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Lead CNC
Mechanical Assembly Instructions
Bulk Man 3D
v1.0 01 2019

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Summary of Contents for Bulk Man 3D Lead CNC

  • Page 1 Lead CNC Mechanical Assembly Instructions Bulk Man 3D v1.0 01 2019...
  • Page 2: Table Of Contents

    Contents About The Lead CNC Kit .......................... 2 Unpack and Check All Components ......................2 Tools Required ............................2 Pre-Assembly Notes ..........................2 Wheel Assembly ............................3 Y-Axis and A-Axis Gantry Assembly ......................4 Y-Axis and A-Axis Gantry Assembly ......................7 X-Axis Gantry Assembly ........................
  • Page 3: About The Lead Cnc Kit

    There are however a couple of difference between the Openbuilds design and this Lead CNC Kit. None of the differences are that great and the Openbuilds YouTube videos available on putting the Lead CNC together are a great resource and starting point for everyone. Most of the differences are a result of customer feedback and modifications published on a wide number of internet forums.
  • Page 4: Wheel Assembly

    The Wheel Packs come with an extra Shim and M5 Nut, put these to one side as they will be needed later. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 5: Y-Axis And A-Axis Gantry Assembly

    Make sure to correctly orientate the plates so the Eccentric Spacers are at the bottom and the squares in the centre of the plates are on the outside. Do not tighten the nut blocks as they will need to be adjusted later. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 6 Attach the upright 2080 x 250mm to the gantry using the Black Angle Corner Connectors. Note the screws going into the Gantry Plate are 10mm while the screws going into the 2080 and Tee Nuts are 8mm. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 7 Complete both the Y and A Gantry Plates. When done they should be as shown below. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 8: Y-Axis And A-Axis Gantry Assembly

    C-Beam rail. Adjust and tighten the 2 x Anti-Backlash Nut Blocks so that the Leadscrew can turn easily with no backlash. Adjust and tighten the Eccentric Spacers so the gantry rolls smoothly and without “wobble”. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 9 Attach the non-motor End Mount to the Y and A-Axis C-Beam rail. Make sure to insert 4 x T-Nuts (2 in each bottom slot) for later use to connect to the base. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 10 Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 11: X-Axis Gantry Assembly

    Make sure the 4 x M5 60mm (#7) are orientated as per the drawing below. If they are reversed, then the Assembly will not fit onto the Z-Axis Assembly (see Z-Axis Assembly section below). Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 12 The completed X-Axis Gantry Assembly should look as below: Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 13: Z-Axis Assembly

    Z-Axis Assembly First put together the Z-Axis Gantry Plate: Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 14 Second, put together the Z-Axis Actuator base and lead screw: Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 15 Attach the base to complete the Z-Axis Assembly. Make sure to insert T-Nuts into the C-Beam for the Spindle Mounting Brackets (the Spindle Mounting Bracket is an optional extra and not part of the kit). Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 16 The Completed Z-Axis Assembly will look as below: Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 17: X-Z Assembly

    Note how the 10mm screws are inside the X-Axis Assembly. Also note the orientation of both assemblies – on the X-Axis the Eccentric spacers are on the bottom and the Z-Axis Gantry Plate is at 90 degrees to the X-Axis Gantry Plate. Another view: Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 18 Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 19 Attach both End Mount Plates to the C-Beam in the same way as the Y and X Axis. Make sure to insert T-Nuts for mounting into the C-Beam before attaching the last End Mount. Lead CNC Assembly Instructions v1.0...
  • Page 20: X-Axis, A-Axis And Y-Axis Assembly

    X-Axis, A-Axis and Y-Axis Assembly Attach the X-Axis Assembly to both the Y-Axis and A-Axis Assemblies using the 5 Hole Joining Plate and Cast Corner Brackets. Make sure to square all assemblies before tightening. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 21 Note, there is one Cast Corner Bracket located under the X-Axis Gantry Assembly. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 22 Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 23 Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 24: Y-Axis And A-Axis Assemblies To Base

    Y-Axis and A-Axis sit flush to the internal face of the Base Support Rails with the End Mount Plate sitting on the top of the Base Support Rails (See A below). Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 25 Attach the End Caps to the Base Support Rails. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 26: Finished

    Finished Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...
  • Page 27: Post Assembly Notes

    • Openbuilds and the Openbuilds forums • The Open Hardware community • Our fantastic customers, whose feedback constantly helps us improve our parts and the design of this great machine. Lead CNC Assembly Instructions v1.0 © Bulk Man 3D 2019...

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