04. Motion system - CoreXY

Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

Left Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

2x Nema 17 Stepper motor - HT - 48mm

2x 20 Tooth 2GT Timing Pulley for 9mm Belt

6x M3x6 Countersink Screws

3x Aluminium spacer 5x8x4mm

1x Aluminium spacer 5x8x14mm & Aluminium spacer 5x8x17mm

5x Mini precision shim 8x5x1mm

6x Ball bearing 695ZZ

14x Ball bearing F695ZZ

Right vc4_motor_spacer

Left vc4_motor_spacer

4x M5x45 Cap Head Screws

Right Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

Ensure the t-nuts are on the same side as the countersink bores.

Nema 17 Stepper motor - HT - 48mm

Be mindful of the cable orientation, it should replicate the image.

3x M3x6 Countersink Screws

Insert the M3x6 screws into the Right Stepper motor plate assembly as shown, and fasten them to secure the NEMA17 motor.

Refer to the side of the assembly which has the M5 holes

Remove the two M6x12 Cap Head Screws

Remove the two 3030 Drop-in T-Nut - M6

Right vc4_motor_spacer

Install the printed part next to the nema 17 stepper motors, and make sure the holes are aligned.

Insert the two M6x12 Cap Head Screws

Insert the two 3030 Drop-in T-Nut - M6

Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

Ensure the right vc4_motor_spacer printed part is aligned with the plate

Insert the M5x45 Cap Head Screws all the way

Once inserted, the printed part should be able to hold them in place

Install the timing pulley onto the NEMA17 shaft, oriented as shown

The timing pulley will be aligned and fully secured in a later step.. Do not tighten the M3 grub screws

Install the following components in the order shown in the image:

Mini Precision Shim

F695ZZ Ball Bearing (Flange at the bottom)

695ZZ Ball Bearing

F695ZZ Ball Bearing (Flange at the top)

Insert a Mini Precision Shim on the rear M5x45 Screw

Install the following components on the rear M5x45 Screw in the order shown in the image:

F695ZZ Ball Bearing (Flange at the bottom)

695ZZ Ball Bearing

F695ZZ Ball Bearing (Flange at the top)

Install an Aluminium spacer 5x8x4mm on the rear M5x45 Screw

Install an Aluminium spacer 5x8x17mm on the front M5x45 Screw

Set the assembly aside, let's assemble the left stepper motor.

Left Stepper motor plate assembly from Step 27 of chapter 01.Frame assembly

Ensure the t-nuts are on the same side as the countersink bores.

Nema 17 Stepper motor - HT - 48mm

Be mindful of the cable orientation, it should replicate the image.

3x M3x6 Countersink Screws

Insert the M3x6 screws into the Right Stepper motor plate assembly as shown, and fasten them to secure the NEMA17 motor.

Refer to the side of the assembly which has the M5 holes

Remove the two M6x12 Cap Head Screws

Remove the two 3030 Drop-in T-Nut - M6

Left vc4_motor_spacer

Install the printed part next to the nema 17 stepper motors, and make sure the holes are aligned.

Insert the two M6x12 Cap Head Screws

Insert the two 3030 Drop-in T-Nut - M6

Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

Ensure the left vc4_motor_spacer printed part is aligned with the plate

Insert the M5x45 Cap Head Screws all the way

Once inserted, the printed part should be able to hold them in place

Install the timing pulley onto the NEMA17 shaft, oriented as shown

The timing pulley will be aligned and fully secured in a later step. Do not tighten the M3 grub screws

Insert a Mini Precision Shim on the rear M5x45 Screw

Install an Aluminium spacer 5x8x14mm on the front M5x45 Screw

Install the following components on the rear M5x45 Screw in the order shown in the image:

F695ZZ Ball Bearing (Flange at the bottom)

695ZZ Ball Bearing

F695ZZ Ball Bearing (Flange at the top)

Insert a Mini Precision Shim on the rear M5x45 Screw

Install the following components in the order shown in the image:

F695ZZ Ball Bearing (Flange at the bottom)

695ZZ Ball Bearing

F695ZZ Ball Bearing (Flange at the top)

Aluminium spacer 5x8x4mm

Set the assembly aside. it will be used in a few steps

4x M5 Hex Locking nut

8x 3030 Drop-in T-Nut - M6

8x M6x12 Cap Head Screws

2x M3x40 Countersink Screw

2x Aluminium Spacer 3x6x30mm

The metal plates are not marked with "R" or "L" Please refer to the orientation to help identify them.

vc4_trim_coreXY_right and vc4_trim_coreXY_left

vc4_xy_motor_upper_right and vc4_xy_motor_upper_left

vc4_trim_coreXY_right

2x M5 Hex Locking nut

Insert the M5 Hex Locking nut upside down.

vc4_xy_motor_upper_right

Ball bearing F695ZZ

Insert the Ball bearing F695ZZ with the flange at the top

Ensure the bearing flange is on the same side as the countersink bore.

vc4_xy_motor_upper_right assembly

vc4_trim_coreXY_right assembly

Insert the four M6x12 Cap Head Screws

Insert the four 3030 Drop-in T-Nut - M6

Loosely thread a 3030 T-Nut onto each of the M6x12 screws. Do not tighten them at this point.

Repeat Steps 14 and 15 and complete the left assembly

Place the right stepper motor assembly from Step 12 in the frame

Install the right stepper motor assembly to the V-Core 4 frame as shown

Tighten the four M6x12 screws to secure the motor_plate assembly to the frame

Make sure the plate is fully seated against the 3030 extrusion before tightening the M6x12 screws

Take care not to over tighten the M6x12 screws as you can damage the printed parts

Right top stepper motor assembly from Step 16

Make sure the plate is fully seated against the 3030 extrusion.

Insert the Aluminium Spacer 3x6x30mm between the top and bottom plates

Insert the M3x40 countersink screw through the top plate, the aluminium spacer 3x6x30mm, and the bottom plate. Do not thread it to the stepper motor at this stage

Progressively tighten both M5x45 screws, alternating between them, so the top plate assembly is pulled down uniformly.

Take care not to over tighten the M5x45 screws as you can damage the printed parts

Tighten the M3x40 countersink screw to to nema 17 stepper motor thread.

Tighten the four M6x12 screws to secure the motor_plate assembly to the frame

Make sure the plate is fully seated against the 3030 extrusion before tightening the M6x12 screws

Take care not to over tighten the M6x12 screws as you can damage the printed parts

Repeat Steps 17 to 20 and install the left stepper motor to the V-Core 4 frame.

Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0

Rat Rig V-Core 4.0 - Tensioner Body - Left v1.0

6x M4x30 Cap Head Screw

2x M5x22 Countersink Screw

2x M4x6 Set Screw

2x M4x20 Cap Head Screw

4x Mini precision shim 8x5x1mm

4x Ball bearing F695ZZ

2x Ball bearing 695ZZ

2x Rat Rig V-Core 4.0 - Tensioner Arm v1.0

Rat Rig V-Core 4.0 - Tensioner Arm v1.0

Install the following components in the order shown in the image:

Mini Precision Shim

F695ZZ Ball Bearing (Flange at the top)

695ZZ Ball Bearing

F695ZZ Ball Bearing (Flange at the bottom)

Mini Precision Shim

Insert the M5x22 Countersink Screw and tighten it to secure the assembly.

Repeat Steps 25 and 26 to assemble another tensioner arm

Rat Rig V-Core 4.0 - Tensioner Body - Right v1.0

3x M4x30 Cap Head Screws

Insert the screws through the holes on the V-Core 4 frame extrusion and thread them in the Tensioner Body - Right v1.0.

Tighten the M4x30 cap head screws.

Front tensioner arm assembly from Step 26

Insert the tensioner arm in the lower slot of the tensioner body.

Make sure the tensioner arm has cleared the hole on the tensioner body.

M4x20 Cap Head Screw

Insert the screw trough the tensioner body and lightly thread it to the tensioner arm.

The M4x20 screw must be partially, but not fully, threaded into the tensioner arm. This allows the largest possible range for tensioning the belts further in the guide.

M4x6 Set Screw

Tighten the Screw to secure the tensioner arm in place

Repeat Steps 27 to 29 and assemble the Left front tensioner

Your V-Core 4 should look like this at this stage

Don't forget to drink some water! Stay hydrated.