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robot arms

A picture by Kostov, Shutterstocks, Copyright-2021

The Rise Of Robot Arm: Capabilities, Uses And More

Know the uses of robot arm, its tech and how it will shape up humanity.

Sabira FatimibySabira Fatimi
September 15, 2022
inAutomation
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The growing industrial innovation and robotics have led us to the zenith of technological inventions. The advent of robots in different spheres of human activities has lessened the manual burden. It is now possible to do repetitive, dangerous, and precise tasks with ease with robot arms. They can perform specific tasks accurately and quickly.
robot arms
A picture by Sasin Tipchai, Shutterstock, Copyright-2021
The first programmed robot arm was made in 1954. Since then, we are using them in the production sectors, assembly lines, and surgical operations. Now, with the help of robotic arms, you have the freedom to perform much heavier and complicated tasks with better sophistication. They are popular in industrial projects, the medical field, and various other tasks.

Robot Arm Is The Future

The robot arm is a programmable device connected with a computer. It resembles the functions and movements of the human arm. But they are much faster than human arms. The robotic arm is a motor-driven mechanical gripper tool.
By developing efficient control systems and programs, you can take advantage of its full potential. It is very popular in small-scale industries as well as big industrial productions. They are suitable for assembly operations, large-scale production, and manufacturing components.
robot arm
A picture by TUM2282, Shutterstock, Copyright-2021
 
In a robotic arm, the design of the machine is like a human arm which acts as a gripper. Typically, the machine has a series of 4-6 joints. The robot arm can be a part of a specific complex setup or it can also perform as the sole machine. They range from large floor-mounted robot arms to small bench-top robot arms depending upon the industry.
Know The Uses
They can perform repetitive as well as specific tasks quickly with the least error. They are highly efficient and accurate. They can perform repetitive and heavy tasks for much longer durations. They can be desktop-mounted or big enough for high-volume industrial production. They reduce danger for humans in restricted zones.
robot arms
A picture by Asharkyu, Shutterstock, Copyright-2021
They are used in a wide range of industries like medical-applications manufacturing, surgical procedures, sample handling, industrial automation, machine feeding, manufacturing in automated assembly, and many more.

Components Of Robotic Arms

The suitable materials to develop a robotic arm are very crucial. If you want to create a reliable, robust and cheap, use sturdy and durable metals like steel, cast iron, and aluminum for arms and bases of robots. Then, you can cast a mechanized metal robotic arm comprising of the shoulder, elbow forearm, and wrist for your work. These rotary joints make the movement easy.
Robot arm
A picture by Ociacia, Shutterstock, Copyright-2021
The robotic controller rotates the joints’ motors and helps the arm in putting up, putting down, gripping and welding. The automation of the arms and end effector can perform tasks like die casting, arc welding, spot welding, and handling machine tools with precision.
Robot Arm
A picture by Factory_Easy, Shutterstock, Copyright-2021
The mounting and footprint positioning of the robotic arms is important for the efficiency of the performance. Some arms require heavy pedestals or more space to perform programmed movements. The robotic arm machinery includes a gripper, welding torch, polishing head, suction cups, and sensors to perform the qualitative task.
 

Types Of Robotic Arms

There is a wide range of different robotic arms available in the market. They are made with specific software suitable for specific needs. Their prices range from low cost to high price, depending upon your desired robotic technology. You can sort them according to their capabilities, like speed, movement functions, and arm joints.
robot arms
A picture by Engineer Studio, Shutterstock, Copyright-2021
There are two important components of a robotic arm. The controller controls the arm through a computer program and a user interface that will the operator use to program the robot. The arms have 6-7 joints and run through different stepper motors through a computer. They can be attached to the big industrial mechanical devices for heavy and repetitive tasks. This helps the end effector or hand of robotics to work in precision.
 

SCARA Robot Arm

The SCARA is an acronym for Selective Compliance Assembly Robot Arm. The SCARA robotic arm is most popular in the pick and place application and assembly operation. They are faster than the Cartesian robotic arm. They have a limited degree of limited acceptance of flexibility in their axes.

 

robot arm
A picture by Aleksandra Suzi, Shutterstock, Copyright-2021
It has two parallel rotary joints. It allows inserting components in tight-fitting spaces without much damage. They are good for high-tech industrial production. Plus, they can replace human labor with precision and speed.
Cartesian Robot Arm
The Cartesian robotic arms are well known as gantry robot arms or rectilinear arms. They perform according to x, y, and z axes form of cartesian coordinates. This enables them to move in linear and right-angle movements in three-dimensional space.
robot arms
A picture by Asharkyu, Shutterstock, Copyright-2021
It is easy to switch positions by manipulating cartesian coordinates. You can set up them on machines to vertical reach or horizontal reach. They can be used while working with CNC machines and 3D printing. They are used for pick and place assembly operation and laboratory automation. They can operate heavy loads with accuracy and high speed.
Spherical Robot Arm
The spherical robot arm is also known as the polar robot arm. It operates within a spherical working area. The arm has a combination of two rotary joints, a linear joint and a rotational joint connected. It is connected to its base via a quirk joint.
robot arm
A picture by Mykola Holyutyak. Shutterstock, Copyright-2021
It can work on the spherical workspace by using axes of a polar coordinate system. This allows the arm to perform similar to cylindrical robotic arms. They can spot welding, gas welding, arc welding, die casting, assembly operations, and machine tool handling.

Cylindrical Robot Arm

They use the cylindrical coordinate system. Their movement is restricted within a cylindrical-shaped space. They can move up, down, and around only. This robotic arm is well suited in operations like spot welding, die casting, assembly operations, and machine tool handling.
robot arm
A picture by Factory_Easy, Shutterstock, Copyright-2021
They can perform a specific task at a time. The arm has both rotary and prismatic joints which enhance its rotational and linear movements.
 
The Top Capabilities Of Robotic Arms
They can perform heavy-lifting, repositioning functions in the production line, picking small objects with precision, and adding more details at high speed. They are perfect to replace the labor of multiple workers and boost the production stock many folds. They can weld and drill faster.
robot arm
A picture by Metamorworks. Shutterstock, Copyright-2021
They can perform anything which demands precision, speed, and repetition while handling machine tools. Also, dangerous and degrading jobs are not fit for humans. Robotic arms usually have their specified payload capacities. Some machine requires longer traveling distance between payloads. You need to find a greater payload capable arm for the expected purposed work.
 
Sensors In Robotic Arms
Robotics research has upgraded the robots. The development of sensors in robotic arms helped to ensure the safety of workers and increased work performance with the least errors.
The 2D vision sensors have video cameras. This helps the robotic arm to understand and follow the designated path without any deviations. This ensures that the arm will work on the specific work location. The camera transfers the programmed data to the robotic arm sensors. This leads the arm to perform movements.
robot arm
A picture by Zapp2Photo, Shutterstock, Copyright-2021
The emerging 3D sensor technology has boosted the performance of robots. They are new and still in the developing stage. They can make robots perform many complex tasks. In 3D sensors, they use two cameras instead of one. The cameras use to collect data from different angles. You can also use laser scanners to see high-definition 3D views for robotic arms.
 
Another important sensor is collision detection sensors and heat sensors. They are highly sensitive and provide knowledge of the surroundings to the machine. They will immediately alert or stop the devices if the software or motor stopped working or misbehavior of the end effector.
 
The Force Torque sensor can detect and instruct the arm about the required amount of force. It can also change the intensity of applied force according to needs. The safety sensors can also detect any constraints near the working area or a certain range. It will immediately stop working to secure the work area and workers. So, it is crucial for human safety and workplace safety as well.

Things To Keep In Mind When Using Robot Arms

Robotic arm
A picture by Pixel B, Shutterstock. Copyright-2021
The powerful robot arms can also damage production and manufacturing if not handled carefully. Always perform tasks at a controlled speed. While the placement of any arm components, be careful with their payload, ratings, and feedback.
Otherwise, the cheap products might hamper the progress. The working environment should be free from dust, moisture, or other physical constraints. Otherwise, it will directly affect the potentiality of the robots.
Conclusion
Robotic arms are popular in big as well as small industries. They can perform difficult works faster and accurately than human workers.
Due to its rapid expansion and usability of robotic arms technology, its production is increasing in the last few decades. Now more sophisticated robotic arms are available at a low cost. Thus, they are easily affordable now.
Some robotic arms come with in-built software for much precision and speed. They are also very expensive due to certain specific features. You might be interested in looking for a robotic arm but before investing money, make sure the exact purpose and suitable environment.
Also Read: Your Guide to Buying the Best Laser Engraving Machine

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  • Sabira Fatimi
    Sabira Fatimi

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