[drRobutik]

Here we go again for a new adventure. This time I start to buid a much stronger CNC, the last time was with MDF which was not so buffy.For the frame I used 40x60 mm iron profile and welded. I decided to use linear rail guide and ball screw for better precision, after reading several thread at cnczone I decided some cold rolled iron . First the rolled iron bares are welded on the frame. AFter a professional CNC made the grinding and hole drilling for the guideway.My CNC will have a footprint of 1200x900 mm.

Cheers

CNC Specs:
- 1200x900 mm footprint
- 900x600 working area
- 3 AC Servo Motor and Driver
- 2 Precision ball screw for x axis
- expected fast speed to be 10000 mm/min
- Aluminum T slot table top
- Belt driven 3 axis
- Homemade CNC control software
- And some aesthetic view of the CNC

[CarveOne]

Here we go again for a new adventure. This time I start to buid a much stronger CNC, the last time was with MDF which was not so buffy.For the frame I used 40x60 mm iron profile and welded. I decided to use linear rail guide and ball screw for better precision, after reading several thread at cnczone I decided some cold rolled iron . First the rolled iron bares are welded on the frame. AFter a professional CNC made the grinding and hole drilling for the guideway.My CNC will have a footprint of 1200x900 mm.
Cheers

It's good to see another steel CNC build. I'm kinda partial to it myself.

CarveOne

[drRobutik]

Today I started to tape the guideway hole with M4. I wonder are they any other low cost methodes othen than grinding and paralleling on a CNC.?

[Mountaincraft]

Today I started to tape the guideway hole with M4. I wonder are they any other low cost methodes othen than grinding and paralleling on a CNC.?

If you can afford to have your rails surfaced with a CNC.. that's definitely the way to go... That's 'gotta' improve performance of the finished machine... How can it not?

[drRobutik]

Thanks,
I finished taping (by hand). I 'll buy the linear gideways today. After that I' ll start contructing the x axis support, which will be L type steel that I ll use a mill to surface and drill holes. by the way I have to go to build this CNC

[drRobutik]

Just fixed the linear guides and the cars. And started to machine L steel x axis supports.

[magma-joe]

drRobutik,

Nice build you have started. The steel should make it very rigid. Did you mill the cold rolled and then precision grind the surface? The quote I got for precision grinding a frame like yours was $622.00 US. Very costly but I would think it is the only way to perfectly line up the linear guide? I will be following your build.

Magma-joe

[drRobutik]

Yes I did the surface grinding and hole drilling on CNC which cost me about 320 USD in Turkey quite expensive here too, but all holes are precise. The rail was screw without problem though. I did make channels for rail in order to fit them correctly. Everythings seems ok till now.
Tomorrow the grantry will be machined on CNC . I am impatient to see the results.

[drRobutik]

The gantry of the CNC is from 20 mm tickness aluminum. Which I draw on Solidworks. These parts contains lot of holes and pockets. After hours of verifications. The G-code is produced. I used sprutcam for the CAM process, that I think is a very good CAM software. You may see on the images of the machining stages of the right and left gantry as well as one piece of the Z axis. all the process took about 6 hours. But the job is not done yet, the pieces should be separated by using a bandsaw. Hopefully I have a friend of mine who owns a big bandsaw.

to be continued ...

[drRobutik]

I was so busy to build my CNC that I forget to write some developement.
So I mostly finished the gantry and the z axis.

[giz]

what is the wall thickness on your steel tubing?

[louieatienza]

Nice work so far! Gantry uprights look real beefy!

[drRobutik]

hi,
The wall thickness of the steel tubing is 4 mm.