&keywords=acme rod 1/2

NEMA 23 Coupling (3x)

http://www.ebay.com/itm/CNC-1-4-Mot...EW-Flexible-Coupler-1-2-to-1-4-/281477314755?

Bearings (6x - the link is for qty 10)

http://www.amazon.com/Shielded-Bearing-R8ZZ-inch-Bearings/dp/B002BBGXZM/ref=sr_1_2?s=industrial&ie=UTF8&qid=1416241655&sr=1-2&keywords=bearing 1/2

Anti-Backlash Nut (3x)

http://www.ebay.com/itm/Brass-anti-...454?pt=LH_DefaultDomain_0&hash=item27cd5e4f16