Abacus Robot: My diy CNC PCB Milling/Drilling Project - diyAudio
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Old 3rd September 2011, 04:18 PM   #1
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Default Abacus Robot: My diy CNC PCB Milling/Drilling Project

Platform: Ubuntu 10.04
CNC Software: EMC2 PCB CNC software
PCB CAD: Eagle PCB CAD
Gcode Translator/Generator: PCB Gcode


Construction Pics...


Spindle Holder design:

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Spindle: Dremel 300

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Building the base...

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Installing the linear guides for the Y-axis...

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X and Z axis linear guides...

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Zero backlash stepper motor couplings...

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NEMA 23 stepper motor mounts...

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Laser cut engineering plastic spacers...

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Assorted limit switches...

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X and Y axis mounted with the spacers...

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Making sure the Z-axis is perfectly squared with the X-axis...

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3-Axis micro-stepping stepper motor drivers...

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The photo-isolated parallel port breakout board...

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one of three NEMA 23 sized stepper motors from Pacific Scientific...

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pimped and modified pc psu for 12V and 5V supply source...

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Ball bearings to prevent leadscrew end-play...

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Installing the stepper motors and lead screws...

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Laser cut spindle mounts...

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Installed the roller bearings with a piece of aluminum as diy bushings...

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Installing the limit switches...

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Almost there!!!

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And my son inspecting the outcome of the project... ;D

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Old 3rd September 2011, 04:18 PM   #2
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Motor wiring harness...

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Holder for the connectors...

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Got some endmills and drill bits from eBay...

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Also installed some high-bright LEDs attached on the spindle mounts to illuminate the work piece...

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PCB holders and retainers from scrap aluminum...

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And time for some PCB Milling!!!

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Here are some videos, forgive the blurry quality and poor lighting though...

Stepper Motor pre-test: http://www.youtube.com/watch?v=RTJ032-n_U0

Pen Pre-Testing: http://www.youtube.com/watch?v=X8In1...eature=related

Milling video 1: http://www.youtube.com/watch?v=y9kv77lQx7U

Milling video 2: http://www.youtube.com/watch?v=IdoufqYjh_E



Cheers!
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Old 7th September 2011, 03:56 AM   #3
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Does the job real well...

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Old 7th September 2011, 04:19 AM   #4
qguy is offline qguy  Canada
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AWESOME !!!
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Old 12th September 2011, 06:31 PM   #5
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Very nice work. Watch the duty cycle on that dremel. I've toasted one before from over temp. Maybe add an overtemp system shutdown sensor touching the dremel case? LM 61's are cheap.
Just a thought.
Doc
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Old 12th September 2011, 07:04 PM   #6
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Very nice !
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Old 12th September 2011, 07:17 PM   #7
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Where did you get those nice rails, I heard McMaster doesn't realy do international shipping anymore.
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Old 12th September 2011, 10:47 PM   #8
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Sweet!

Two things...

Lucite sheet/ acrylic sheet is not dead flat and varies in thickness... fyi.
May not be significant.

It is a good idea to install a collar thingie near the cutter end of the dremel that is hooked to ur vacuum cleaner to get the dust out of the air and away from the work... there are a few different ways to implement it...

Nice job... whose controller did you use??

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Old 12th September 2011, 10:54 PM   #9
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Nice job, I have a converted Shibaura Roibot industrial X-Y arm converted that I am alsmot finished with.

Here are some videos of my machine in action running some test programs

overkillaudioinc's Channel - YouTube
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Old 13th September 2011, 02:56 AM   #10
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Quote:
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AWESOME !!!
Thanks man!
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