I have a 3axis Ahha system with #34 1535 oz/in stepper motors.
Right now the system is installed on my knee mill.
I have need to change it out, and I was thinking about building a router around the steppers.
I want as much precision/repeatability as I can resonably get.
So far I have a machine designed, but I wanted to put this out and get a reality check. Plus I have a few questions.
The design,
4'x4'x12"(12" for a 4th axis, thicker materials, etc) Gantry style. (I have limited space.)
The frame; aluminum tube 4x4 w/.5" walls. I will use tooling plate for mounts and etc.
For guides, Misumi linear rails. Sizes ? (Do I need to mill the surface the rails will be attached to?)
To drive the bridge, twin preloaded .75 or 1" acme screws, chain sync.
For the carriage the same size screws.
To move the spindle 3/4 or .5" screw.
I'm not sure what to use for a spindle(I'm leaning tward Porter Cable).
What is the best way(s) to connect the stepper motors to the screws?
I want to add a vacuum hold down system. What is the best way to do this?
Any sources fot t-slots out there?
I want to work aluminum, is building a machine structure out of aluminum a good idea?
Any input would be greatly appreciated.
Thanks