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|3rd September 2011, 03:18 PM||#1|
Join Date: Mar 2003
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
Spindle Holder design:
Spindle: Dremel 300
Building the base...
Installing the linear guides for the Y-axis...
X and Z axis linear guides...
Zero backlash stepper motor couplings...
NEMA 23 stepper motor mounts...
Laser cut engineering plastic spacers...
Assorted limit switches...
X and Y axis mounted with the spacers...
Making sure the Z-axis is perfectly squared with the X-axis...
3-Axis micro-stepping stepper motor drivers...
The photo-isolated parallel port breakout board...
one of three NEMA 23 sized stepper motors from Pacific Scientific...
pimped and modified pc psu for 12V and 5V supply source...
Ball bearings to prevent leadscrew end-play...
Installing the stepper motors and lead screws...
Laser cut spindle mounts...
Installed the roller bearings with a piece of aluminum as diy bushings...
Installing the limit switches...
And my son inspecting the outcome of the project... ;D
|3rd September 2011, 03:18 PM||#2|
Join Date: Mar 2003
Motor wiring harness...
Holder for the connectors...
Got some endmills and drill bits from eBay...
Also installed some high-bright LEDs attached on the spindle mounts to illuminate the work piece...
PCB holders and retainers from scrap aluminum...
And time for some PCB Milling!!!
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
|12th September 2011, 05:31 PM||#5|
Join Date: Aug 2011
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.
Noli timere problematum affigit
|12th September 2011, 09:47 PM||#8|
expert in tautology
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??
http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- [...2SJ74 Toshiba bogus asian parts - beware! ]
|12th September 2011, 09:54 PM||#9|
Join Date: Sep 2004
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
It's not about what you can BUY...It's about what you can BUILD!
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