Z-axis Assembly

 

Orient the spindle mount on the Z-gantry plate of the Z-axis assembly such that the two bolts pre-installed into the spindle mount, for the purpose of clamping the spindle, are on the right side of the spindle mount.

Insert the M6 shoulder screws into the two (2) upper holes of the spindle mount and fasten them into the counterbored holes of the Z-axis gantry plate. Tighten the shoulder screw on the right side of the spindle mount first. Insert the M6-25mm button head screws through the two (2) bottom holes of the spindle mount and tighten into the Z-axis gantry plate. 

Spindle mount installation

Using two (2) M5-10mm socket head screws, fasten the drag chain bracket onto the back of the Z-axis assembly. Orient the drag chain bracket such that the short edge flange contacting the Z-axis assembly is pointing downward. 

Attach drag chain bracket onto Z-axis assembly

Prepare the last inductive sensor by threading a nut onto it approximately 12mm / 0.5 inches, and add a lock washer. 

Insert the inductive sensor through the back of the Z-axis assembly such that the blue tip is pointed toward the Z-axis ballscrew. Thread a nut onto the sensor to clamp it onto the Z-axis assembly.  

Note: You will need to turn the motor coupler to shift the Z-axis gantry plate downward to allow you to access the inserted sensor. 

The sensor cannot stick out past the recessed pocket of the Z-axis carriage plate, to ensure the Z-axis ball screw nut does not contact the sensor tip when brought to the upper limit of Z-axis travel. 

Note: Do not install a lock washer onto the pocket side of the sensor as there is limited thread available for the clamping nut. 

Inductive sensor install on Z-axis Carriage Plate

Install one (1) M6 shoulder screw into the counterbore threaded hole on the back of the Z-axis assembly. 

Shoulder screw onto Z-axis Assembly

Install one (1) M6 shoulder screw into the counterbore threaded hole on the bottom of the X-axis Gantry Plate. Do not tighten this screw completely. You will tighten this screw during the next step.  

Shoulder screw onto X-axis gantry

Seat the two M6 shoulder screws onto the slots on the bottom of the Z-axis carriage plate and the top of the X-axis gantry plate. Tighten the bottom shoulder screw threaded into the X-axis gantry plate, clamping the two plates together. 

 Cross section view indicating location of two shoulder screws

Install four (4) M6-14mm button head screws, clamping the Z-axis assembly to the X-axis gantry plate. You will need to turn the motor coupler to shift the Z-axis gantry plate upward to allow you to access the four (4) mounting holes. 

M6-14mm button head screws clamping Z-axis assembly to X-axis gantry plate