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We currently have a under construction C BEAM based CNC Mill. The mill took its first cut on 20/02/2016.  
We currently have a under construction C BEAM based CNC Mill. The mill took its first cut on 20/02/2016.  


The CNC Mill is based on the C BEAM profile from open builds, it is currently a X/Y table type "C BEAM MACHINE" but we have all the parts to make it a 1000x750mm gantry style.
The CNC Mill is based on the C BEAM profile from open builds, it is currently a X/Y table type "C BEAM MACHINE" thats 400x400x120mm but we have all the parts to make it a 1000x750mm gantry style ASAP.
 
==Specifications==
*800W water cooled spindle 220V 6.5A ER11 collets
*1.5kw VFD capable of 3000-23000 rpm
*3.2Mn NEMA 23 steppers
*20V 4 A power supply
*2.5A Stepper drivers
*Control via GRBL running on a arduino CNC sheild
*Raspberry PI  serial to JSON server making the CNC shield available on chillipeppr
*400x400x120mm workspace
 
==Configuration==
Send the command $$ to GRBL to read the current configuration
*steps/mm (all axis) = 100
*Accel X
*Accel Y
*Accel Z
*Max Rate X
*Max Rate Y
*Max Rate Z


==Pledges==
==Pledges==
A pledge tracker can be found on this google sheet [https://docs.google.com/spreadsheets/d/1YoNpKDSHYxvh8rIthMvfQn_k2N00xWbpZqnTP6P8OhY/edit#gid=0]
A pledge tracker can be found on this google sheet [https://docs.google.com/spreadsheets/d/1YoNpKDSHYxvh8rIthMvfQn_k2N00xWbpZqnTP6P8OhY/edit#gid=0]


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==Build==
==Build==
*Spindle and VFD have arrived
*First cut occurred
*Limit switches have arrived
*Safety and software phase started
 
==Software==
Chillipeppr with JSON server proposed.
 
Chillipeppr currently does not have a dedicated RUMBA / Marlin workspace, however a marlin interpolater is functional [https://plus.google.com/113620911984618239567/posts/6hhkxDZs3Eb], [https://plus.google.com/+PetervanderWalt/posts/Kpizbc2myq2]


However best advice seems to be go for a tinyG / GRBL or the newer Due (32 bit!) based TinyG2 with a 4 axis shield [https://github.com/openhardwarecoza/OPBS-PROJECT_ALPHA/tree/master/Research/Modular%20Tests/TinyG%20G2%20Platfom]. Using Martyn's drivers will cut cost significantly.
==Software Proposals==


GRBL vs TINYG [http://chilipeppr2.blogspot.co.uk/2015/06/grbl-vs-tinyg.html]
GRBL vs TINYG [http://chilipeppr2.blogspot.co.uk/2015/06/grbl-vs-tinyg.html]


CAM [http://www.cnc4everyone.com/software/cad-and-cam/]
CAM [http://www.cnc4everyone.com/software/cad-and-cam/]

Revision as of 22:54, 20 February 2016

Description

We currently have a under construction C BEAM based CNC Mill. The mill took its first cut on 20/02/2016.

The CNC Mill is based on the C BEAM profile from open builds, it is currently a X/Y table type "C BEAM MACHINE" thats 400x400x120mm but we have all the parts to make it a 1000x750mm gantry style ASAP.

Specifications

  • 800W water cooled spindle 220V 6.5A ER11 collets
  • 1.5kw VFD capable of 3000-23000 rpm
  • 3.2Mn NEMA 23 steppers
  • 20V 4 A power supply
  • 2.5A Stepper drivers
  • Control via GRBL running on a arduino CNC sheild
  • Raspberry PI serial to JSON server making the CNC shield available on chillipeppr
  • 400x400x120mm workspace

Configuration

Send the command $$ to GRBL to read the current configuration

  • steps/mm (all axis) = 100
  • Accel X
  • Accel Y
  • Accel Z
  • Max Rate X
  • Max Rate Y
  • Max Rate Z

Pledges

A pledge tracker can be found on this google sheet [1]

Design

The first machine is a 'out of the box' C Beam Machine kit [2]. This is a X/Y table machine based on the C Beam aluminum profile which offers better stability and accuracy than OX type v slot or shapeoko.

This kit will be used to make the plates for its own upgrades into our specific 1000mm x 750mm gantry style machine with dual X drive based on this design. [3]


Parts Status

We have purchased the majority of parts from Colin at robocutters.co.uk[4], he offered a wealth of advice, a great discount and is genuinely interested in supporting Hackspaces.

  • A C Beam machine kit
  • 3 NEMA 23 Motors
  • 1 1000mm linear actuator kit
  • 1 750mm linear actuator kit
  • 4 750mm 60 aluminium profiles
  • 16 wheel kits

From China we ordered as a kit:

  • 800W 60mm mount water cooled spindle
  • 1.5kW VFD
  • 12 VPump
  • Various collets

From other sources:

  • 6 C.P type limit switches (swwils)
  • Radiator (swwils)
  • 4 Core spindle cable (swwils)
  • RUMBA Board + Drivers (Martyn)

Build

  • First cut occurred
  • Safety and software phase started

Software Proposals

GRBL vs TINYG [5]

CAM [6]