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10. Preparatory work
Before the robot is assembled, some parts are prepared. This makes the actual assembly easier and faster.
a) Application of the screw locking lacquer
In the following instructions, some screws should optionally be secured with a screw lock. This is pointed out accordingly in the text. We recommend that you
only apply the screw lock after the robot has been completely assembled and calibrated. Afterwards the screws to be secured are removed again and provided
with safety lacquer. When assembling and calibrating the legs, it might be necessary to loosen them again for adjustment tasks.
The easiest way to apply the screw lock adhesive is to apply a larger drop of the screw lock onto a base (e.g., screw set). With the help of a toothpick or a small
screwdriver, the screw lock can be proportionally applied to the thread. Do not use too much screw lock, a small drop is sufficient.
b) Ball bearings and cylindrical pins
The leg servos are additionally stabilised by ball bearings with pressed-in cylindrical pins. This significantly reduces the mechanical load on the servos and
significantly increases the service life of the servos. The ball bearings are supplied pre-assembled. If a pin is pushed out of the ball bearing during assembly, it
can be pushed back again. If the pin is no longer firmly seated in the ball bearing, you can solve the problem with a small trick.
Notch the pin at the point where it sits in the ball bearing with a side cutter, see picture
4.
Then push the pin back into the ball bearing (if necessary, carefully knock it in with a
small hammer).
Figure 5 shows the ball bearing with the cylindrical pin.
Brown marks on the ball bearing are not rust! They represent grease and
glue, which are used with the assembly of the two components in the manu-
facturing. You can remove these residues simply with alcohol (spirit).
10
Figure 2
Figure 3
Figure 4
Figure 5
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