CNC build
The idea is to build a large CNC machine from mostly using things you find in a typical hardware store.
Original idea
- Threaded rods and nuts for driving
- Using plywood because it is easy to work with.
- Rails from aluminum angle
- Driving it with arduino
TODO
- Belt drive would be better for a large machine like that. Check out prices and how it affects presicion. If we continue to use threaded rods, we need stronger ones (New bearings other parts are needed too). Looking into prices and order parts.
- Build a new supporting structure
- Connecting motors to drivers needs proper connectors. What kind would be best?
Photos
All photos https://ipfs.io/ipfs/QmY3AjFxtYKWYjVaGSTjHeL1EAej5zLZuoS6SjeU2suz74
Design
Resources
Shop
https://www.cnc-store.eu/en/
Part list
Arduino CNC Shield V3.00
https://blog.protoneer.co.nz/arduino-cnc-shield/
Amazon search https://www.amazon.de/s?k=Youmile+CNC+Shield+V3.0-Erweiterungskarte+%2B+Arduino+UNO+R3-Karte+%2B+DRV8255-Schrittmotortreiber&ref=nb_sb_noss
Guide: https://blog.protoneer.co.nz/arduino-cnc-shield-v3-00-assembly-guide/#4THAXIS
https://www.zyltech.com/arduino-cnc-shield-instructions/
Drivers
DRV8825
https://www.amazon.de/gp/product/B073VK4YN7/ref=ppx_yo_dt_b_asin_image_o03_s01?ie=UTF8&psc=1
UEETEK 5 x DRV8825 Stepper Motor Driver Module 4-Layer with Mini Heat Sink For 3D Printer
The driver https://www.pololu.com/product/2133
Motors
23HS2430
http://www.datasheetcafe.com/23hs2430-pdf-datasheet-28557/
Old Notes
https://diymachining.com/grbl-feed-rate/
https://en.wikipedia.org/wiki/G-code
https://www.pololu.com/product/2133
Using “Clone X-Axist to the 4th stepper” jumber configuration
No microstepping jumpers added (the ones under the drivers). Using full steps.
End stop jumper doesn’t exist in this version
Connect to arduino with serial terminal
$$ for list
$0=10 (step pulse, usec)
$1=25 (step idle delay, msec)
$2=0 (step port invert mask:00000000)
$3=0 (dir port invert mask:00000000)
$4=0 (step enable invert, bool)
$5=0 (limit pins invert, bool)
$6=0 (probe pin invert, bool)
$10=3 (status report mask:00000011)
$11=0.010 (junction deviation, mm)
$12=0.002 (arc tolerance, mm)
$13=0 (report inches, bool)
$20=0 (soft limits, bool)
$21=0 (hard limits, bool)
$22=0 (homing cycle, bool)
$23=0 (homing dir invert mask:00000000)
$24=25.000 (homing feed, mm/min)
$25=500.000 (homing seek, mm/min)
$26=250 (homing debounce, msec)
$27=1.000 (homing pull-off, mm)
$100=200.000 (x, step/mm)
$101=250.000 (y, step/mm)
$102=250.000 (z, step/mm)
$110=120.000 (x max rate, mm/min)
$111=500.000 (y max rate, mm/min)
$112=500.000 (z max rate, mm/min)
$120=60.000 (x accel, mm/sec^2)
$121=10.000 (y accel, mm/sec^2)
$122=10.000 (z accel, mm/sec^2)
$130=200.000 (x max travel, mm)
$131=200.000 (y max travel, mm)
$132=200.000 (z max travel, mm)
G21 : millimeters
$100=200
$110=120
G00 X1
G00 X10
Progress
Rebuild 2024
new base
Putting it together
Building rails
https://ipfs.io/ipfs/QmQiiXmcppkZbiBLBqpeB9PksBaoErcm52GkbSRZxGVpDi?filename=VID_20200706_172613.mp4
First drawing
https://ipfs.io/ipfs/QmXixdowuzNy7f6NH2Pto9GHmj5UZyoiANJx8qEvcNDAsX?filename=KotoCNC-lq.mp4