Or at least thats what Im calling it right now. First let me clearly define the scope of this machine, if I dont I will immediately get flamed I can see it now...
1. Quick easy build, that is some what modular and easily adaptable
2. "machinable" area at least 24x18 and at least 12" Z (maybe effective is a better word...)
3. Fast travel in X and Y
4. Built mostly from left over parts from old builds
5. The real goal of this machine to to test ideas. I already have a fully functional and very capable 2'x'4 fixed gantry machine to do my real work. I already know that there is flex in my design, and that there will be real limitations to the work this machine can do.
6. The work scope of this is to test the capability of diode laser heads, pen head designs, tangential knives, and Probing (probing is the reason for the 12" Z)
The general scope of the machine is to test alot of ideas (and boy is there alot of them) that I'm either nervous to test on the real machine (cant break the money maker) or would like to test from the comfort of my own desk, like probing.
Now that thats out of the way on to a bit of my design scope:
X axis- will be using .75" unsupported Thompson rail and Igus sleeve bearings. The drive system will be belt driven using 1/2" wide XL belts and pulleys.
Y axis- Will be using V-groove bearings from VXB.com and steel angle sat on the legs so that the angle is the rolling surface. Again be driven by XL belt and pulley
Z axis- Will be using .5" unsupported Thompson rail and Igus sleeve bearings. Drive system will be a 1/2-10 single start acme lead screw and anti-backlash nut from Dumpstercnc.com
The electronics for the drive systems come from kelinginc.com and probotix.com, Im using Probostep drivers and the 289 ozin motors, C-10 BOB, and 36V power supply from Keling.
The machine frame will be built from MDF with bolts and cross dowels for fasteners. The design will be done with a moving gantry and designed similar to the solsylva design. The idea here is to eliminate flex from gantry uprights and be able to make the effective height taller or shorter buy adding or removing support legs.
One of the main uses for this machine will be to digitize surfaces of objects I would like to machine that have irregular shapes, like a door panel on a car for instance.
Ive started working on drawings for the machine over the last couple nights. I will be posting as I getting things into a point where people other then me can understand them