Do it yourself - CNC milling machine

Hello,
This is the project diary of my milling machine.
Because I'm a poor student, the project takes a while till it is completed. :-( Sponsors are welcome *g*

Material and tools
Plans
Links

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Friday, 29. Septembre 2006 - Building the servo mountings

Hi,

Today I milled 5 plates. This are the ground plates for the y and Z mountings.

Matthias milled my Drafts. Thank you very much.

Also my tooth belt wheels he lathed so that the brace parts are matching.

I drilled holes and threads into the faces auf the plates.
Result:

Here I mounted them.

And here they are mounted on my portal. The tooth belt wheels are mounted, too.

The Z mounting with motor.

Side view at the portal into the Y profile with the breakthrough. The belt is not spanned yet.

And the actual stand:

Greets,
Robert

Monday, 05. March 2007 - New beginning of the electronic

Hi all,
Not much happened in the past, but anyway, here are some news.
Firstly, I dismounted my computer-case a bit. It's better for working on it.
The first UHU on his place:

Here I dismounted some old CD-ROM drives for placing the UHU's on it.

I placed the interface in an old CF-Card Reader.
The 12V power supply fits in the 3,5" shaft.
in my old power supply case in the back of the case will be placed some elements for 230V sharing and a starting current limitation.

I began with the back side of my case.

These are the connectors for my Servo motors, the emergency shutdown and so on.
Labels are still missing.

Greets,
Robert

Thursday, 08. March 2007 - New beginning of the electronic (improvements)

I decided to replan my case.
the external power supply will be removed. Now i will place the power supply in the same case of my UHU's to make the energy cables as short as possible.
So I riveted an other old PC case on my case. Looks a bit ugly, but for what I am a casemodder ;)

testwise placed parts:

This are the ways of the Servo voltage cables. short but thick cables.
The Servo connectors aren't anymore ath the back of the case. They will be placed at the Side.

Now the start current limiting pcb has arrived. Thank you Werner !
Not yet tested, but Werner hast tested it with a capacity up to 72.000 湩 and a charge of 1000 VA.

Front:

Back:

And that is the inside of my 230V case.

Greetings,
Robert

Monday, 26. March 2007 - control panel

Today I did some handicrafts again :)
First I gave my UHU's some new connectors for the motor voltage. it's really better than the old ones.

The 12 volts divider board was made a bit smaller.
Now I can handle it better than with my banana plugs.

Then I ordered a wrong relais. Okay, I simply made a small board as adapter *g*.
The relais was ok, but the frame size not.

Here I placed a small heat sink and a fan on the resistor that is for discharging my capacitor board.
Now there are only about 40 degrees Celsius on it.

Today my front panels came :) I mounted them:

Some details:

After I fixed some further electronic failures and everything was mounted on my front panel, I could switch on the power of the device for testing.
All three UHU's are starting and loggin in my PC :) The Servo voltage is there and the temperatures are in a green area.
*yehaaw*

In the next days I will get some aluminium plates for the case. I will screw them simply on it.
So thats it for today.
Feel free to use the guestbook for comments :)
to be continued...
Robert

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