CNC router build

   

CNC Mill Release status: experimental [box doku]
Description
Author(s)	Tarwin
Last Version	v0.1

We want to use the big-ass CNC portal Thomas rescued from the trash to build a CNC router.

Goals

• Mill Aluminium!
• route PCBs
• be open for extensions, easy tool change

Hardware

Motor System

X & Y Motors

• Berger-Lahr VRDM3913 50LNBOO

Z Motor

• Berger-Lahr VRDM368 50LNBOB

Motor controllers

• 3x JMC 3M860

Power supplies

• 3x 70V 400W from China

Endstops

X & Y

• ??
• Seems to be an Solid-state Auto Switch, not just a Reed sensor, maybe same pinout as the SMC

Z

• SMC D-F9H (datasheet) (Solid-state Auto Switch, works like a PNP transistor)
• Omron EE-SX870p Photomicrosensor (datasheet)

Software

CNC_router_software_eval

Sub-projects

Fix up portal

• The portal needs to put together and fixed up
  • Put portal together, replace belt
  • identifiy / Test endstops
  • Build portal frame
  • Try Z axis brake

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
• Maybe use old routing table placed inside the frame to have a stable and level working surface
  • Build / reuse old routing table (should be movable by itself, maybe use old manual router)

Tool head

• needs to be powerful (Aluminium) and precise (pcbs)
  • Find matching Spindle with driver and cooling
  • Bought this: 2.2kw wassergekühlte Frässpindel

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

Pictures

Last picture of the portal before it ware put apart and brought to the space