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What is a cobot and what are its advantages in industrial work?
Cobots are becoming more common in industrial work environments, and Treston has already managed to implement several workstations around cobots. When designing cobot-friendly workstations, many aspects must be taken into account, such as the ergonomics of the work, the physical requirements of the cobots, and the level of collaboration between the cobot and the human.
In this article, we will go through what cobots are and what are the advantages of using them in an industrial work environment.
In this article, we will go through what cobots are and what are the advantages of using them in an industrial work environment.
What is a cobot?
A cobot is a robot that cooperates with humans and does not need special safety devices around it. Unlike a regular robot, it can also be in contact with a human.
Cobots were originally born to improve the ergonomics of work and increase collaboration between humans and robots in various industries. Cobots are used to improve occupational health and safety, build more meaningful work environments for employees, and increase work efficiency and economic growth.
The structure of a cobot is often light, so that it can be safely integrated to work at the same workstation as a human. Cobots can also be mounted on mobile workstations, such as carts, so that they can be used in multiple workstations.
What kinds of tasks can a cobot perform?
Cobots can perform difficult, boring, repetitive work steps that easily cause musculoskeletal disorders. They can often also improve the safety of the work. Ergonomically challenging or monotonous work steps such as gluing, screwing, packing and tasks that require reaching are suitable to be transferred to a cobot.
Human-robot collaboration (HRC)
Cobots do not replace workers, but they collaborate with humans. In connection with cobots and robots, the term HRC is often used, which means human-robot collaboration. HRC has five different levels (levels of collaboration, LoC), which are determined according to the technical characteristics of the robot and the work requirements.
- Level 1: Cell
The human and the robot are working in different cells. - Level 2: Coexistence
The human and the robot are in the same environment, but they do not interact. - Level 3: Synchronized
The human and the robot work in the same space at different times. - Level 4: Cooperation
The human and the robot work in the same workspace at the same time, but they perform different tasks. - Level 5: Collaboration
The human and the robot perform a task together.
The Treston cobot cart serves the customer's needs
Check out the video for an example of the Cobot cart designed by Treston and ABB together.
The benefits of a Cobot workstation for the employer
Three out of five people of working age report work-related musculoskeletal disorders, and at the same time, working careers are getting longer. Sick leave and occupational health costs are constantly increasing. When a cobot workstation is planned at the workplace, the employer's interests often include minimizing safety risks and production time, and improving quality and efficiency. These factors are also used as evaluation criteria for the success of cobot workstations.
- Less sick leave and decreased health care costs.
- Working careers get longer.
- Employees commit to their work.
- Employee performance can be optimized for work tasks that require skill.
- Employee motivation improves.
- Quality improves.
- Productivity increases.
- Production time is reduced.
The benefits of the cobot workstation for the employee
From the employee's point of view, healthier, safer, and less repetitive work improves motivation and the meaningfulness of work. Thanks to cobots, employees can also develop their own skills, and work time can be used for tasks that require more skill.
- Work is safer.
- Work is more meaningful because there are fewer monotonous tasks and repetitions.
- The risk of injury is reduced, which leads to healthier leisure time.
- There are fewer uncomfortable working postures.
- Satisfaction with one's work improves.
What kinds of challenges can occur with cobots?
Cobots have become significantly more common in recent years, and it can be proven that they have many good features in industrial work environments, but they also naturally come with challenges. It should be mentioned that working with technology can bring various psychological challenges to work.
Working with the cobot, as with other new tools, requires learning something new. The possibility to adjust the cobot's properties, such as speed, and proper familiarization are important points to consider during commissioning.
Sources:
Guilherme Deola Borges, Paula Carneiro, and Pedro Arezes
Human Factors Effects on a Human-Robot Collaboration System: A Modelling Approach, University of Minho, Guimaraes, Portugal
- Federico Fraboni, Luca Gualtieri , Francesco Millo, Matteo De Marchi, Luca Pietrantoni, and Erwin Rauch
Human-Robot Collaboration During Assembly, Tasks: The Cognitive Effects of Collaborative, Assembly Workstation Features - Luca Gualtieri, Federico Fraboni, Matteo De Marchi, and Erwin Rauch
Evaluation of Variables of Cognitive Ergonomics in Industrial Human-Robot Collaborative, Assembly Systems - Alberto Ranavolo, Giorgia Chini, Francesco Draicchio, Alessio Silvetti, Tiwana Varrecchia, Lorenzo Fiori, Antonella Tatarelli, Patricia Helen Rosen, Sascha Wischniewski, Philipp Albrecht, Lydia Vogt, Matteo Bianchi, Giuseppe Averta, Andrea Cherubini, Lars Fritzsche, Massimo Sartori, Bram Vanderborght, Renee Govaerts, and Arash Ajoudani
Human-Robot Collaboration (HRC) Technologies for Reducing Work-Related Musculoskeletal Diseases in Industry 4.0 - Guilherme Deola Borges, Paula Carneiro, and Pedro Arezes
Human Factors Effects on a Human-Robot Collaboration System: A Modelling Approach
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The collaboration with Treston was seamless, relaxed, and professional as we developed the cobot cart together
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