The material used to fabricate the body of the robotic arm was chosen to be aluminum as it is a light weight metal, rigid, cheap compared with stainless steel and easy available in the market. It is also resistance to wear and rust. Another important point why aluminum was chosen mainly because it is easy to fabricate as the components of the robotic arm require a lot of bending and hole drilling process. The thickness of the aluminum was chosen to be 1.5mm thick.
This thickness of material is common and the price is reasonable. This thickness is suitable for the robotic arm and after bending and drilling, the material is still rigid and strong. For the fabrications of the individual parts design ideas and dimensions are provided to the fabricator to manufacture the parts .
The construction and assembly of the body of robotic arm consists of few major components which include aluminum pieces, screws, nuts and washers. The construction of the robot arm begins with base when the arm is mounted and during rotating operations. Then, hole a drill at one side to allow the servo motor wire to go through. Then, the individual part used to form the rotating base is assembled together using screws, nuts and washer. Servo motors are attached to the body using servo horns that are provided with the servos.
Next, the shoulder components are assembled together before mounting to the rotating base. This is followed by assembly of the elbow, wrist, and gripper components. Then all servo motors that are attached to the components are turned manually to determine the maximum limit. It is then manually positioned to the middle position. Finally, all components of shoulder, elbow, wrist and gripper are secure into position. As the motors are placed at their centre position, during the placement of the shoulder, elbow and wrist, the parts are ensure to stand horizontally so that after attachment, the robotic arm is able to move to the right and left position by 90 degrees each side.
As for the gripper, the parts are tightened with enough force to allow the pieces to move freely without friction and unwanted sound but enough to hold the parts in place. The final step is to mount the gripper to the wrist.
This thickness of material is common and the price is reasonable. This thickness is suitable for the robotic arm and after bending and drilling, the material is still rigid and strong. For the fabrications of the individual parts design ideas and dimensions are provided to the fabricator to manufacture the parts .
The construction and assembly of the body of robotic arm consists of few major components which include aluminum pieces, screws, nuts and washers. The construction of the robot arm begins with base when the arm is mounted and during rotating operations. Then, hole a drill at one side to allow the servo motor wire to go through. Then, the individual part used to form the rotating base is assembled together using screws, nuts and washer. Servo motors are attached to the body using servo horns that are provided with the servos.
Next, the shoulder components are assembled together before mounting to the rotating base. This is followed by assembly of the elbow, wrist, and gripper components. Then all servo motors that are attached to the components are turned manually to determine the maximum limit. It is then manually positioned to the middle position. Finally, all components of shoulder, elbow, wrist and gripper are secure into position. As the motors are placed at their centre position, during the placement of the shoulder, elbow and wrist, the parts are ensure to stand horizontally so that after attachment, the robotic arm is able to move to the right and left position by 90 degrees each side.
As for the gripper, the parts are tightened with enough force to allow the pieces to move freely without friction and unwanted sound but enough to hold the parts in place. The final step is to mount the gripper to the wrist.
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