Humanoid Biped Hand "B" Assembly Guide

Last modified by Eric Nantel on 2023/01/23 13:58

Humanoid Biped Hand "B" Assembly Guide
Rev. 1.

Updated 12/21/2011

Safety first! Wear eye protection and never touch a powered robot!

Note:
  - This assembly guide covers the assembly of one hand for the robot's right side. For the robot's left side, you will need to repeat these steps, making a mirror image of the hand.


Image of Humanoid Biped Hand "B".
 
Lexan Preparation.
The lexan pieces have a protective covering that needs to be removed before assembly. When the laser cuts, the covering melts into the cut edge which can make removal difficult. If you gently scrape the cut edge with a flat blade screwdriver, the covering can easily be lifted and peeled off.

On smaller pieces the coverings can be more difficult to remove. If you have trouble you can gently scrape the cut edge, then use duct tape to lift the covering off.

For further information on lexan, see this page.


Lexan Preparation.
 

 
Step 1.
Attach two of the multi-purpose servo brackets as shown, using two 2-56 x .250" screws and 2-56 nuts.

2 x 2 x


Figure 1.
 
Step 2.
Connect the offset "C" bracket to a multi-purpose bracket as shown. See figure 2-1 for detailed information.


Figure 2-1.


Figure 2-2.
 
Step 3.
Attach two servos as shown, using snap rivet fasteners and #2 tapping screws.

8 x 2 x


Figure 3.
 
Step 4.
Attach the 3/4" spacers to the slimmer hand panel as shown, using three 1/4" screws.

3 x


Figure 4.
 
Step 5.
Use four snap rivet fasteners to attach the servo in place as shown.

4 x


Figure 5.
 
Step 6.
Attach the second hand panel as shown, using three 1/4" screws.

3 x


Figure 6.
 
Step 4.
Firmly attach the servo hinge to the servo as shown. Make sure you line up the hole with the servo horn.

Figure 4.
 
Step5.
When you want to attach the hand to a biped, use a "C" bracket as shown. Note, position the ball bearing so that the flange is outside the bracket.

1 x


Figure 5.
 
Step 6.
Use two #2 tapping screws to attach the "C" bracket to the servo.

2 x


Figure 6.
 
Step 7.
Attach the forearm to the upper arm as shown using two #2 tapping screws. Now the arm is ready to attach to a torso. Use two #2 tapping screws to attach the offset "C" bracket to the torso servo.

4 x


Figure 7.
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Created by Eric Nantel on 2023/01/23 13:51
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