Proxxon MF70 CNC kit

Proxxon MF70 CNC kit The Proxxon MF70 milling aluminum:https://www.youtube.com/watch?v=0W1iQ1PUNVY Following…
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updated May 2, 2022

Description

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Proxxon MF70 CNC kit

The Proxxon MF70 milling aluminum: https://www.youtube.com/watch?v=0W1iQ1PUNVY

Following improvements/changes have been made compared to the design of ttsalo:

  • full x-axis table range is now available. Using the ttsalo design I lost 5 mm of the x-axis range; perhaps this issue was caused by changes Proxxon did make to the design of the MF70.
  • No bearings need to be removed/replaced; the x/y/z axis is simply driven by a coupler connecting the stepper directly to the handwheel. The coupler is slightly flexible since it is made out of NinjaTek.
  • holes for end switches have been added for all axis

Required 3D printed parts:

  • BracketX.stl (1x)
  • BracketY.stl (1x)
  • BracketZ.stl (1x)
  • CouplerXY.stl (2x)
  • CouplerZ.stl (1x)

Optional 3D printed parts:

  • ShockAbsorber.stl (3x)
  • DirtCapBracketX (1x)
  • DirtCapBracketY (1x)

Required other parts:

  • Nema17 (3x)
  • hex screw m3x16 (15x)
  • grubscrew m3 (6x)
  • nut m3 (6x)
  • hex screw m3x25 (4x) or diameter 3 mm screws that 8 mm longer than the originals (4x)
  • hex screw m3x30 (4x)
  • washer m3 (4x)

Optional other parts:

  • endswitch for x-axis and y-axis (2x)
  • screw m2.5x20 (4x)
  • nut m2.5 (4x)
  • endswitch for z-axis (1x)
  • screw diameter 2.5 mm, length 15 mm (2x)

Suggested Materials:

  • ABS (95% infill): BracketX, BracketY, BracketZ
  • NinjaTek Cheetah (50% infill): CouplerXY, CouplerZ, DirtCapBracketX, DirtCapBracketY
  • NinjaFlex (20% infill, not important): ShockAbsorber
  • no supports are required

Assembly instructions x and y-axis:

  • attach steppermotor to bracketX(Y) and shockabsorber using hex screw m3x16 (4x)
  • assemble couplerXY using 2 grubscrews and 2 m3 nuts
  • attach couplerXY to handwheel using hex screw m3x16 (of course the handle from the handwheel needs to be removed first).
  • attach bracketX(Y) to x/y table using hex screw m3x25 (2x), (or use the longer screws with diameter 3 mm if they could be resourced)

Assembly instructions z-axis:

  • attach steppermotor to bracketZ and shockabsorber using hex screw m3x16 (4x)
  • assemble couplerZ using 2 grubscrews and 2 m3 nuts
  • attach couplerZ to handwheel using hex screw m3x16 (of course the handle from the handwheel needs to be removed first).
  • attach bracketZ to z-column using hex screw m3x30 (4x)

remark:

  • I did tap M3 thread in the table for the X/Y axis since I could not source screws with the same pitch that were originally holding the caps. This is not required if screws can be sourced that are about 8 mm longer than the original ones.

Changes 21 May 2020:

  • added optional dirt caps for BracketX and BracketY.

Changes 01 Jan 2021:

  • added optional gauge holder "GaugeHolder.stl"
Category: Machine Tools

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The author marked this model as their own original creation. Imported from Thingiverse.

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