Bulk Man 3D OX CNC Mechanical Assembly Instructions

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OX CNC

Mechanical Assembly Instructions

Bulk Man 3D

v1.2 2019

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Page 1 OX CNC Mechanical Assembly Instructions Bulk Man 3D v1.2 2019...
Page 2: Table Of Contents
Contents About The Ox CNC Kit ..........................2 Unpack and Check All Components ......................2 Tools Required ............................2 Pre-Assembly Notes ..........................2 Wheel Assembly ............................3 Y-Axis Plate Assembly ..........................4 X-Axis Gantry Assembly – Front Plate ..................... 7 X-Axis Gantry Assembly –...
Page 3: About The Ox Cnc Kit
About The Ox CNC Kit The mechanical kit is based on the Open Builds Ox CNC Router designed by Mark Carew and published on openbuilds.com. There are however a couple of difference between Mark’s design and this Ox Kit. None of the differences are that great and the Openbuilds YouTube videos available on putting the Ox together are a great resource and starting point for everyone.
Page 4: Wheel Assembly
Assemble all the Solid V Wheels as per the drawing. It can help to use one of the longer screws to align everything by threading the parts on one by one. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 5: Y-Axis Plate Assembly
The NEMA23 stepper motor is attach as shown. Make sure the 3mm spacers are between the Gantry Plate and the Stepper. Don’t tighten too much just yet as a little play is needed when tightening the belts later. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 6 Attach the wheels to the gantry. Use Eccentric spacers on the 3 lower wheel and 6.35mm spacer on the upper 4 wheels. Tighten the top sets but not the bottom as they will need to be adjusted when put on the V-Slot. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 8: X-Axis Gantry Assembly - Front Plate
Attach the spacer blocks with M5 x 10mm screws. If you have 2040 for your Z-axis then use the nearer set of holes, if you have 2060 then use the otter set. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 9 Using M5 x 45mm screws attach the V-Wheels through the Gantry Plate and the spacer blocks. Use 3 x Eccentric spacers on one spacers block and 3 x 6.35mm spacers on the other. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 11: X-Axis Gantry Assembly - Back Plate
X-Axis Gantry Assembly – Back Plate Attach the NEMA23 stepper to the gantry plate with 4 x M5 20mm screws, making sure to place the 3mm spacer in between the gantry plate and the NEMA23. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 12: X-Axis Front And Back Plate Assembly
Placing the spacers, shims and wheels as per the drawings below, attach the front and back plates using the 4 x M5 x 65mm screws. Note two eccentrics are on each lower screw. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 15: Z-Axis Assembly
Attach Flexible Coupling to the NEMA23, then using the 40mm Spacers attach the NEMA23 to the Threaded Rod Plate as shown. Make sure the bearing recess in the plate is facing away from the NEMA23 (see below). OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 16 Using 3 x 8mm screws, attach the Threaded Rod assembly to the Z-Axis V-Slot. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 17 Block about ½ way. Attach the bearing and collar and push the Lead Screw into the Flexible Coupling. Tighten the coupling, make sure the bearing is correctly seated in the Threaded Road Plate recess. Slide the collar to the bearing and tighten. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 18 At the other end, slide on the Lock Collar and bearing. Screw the remaining Threaded Rod Plate into the V-Slot. Seat the bearing and tighten the collar. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 19 Tighten all screws and test again by hand turning the lead screw. If the gantry is to tight then re-adjust the eccentric spacers. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 20: X-Axis Gantry Assembly
Before starting the X Axis Gantry, make sure to tap (M5) all the holes on the 2060 and 2040 to 8mm depth. Screw the 2060 and 2040 to the Y Plate. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 21 Slide in the T-Nuts and X/Z Gantry and screw the Y Plate to the 2060 and 2040. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 23 Tighten the 4 Eccentric Spacers on the X/Z so that there is no lateral movement but the gantry can still move freely back and forth. The completed X Gantry should look like this. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 24: Ox Base Assembly
(M5) the 2080 ends to a depth of 8mm. Then put the base together as per the drawings below. Don’t forget to put the X-Gantry on before securing the last end! Also, make sure to tighten the Eccentric Spacers on each side. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 27: Gt3 Timing Belt And Pulley Assembly
GT3 Timing Belt and Pulley Assembly If you haven’t already done so, put the GT3 Timing Pulleys on the 3 stepper motor shafts. Centre the pulley over the groove in the V-Slot. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 28 A T-Nut and an 8mm screw function as a belt clamp. Prepare each end (6 in total) as per the drawings below: OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 29 Making sure the teeth are facing down, attach one end of the Timing Belt with the clamp and feed the rest under the V-Wheels, over the Timing Pulley, and under the V-Wheels. Pull tight and secure with the other clamp. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...
Page 32: Post Assembly Notes
Mark Carew, 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. OX CNC Assembly Instructions v1.1 © Bulk Man 3D 2019...

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