Mendel Z-axis
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You may find the Mendel assembly data sheet useful during assembly.
Contents
Leadscrew base
Total # of assemblies 2
Name | Qty/assembly | Total Qty | Type |
z-leadscrew-base-bar-clamp_2off.par | 1 | 2 | RP |
z-leadscrew-base_2off.par | 1 | 2 | RP |
624-bearing.par | 2 | 4 | Bearing |
m4-nylock.par | 2 | 4 | Fastener |
m4-washer.par | 8 | 16 | Fastener |
m4x40-cap.par | 4 | 8 | Fastener |
m5-mudguard-washer.par | 2 | 4 | Fastener |
RP parts
Assembly
Leadscrew base with optoswitch
One of the leadscrew bases needs an optoswitch.
BOM
Total # of assemblies: 1
Name | Qty/assembly | Total Qty | Type |
Optoswitch PCB | 1 | 1 | PCB |
z-opto-bracket_1off | 1 | 1 | RP |
z-axis-opto-spring.aoi | 1 | 1 | Spring |
m4-nut.par | 1 | 1 | Fastener |
m4-washer.par | 1 | 1 | Fastener |
m4x40-cap.par | 1 | 1 | Fastener |
m3-capx20.par | 2 | 2 | Fastener |
m3-nylock.par | 2 | 2 | Fastener |
m3-washer.par | 4 | 4 | Fastener |
Printed parts
Assembly
Slot the nut into the hexagonal cavity between the two bearings (underside in view). Put a spare 15mm M4 cap screw through a washer and tighten that on the nut to move it down the cavity - it should be a snug fit and not fall out. Undo the cap screw and return it to your collection.
This picture shows the assembly with the spring omitted for clarity (the opto-switch PCB is upside-down in this picture - sorry...):
And this one shows it in place:
Put the bearing 40mm M4 screws and washers through first, then the spring assembly and its 40mm M4 screw. Tighten the spring screw a little way into its trapped nut. Then tighten the nuts onto the bearings. Finally fit the PCB. Don't tighten the M3 screws too tight, or you'll bend it on the solder bumps sticking out the back (if you've got some, you can scalpel off two 2 mm lengths of 3mm internal-diameter silicone tube and use them as spacers).
Motor bracket
BOM
Total # of assemblies:1
Name | Qty/assembly | Total Qty | Type |
drive-pulley_3off.par | 1 | 1 | RP |
z-motor-bracket_1off.par | 1 | 1 | RP |
m3-capx20.par | 4 | 4 | Fastener |
m3-washer.par | 4 | 4 | Fastener |
stepper-motor-nema17-fl42sth47-1684A-01.par | 1 | 1 | Motor |
Printed parts
Assembly
Tensioner
BOM
Total # of assemblies 1
Name | Qty/assembly | Total Qty | Type |
z-tensioner_1off.par | 1 | 1 | RP |
624-bearing.par | 1 | 1 | Bearing |
m4-nylock.par | 1 | 1 | Fastener |
m4-washer.par | 3 | 3 | Fastener |
m4x40-cap.par | 1 | 1 | Fastener |
m5-mudguard-washer.par | 1 | 1 | Fastener |
Printed parts
Assembly
Lead-screw
BOM
Total # of assemblies 2
Name | Qty/assembly | Total Qty | Type |
stud-z-leadscrew.par | 1 | 2 | Studding |
z-drive-pulley-rim_4off.par | 2 | 4 | RP |
z-driven-pulley_2off.par | 1 | 2 | RP |
608-bearing.par | 1 | 2 | Bearing |
m8-nut.par | 3 | 6 | Fastener |
m8-washer.par | 6 | 12 | Fastener |
Printed parts
Assembly
Loosely load the lead-screw (1) to ensure studding comes flush with lower nut. Tighten the two nuts which surround the bearing. Remove the lower parts (2) and store - these will be re-assembled later.
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