WorkBee

From CoMakingSpace Wiki

Revision as of 23:38, 28 August 2024 by Leo (talk | contribs) (Updating for post-rebuild processes)

WorkBee

MachineInfoBox

Ooznest WorkBee CNC

Ooznest WorkBee CNC.JPG
Synonyms: DE: CNC-Fräse, CNC-Plattenfräse, Portalfräsmaschine
Type: CNC Router
Material: wood
Used with: 6 mm, 8 mm, 1/4" or 1/8" end mills;
some kinds of router bits
Location: CNC Area
Access Requirements: CNC Router Introduction
Status: Broken
Firmware: grbl
Software: LaserWeb, Fusion360, see G-Code Sender
Manual: product page, click "documentation" tab
Tutors: NitramLegov
Johannes
Similar (More or Less): router, CNC mill



Currently defective due to a buggy/broken controller board! See Issue #307

We have a 1500mm x 1500mm version of the WorkBee CNC router, which is based on the Openbuilds OX. It can currently cut sheet material of up to 50 mm thickness on a work area of approximately 1250 × 1250 mm. The surfaced (plangefräste) spoilboard area is 1260 × 1160 (x × y) mm.

Our plans for further improving it up can be found in our "WorkBee CNC" github project - maybe you would like to help.

Fusion 360 Setup

To use the router in Fusion 360, make sure you add the latest machine definition and post-processor to Fusion 360.

You can find the newest version of these required files here. Feel free to submit improvements.

Router

The router mounted to it is a Dewalt D26200 (GB; known outside Europe as DWP611). You need to consider the sizes of its collets (Spannzangen) when buying your router bits.

  • no-load speed: 16000 - 27000 rpm
  • max cutter diameter: 30 mm
  • available collet diameters:
    • 8 mm
    • 6 mm
    • 1/4 inch (6.35 mm)
    • 1/8 inch (3.175 mm)

The collets of the DW613, DW620 and DW621 also fit the router and are easier to get in Germany than the original ones.

RPM Chart
Dial Setting Approx. RPM
1 16000
2 18200
3 20400
4 22600
5 24800
6 27000

Spoilboard

Ooznest recommends a 6mm spoiler board, our first one is 20mm thick. It is mounted to the frame using 4 drop-in T-slot nuts. Cutting into the boards will make it uneven, from time to time it is neccessary to surface the spoiler board again.

The total size of the spoilboard is currently 1445 × 1370 mm.

When there is time, we would like to drill workholding holes into the spoilboard.

Electrics

The Machine received a full electrical overhaul in the first half of 2024, here are its current electrical specifications:

  • Duet 3 6HC+ Mainboard running RepRapFirmware
  • Web- and touch interface
  • MT-2303HS280AW 2.8A NEMA23 Stepper Motors
  • Dewalt D26200 Router

Dust Extraction

The Workbee Vacuum automatically turns on with the spindle. We have added a cyclone dust separator before the shop vac so the bulk of the chips should be collected in an easily emptied box rather than the shop vac's bag.

The part that attaches the dust extraction hose to the router is called a "dust shoe". We are currently using this one designed by Patrick. The next version should ideally fit the dust extraction hose without an adapter and include a kind of transparent, flexible "skirt" to optimize the airflow.

Other interesting designs:

Workflow

This is just an overview and does NOT replace the personal introduction!

  1. create the tool paths in a suitable CAM software (e.g. Fusion 360)
  2. secure your workpiece on the machine's bed
  3. insert the appropriate collet & bit as defined in your tool paths
  4. home the machine, jog to your workpiece origin and zero your work coordinates
  5. Upload your generated G-Code
  6. put on personal protection
  7. Run your Program
  8. Once the Machine has homed, turn on the spindle & vac on the control panel (only works after homing)
  9. Be ready to hit the Emergency Stop in case SHTF. Your Program is running!