What is the Structure of an Industrial Robotic Arm?

What is the Structure of an Industrial Robotic Arm?

In this day and age, robots are somewhat simple machines. A portion of the simple tasks that our hands execute are rather difficult for these machines. The human mind can transmit numerous bits of data in a split second from the sensory nerves. This allows the limbs to be able to pick up or drop an item.

Robots, in contrast to people, are not born; they are built.  Robot makers fashion them from ordinary materials. Nonetheless, the robotic arm is very similar to the human arm in a couple of ways.

The linkages and joints contained in both are basically the same. The flexible robot arm draws power via these links in order for it to function. These mechanical arms cater to tasks that need ultimate precision and consistent performance.

Robotic arms are comprised of a few components that assist the arm with working accurately with regard to the work assigned to the mechanical arm. This review will in detail look at the parts that make up a robotic arm.

Which Components Make Up the Robotic Arm?

It is not unheard of that a robotic arm is made up of a couple of fragments. They include:

The Focal Arm

The focal arm is the principal part of the modern mechanical arm, and it comprises three sections in particular: the wrist, elbow, and shoulder. These three sections are linked with the shoulder located at the bottom of the arm and linked with the control framework to allow for front, back, and gyratory motions.

The wrist is situated at the top of the mechanical arm and is linked to the end effector. On the other hand, the elbow is situated in the center, and it allows the upper segment of the arm to move forward and in reverse without moving of the lower part.

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The Encryptor

An encryptor is a device that displays the position of the rotating shaft. Having an encoder can give significant data about the robot’s direction and how much the robot rotates.

For the most part, optical encoders have a ring linked to the rotating rod of the engine. The ring is usually cut at routine intervals to allow light to pass through. On both sides of the ring are; light-emitting diodes (LEDs) and photodiodes. This differentiates the light strength.

When the engine turns, the light will either go through the intervals or will be denied access. The pivot position and speed can be determined by observing the signs. This will enable the servo engines to manipulate speed and positioning.

The Controller

The control framework is the central processor and brain of the mechanical arm. When using the controller, the mechanical arm can automatically be programmed or physically received instructions from a human laborer.

Ideally, there are consoles of the modern mechanical arms, and they come in a range of models depending on the processing speeds needed by the mechanical arm. A portion of these controls involves PC systems depending on the task’s complexity, while others involve simple controllers such as joysticks.


These are parts found in a mechanical arm but are most likely to be found in cutting-edge robots. Mechanical arms fitted with sensors can recognize their surroundings and respond accordingly.

Sensors are critical in mechanical arms since they alleviate errors and collisions. For instance, the robot will halt if a human laborer appears to be in its way.

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The End-Of-Arm Tooling

The end-of-arm tooling is fundamentally the hand of the automated arm. Typically, this hand has two hooks and at times three, which open and close when prompted to do so. Some hands are also capable of rotating at the wrist, allowing for easy motility of parts. 

Final Thought

All in all, the robotic arm is made up of a couple of components that work hand in hand, as illustrated above. Understanding the robotic arm’s configuration is crucial, and it comes in handy in tasks such as repair, maintenance, and replacement of parts.


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