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Topic: First test of CNC Miller conversion (Read 7704 times) previous topic - next topic

Anachrocomputer

Good stuff!  The Bristol Model Engineers Show is coming up, and of course there will be lots of people there selling mills of all sorts. Maybe I should go for one, at least for the PCB milling idea.

Grumpy_Mike

Now with an added video of the miller doing it's stuff:-

http://www.vimeo.com/14112968

Funky Diver

That's pretty cool Mike, top banana :D

raron

Very nice! And cool. Now all you need is an automated brusher-away'er  :P Or a vacuum cleaner mounted on it maybe.

wiz

Where did the cutter used to mill the pcb come from?


thegeekway

How much are you charging for a small pcb ;)

holyjewsus

#22
Sep 27, 2010, 01:07 am Last Edit: Sep 27, 2010, 04:57 am by holyjewsus Reason: 1
Grumpy Mike, thanks a lot for your help in my other thread about noise, I'm extremely interested in your moves from the rep rap code to your arduino mill, I'm going to be building a simple router using easy drivers?  Are these compatible with the code for cool drivers you used (step and dir pins?)

also, how were you planning on implementing limit switches, connected directly into the arduino?

george_graves

#23
Sep 28, 2010, 12:51 am Last Edit: Sep 28, 2010, 12:52 am by george_graves Reason: 1
Man!  That's awesome.  I really would like to convert a mill like this.

Before you go gun-ho on milling FR4, you really should look into the health problems of breathing in fiberglass.  I know you'll say that you were no where near it, or you clean up afterwards - but I don't think that it cuts it (no pun intended) it stays in the air.

Grumpy_Mike

Yes I am not planning to use FR4 at the moment due to the extra wear it puts on the tools. All the stuff so far has been SRBP. I will use a vacuum cleaner close by the miller if I plan on using fibre glass board.
Thanks

Development on the miller has temporally stopped because I am now on with the project that I built the miller for. When that is done I will finish off the design and put it on line.

Quote
Are these compatible with the code for cool drivers you used (step and dir pins?)

Yes most stepping motor controllers have step and direction pins.

Quote
how were you planning on implementing limit switches

Limit switches and motor control are on a MSP23S17 port expander.

liudr

Grumpy_Mike,

Seems like your setup may be able to cut holes on plastic project boxes, like LCD windows and button holes and connector holes with a router bit. Have you got any plan for that?

Grumpy_Mike

#26
Sep 30, 2010, 04:44 pm Last Edit: Sep 30, 2010, 04:48 pm by Grumpy_Mike Reason: 1
Yes I am part way through writing a Processing app that will generate Gcode files of holes of various sizes and shapes. I used it to cut some hexagonal inlays in some MDF so nuts could be recessed into a block of MDF that was then bolted to the work area. This allowed me to mill an area flat so I could compensate for a slight tilt in the axis that resulted in a 1mm difference in height between each ends of the X axis.
The program generates round, hex, square, oblong, D shaped and notch shaped holes. This is a screen dump of the D-Shaped holes showing the tool diameter.



There are also some applications that design front panels and produce DXF files, so I am writing a DXF reader and translator into Gcode. I wouldn't have to do this if I could get some of the free Gcode generators working but all the ones I have tried don't work on my mac. I am also too mean to pay money for one especially the silly money some people ask for them. When they are finished I will put them all on line.

holyjewsus

grumpy mike is very helpful, and his router is ballin.

HB 8700

Very nice!!

is there any chance that we could get some pictures of the rig and maybe even the mounts you made for the motors

i've been thinking about buying and modding one of those ever since i saw it in the proxxon catalog


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