Difference between revisions of "Arm Construction"

Revision as of 05:48, 11 May 2016

Required Parts

All parts for the Arm are Machined. The Arm is broken down into three major parts: the wrist, the forearm, and the upper arm. The required parts per arm are shown below:

Wrist

Machined Parts:

1x AX-12A Holster 1x Wrist

Additional Parts:

1x AX-12A Servo 1x MX-28T Servo 1x HN07-N101 Servo Horn

12x 2mm x 9mm machine screws 4x 4mm x 5mm machine screws 1x 4mm x 8mm machine screw 8x 2mm x 3mm machine screw 1x 3mm x 8mm machine screw 4x 4mm nuts

Forearm

Machined Parts:

1x Wrist Rotator 1x Lower Arm 1x MX-64T Servo Holster 1x Lower Arm Brace Front 1x Lower Arm Brace Back

Additional Parts:

1x MX-64T Servo 1x MX-106T Servo 2x HN05-102 Servo Horns

10x 2.5mm x 9mm machine screws 16x 2.5mm x 6mm machine screws 18x 4mm x 8mm machine screws 2x 3mm x 8mm machine screws 18 4mm nuts

Upper Arm

Machined Parts:

1x Rotating Upper Arm 1x Rotating Upper Arm Brace Front 1x Rotating Upper Arm Brace 1x Upper Arm 1x Upper Arm Brace

Additional Parts:

1x MX-106T Servo 3x HN05-101 Servo Horns

24x 2.5mm x 6mm machine screws 16x 4mm x 8mm machine screws 10x 2.5mm x 9mm machine screws 1x 3mm x 8mm machine screw 16x 4mm nuts

Wrist Construction

1. In all steps for the arm we attach the servo horn first before we mount the servo. The servo horn is attached to the wrist using 2.5mm x 6mm machine screws as shown in the figure below.

2. We then attach the wrist piece to the AX-12A servo holster using 4 4mm x 5mm machine screws with nuts securing them from the wrist piece.

3. After the wrist has been attached to the AX-12A servo holster we then attach the MX-28T servo to its horn and secure it using the 3mm x 8mm machine screw.

4. Next we mount the AX-12A servo into its holster and secure it using 2mm x 9mm machine screws as shown in the images below

5. This completes the wrist piece. The Left wrist piece is constructed the same way but mirrored. Analyze the picture below to find what slight adjustments need to be made.

Forearm Construction

1. First we place the MX-64T in the groove of the lower arm as shown in the picture below. We then mount it from below using 4 2.5mm x 9mm machine screws.

2. Next we place the MX-64T Servo Holster inside the lower arm and align it the proper holes on each side. The holster should be snug against the top of the servo with the raised part of the servo perfectly fitting through the hole in the holster. See pictures for details. We then use 6 2.5mm x 9mm machine screws to mount the holster to the top of the servo and place 2 4mm x 8mm screws in the MIDDLE holes to secure the MX-64T holster to the lower arm.

3. Now we mount the servo horn to the wrist rotator using 8 2.5mm x 6mm machine screws. Once secure we then attach the horn to the MX-64T servo and secure it using a 3mm x 8mm machine screw.

If assembled properly the top of the MX-64 Holster should look exactly like the image below. Make sure it is assembled properly before continuing as it will be hard to fix later on.

4. Now