Gantry style CNC mill

[A_Camera]

the machine:

Hi,

I am sure it's going to be a nice machine but based on my experience I'd suggest making some changes before it's too late.

My frame was originally similar to yours but I had to remove those wheels because of shaking caused by the G-forces. A fast machine with heavy gantry and Z movements will generate far too much shaking even if all the four wheels are locked. I changed my design, moved the wheels and the machine is now lowered to the floor on four wooden blocks, efficiently reducing vibrations and shaking. The wheels are still there but they don't touch the floor and gets lowered when the machine needs to be moved.

I assume your machine is going to be much faster than mine, considering you are using servos, so it would be a shame if you had to lower the speed and acceleration just to prevent the violent shake, so consider this before it is too late.

[giladv]

@A_Camera, you are absolutely right, also i wouldn't be able to level the machine with the wheels.
i thought about a hybrid solution of using 2 wheels at the back and 2 anti-vibration legs at the front for stability.
there will also be corner brackets all around.

could you share an image of your solution?

thanks!

[A_Camera]

@A_Camera, you are absolutely right, also i wouldn't be able to level the machine with the wheels.
i thought about a hybrid solution of using 2 wheels at the back and 2 anti-vibration legs at the front for stability.
there will also be corner brackets all around.

could you share an image of your solution?

thanks!

There is really nothing to show. The machine is resting on four wooden blocks and the wheel is suspended by about a millimetre or two. If I need to move the machine I lift one end, remove two of the blocks, lower on the wheels and do the same for the other two feet. This gives me enough clearance to move it around. I think four steady feet is better than two with wheels.

[routercnc]

Nice work so far. Can you show the detail behind the Z axis top covers. I'm guessing servo drive via belt to the top of the ATC spindle pulley?

Also, are the gantry ends just covers, or machined from solid (!)

I've looked at that skyfire spindle many times before and been very tempted. Let us know how you get on with it.

[Chaz]

Nice work so far. Can you show the detail behind the Z axis top covers. I'm guessing servo drive via belt to the top of the ATC spindle pulley?

Also, are the gantry ends just covers, or machined from solid (!)

I've looked at that skyfire spindle many times before and been very tempted. Let us know how you get on with it.

Ive also considered the skyfire spindle. I may pull the trigger on one and report back.

[Zeeflyboy]

looks brilliant!

[giladv]

hello everyone!

the gantry ends (and all other parts) are machined from solid 7075 T651 but those are covers as well.
i'm including some images without the covers for clarification


Updates
this week iv'e FINALLY got my UDOO x86 single board PC which will be paired with Dynamotion's Kflop motion controller to create what i hope
is the best hobby solution today for machine control. (more updates on this soon)


also, the work has begun on the machined parts(!!)