Assembly Day 2: The drive system Part 2

Add Motor Carriage

Next we inserted the motor carriage into the bottom of the main square fastening it down with the 4 x m5x65mm bolts.

Add M8 Bolts

Insert 2 x M8x90mm bolts from the inside outward through the bearings on the long ends of the main square piece.

Ensure that the bolt heads/ends are on the inside and the threads are facing outside of the main square.

Insert motors into roller mounts

Next we insert the two 165rpm planetary motors into the roll motor mounts.

                

NOTE: These mounts work as eccentric spacers in that one side is wider than the other, as you turn the unit with the motor inside, it can align tighten the belt connection.

The motor ends where the servo arm is pushes outwards, the inside of the mount should hit the larger portion of the planetary motor body and prevent it from going further.  This mount should be snug enough around the motor.

Add motor mounts to Motor Carriage

Insert the motor mount and motor into the motor carriage, ensuring that the two motors ends are facing inwards of the assembly while the 84rpm motor which handles the head tilt is facing the opposite direction.

Screenshot of main drive motors installed in motor carriage, unlick the photo, turn the motor mounts so that the open ends are facing downwards (loose) so we can easily install the belt later on.

The head rotation servo does not have a roll motor mount and inserts directly into the motor carriage.

The completed assembly should look like this at this point.  Need to now tighten down and lock in the motors to the carriage

Tighten down Motor Carriage

Add m5 nuts to the slots located on the sides of the motor carriage.  These will allow the m5 bolts to be tighten down holding the motors in place firmly.

Insert 3 x m5 nuts into each side of the motor carriage, slowing pushing them in to align with their respective bolts… this is not easy.

Insert two m5x20mm bolts to tighten down the assembly over the motors.

Adding the Rods and Axles

Cut the 12mm rod to 19” long using a cutting wheel on a dremmel or rotary tool of choice.

NOTE: Verify and measure the inner diameter of the sphere frame and verify its length between sides.  Ensure there is slack as getting it snug from side to side is not needed.

Cut the 8mm threaded rod which is used to connect to the magnet assembly to 8” in length.

NOTE: this too can be more or less, we will adjust its height using locking nuts once installed on the head control arm.

Cut the smooth 6mm rod to 6” which will then be coupled from the motor at the bottom of the head arm and run through the assembly with gears at the end.

Overview of Lengths:

• 12mm = 19”
• 8mm= 8"
• 6mm= 6"