CNC router build
Release status: experimental [box doku]
We want to use the big-ass CNC portal Thomas rescued from the trash to build a CNC router.
- 1 Goals
- 2 Hardware
- 2.1 Motor System
- 2.2 Motor cabeling
- 2.3 Endstops
- 2.4 Handwheel
- 2.5 Controller
- 2.6 Spindle
- 2.7 Software
- 2.8 Sub-projects
- 2.9 Pictures
- Mill Aluminium!
- route PCBs
- be open for extensions, easy tool change
X & Y Motors
- Berger-Lahr VRDM368 50LNBOB
- brake needs 24V to loosen, works.
- 3x 70V 400W from China
- 1 = U
- 2 = V
- 3 = W
- 4 = NC
- 5 = break brown cable
- 6 = break white cable
- 1 = U
- 2 = V
- 3 = W
- 4 = NC
- 5 = NC
- 6 = NC
X & Y
- Type unknown
- Seems to be an Solid-state Auto Switch, not just a Reed sensor, same pinout as the SMC
- SMC D-F9H (datasheet) (Solid-state Auto Switch, works like a PNP transistor)
- Omron EE-SX870p Photomicrosensor (datasheet)
- all endstops can be driven with 5 to 24V.
- Pinout is: brown: VCC / blue: GND / black: Signal
- Pinout on X: brown: VCC / green: GND / white: Signal
- all have a red led which goes out if they sense something
- Some input here
Endstop RJ45 connector
- - Signal Z-
- - Signal Z+
- - VCC (5-24V)
- - Signal Y-
- - GND
- - Signal Y+
- - Signal X+
- - Signal X-
Bought from AliExpress, [page]
1 GND 2 +5V 3 A+ 4 B+ 5 A- 6 B- 7 Emergency Stop (pin 1) 8 Emergency Stop (pin 2) 9 LED+ 10 LED- 11 COM 12 X 13 Y 14 Z 15 4 16 x1 17 x10 18 x100
The wheel needs a +5V power supply, and outputs a slightly lower voltage on A+/B+/A-/B-. One step of the wheel goes through a full cycle. This is not a regular switch, so no connection can be measured.
This is a standart Mushroom Knot
Inside are 2 simple normally closed switch.
one is connected to the control unit to stop the program
the second one is connected with the power switch so if pressed the Power for motors and spindle will be switched off ( power for the control unit stay on)
A red LED, 20mA standard current drive.
These switches are connected through the "Enable" button on the left. No signal is received unless the button is pressed.
The X, Y, Z and 4 pins are connected to COM when the respective axis is selected, and the enable switch pressed.
The x1, x10 and x100 pins are connected to COM when the respective speed is selected, and the enable switch pressed.
Connection to Linux CNC
Manuals for CNC Controller:
- File:CNC Controller.pdf Handsteuerung
- File:CNC Controller use in Mach3 Mill and Pin-Out.pdf Description of Pins of the controller board and how to operate it within Mach3 Mill
- File:Controller Board Relay Output Wiring.pdf Information for connecting the spindle to a relay and the controller
- File:Wiring for Endstops and Emergency Stop.pdf How to wire the endstops and the emergency stop
- File:PCI-Parallel-setting.pdf windows settings for using the parallel port
Connector Pins = Cable
1 = 1 2 = 2 3 = 3 4 = PE
Cable = controller side
Cable 1 = U Cable 2 = V Cable 3 = W PE Cable = E
Fix up portal
- The portal needs to put together and fixed up
- Put portal together, replace belt - done
- identifiy / Test endstops - done
- Build portal frame - in progress (Thomas E)
- Try Z axis brake - done
Frame and table
- The X Axis is raised, the linear bearing runs far above the tool head. This implies a high center of gravity.
- Frame needs to be very stable
- Old workbench?
- needs to be powerful (Aluminium) and precise (pcbs)
- Find matching Spindle with driver and cooling - done
- Bought this: 2.2kw wassergekühlte Frässpindel
- This can be controlled manually on the inverter or over serial.
- needs its own fuse and a fault current fuse (FI Schutzschalter)
- Technical data:
- 2.2kW / 8,000 - 24,000 RPM
- ER20 spring collets (Spannbuchsen)
- Driver: HY02D223B
- Manual of the driver
- water cooled
Software & Controller
- What will tell the drivers what to do? PC/parallel port, Mikrokontroller, old CNC hardware, ...
- Hardware? What do we need?
- Main page for this: CNC_router_software_eval
Last picture of the portal before it ware put apart and brought to the space