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CNC Router Design

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Rob.Wilson:
Good to see you making a start Eric  :thumbup:

Looks a solid machine Art ,,,,,,,like the name  :lol: :lol:  , did you make the spindle ,is it a high speed one ?



Rob

Country Bubba:
Additional views

And the control panel was milled and engraved on this machine. Sure it was slow, but we got there :Doh:
The monitor is mounted on a "post" using a vesa type wall mount. The computer and control box are in the bottom of the cart the unit is mounted on. In the one picture, you see a MDF spoil board that was first used to try doing pcb's using double sided tape (messy)  :lol: :lol: So we got a piece of HDPE and made a vacuum chuck (The black piece). Just in front of the table on the left side if you can make it out is a hall effect switch that is used for Home/Limit switch.

Enjoy

Country Bubba:
Rob,
Thank you for the kind words. Means a lot to me after seeing the work you do (still would like to know about the nickle plating though:})

The spindle is one I got from Paul Jones at http://www.cnconabudget.com/ and is 3 speed (7500, 15000, 30000 rpm) it only uses a 1/8"shank tool held in by a grub screw. So far, it has worked quite well for me even though it is only rated at 70 watts which is fine for PCB work.

As for the name, I came up with that after numerous changes to the design over a period of about a year and several sleepless nights wondering IF it would work!  :smart:

Rob.Wilson:
Hi Art

Thanks for the link  :thumbup: looks just the job , I will need a high speed spindle when I get my mill finished .

I see you have used linner guides on your machine that must make it nice and smooth .

Vacuum table looks interesting  :med: , What sort of projects have you made on  it? 


Rob

Country Bubba:
Rob,
The intent of this project was to have a small tabletop that I could have in the house instead of trudging up to the shop. I wanted it for two main purposes:
1. Mill pcbs for various projects (want to get away from chemicals)
2. I use TurboCNC as my controller and have made several changes/additions over the years and wanted a machine that I could test stuff on quickly. Again it was so I would not have to trudge up to the shop for a 5 min test. A programmer I ain't and my compilations are by trial and error (mostly error).
As to projects done on this machine, as previously mentioned the milling and engraving of the control panel, the plastic mounts for the hall effect switches used for the home/limit switches, a couple of panels for the control box were milled and engraved, a couple of other projects done in brass cause I was to lazy to carry them up to the shop and do on the RF31 (they were small and consisted of outside profiles in 1/8"x 1 1/2" brass strip with some engraving), the led light bar mounted on the spindle was the first pcb that I attempted.

The linear guides are fantastic. Believe it or not the 30mm ones used on the X and Z axis were going to be thrown out by a friend! Got 4 Trucks and 5' of rail to recycle instead of being sent to the land fill! Originally was going to use a double rail Z axis, but then realized the rail was wider than the diameter of the spindle and it could never produce near the forces the system was rated at! So ended up with a much narrower Z axis and that extended the X travel by quite a bit.

The vacuum chuck works a treat, I have a 3cfm vacuum pump and it will hold 10"Hg on the board and you can hear the leakage. Oh and the chuck was done in-situ on the machine also.

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