Joe's CNC 4x4 Hybrid

[spalm]

Hey Joe, looking good.

I really like the pipes on the top and bottom of the lower rails (your Y?) instead of the sides. It solves a few problems in my mind. I guess the bottom trucks are the adjustable ones? How are you attaching the bottom pipe?

I don’t see a leadscrew attached to your Z carriage. Where are you planning to attach to it (top, bottom, back)?
Edit: Now I see it. Ooops, nevermind.

I have been playing with a set of V-bearings for my 6 inch wide Z. I went with official rails. They are $1 an inch, but you only need two 1 foot (or so) sections, so the total price is not that bad. IMService cut them to length for no additional charge. I mounted them on wooden standoffs. The eccentrics only give you .048” of adjustment, so the rail standoff placement and parallel is critical. My first design had the motor riding up and down with the router, but I think I talked myself out of that.

I went with split rails on my Y to allow greater adjusting. This could also be used for your Z and then you would not have to buy the bushings.

Good Job,
Steve

[sdantonio]

Joe,

Very cool, can't wait to see what it will do when it is complete.

[BobLWeiss]

Nice design Joe!

Can I ask how you managed to connect the pipe/rails for the Y and X to the support pcs? It looks like you have some sort of plastic spacers between the two but how did you connect it?

Bob

[Smackre]

Looks great joe.

[joecnc2006]

Here is a picture of how the X and Y Rails are made, hope this helps, using 10-24 screws drill and tapped into pipe rails every 6".

and a shot from the side of the caraiage slide.

Yes the Y-Axis carriage has the tensioning bolts on the bottom, i figured that would be best.

Joe

[srstol]

I like it. How are your two y-axis lead screws syncronized?

Rob

[joecnc2006]

Originally Posted by srstol I like it. How are your two y-axis lead screws syncronized? Rob

Mach3 and timing belt

[ccsparky]

Here's my submission for the z-axis. All attempts for accuracy have been made, however I would highly suggest that all measurements be double checked.
The bolt head measurements are from some bolts that I have, however I found three different sizes so I went with the one I had the most of and that seemed to be the most common.
These ideas were what I was thinking of for a future mod to my existing machine or for a new machine. I drew these with the dimension as suggested by Joe.

Hopefully the drawings will provide some useful information.

Saved as version 2004
z_axis.dwg

Saved as version 2000
z_axis_2000.dwg

Bob

[joecnc2006]

Originally Posted by ccsparky Here's my submission for the z-axis. All attempts for accuracy have been made, however I would highly suggest that all measurements be double checked. The bolt head measurements are from some bolts that I have, however I found three different sizes so I went with the one I had the most of and that seemed to be the most common. These ideas were what I was thinking of for a future mod to my existing machine or for a new machine. I drew these with the dimension as suggested by Joe. Hopefully the drawings will provide some useful information. Saved as version 2004 Attachment 38301 Saved as version 2000 Attachment 38302 Bob

Looks good, now need to factor in leadscrew anti-backlash and motor mount ontop. as a complete Z-Axis assembly, but the concept is good.

Joe

[ccsparky]

Originally Posted by joe2000che Looks good, now need to factor in leadscrew anti-backlash and motor mount ontop. as a complete Z-Axis assembly, but the concept is good. Joe

Ok, that'll be next, got a little ahead of myself, always one more thing to do...

Joe, those rail mounts and the way you use them with the aluminum is really nice! Great idea!

Bob

[joecnc2006]

Here is a shot of showing the rear of the Gantry.


Joe

[mvaughn]

A bigger table, yet you'll be able to use smaller boxes when you ship the kits...

Seriously, superb work Joe!