Human–Robot Collaboration and Lean Waste Elimination: Conceptual Analogies and Practical Synergies in Industrialized Construction
Abstract
:1. Introduction
- What commonalities are there between the lean production paradigm and HRC?
- How do HRC and lean construction interact in industrialized construction practices?
- How do other Industry 4.0 technologies support this interaction?
2. Theoretical Background
3. Literature Review
4. Research Methodology
- Steps 1 and 2: finding a practical, relevant problem that has research potential and obtaining a general, comprehensive understanding of the topic.
- Step 3: Designing a new construct
- Step 4: Demonstrating that the new construct works
- Steps 5–6: Showing the connections between the solution and theoretical developments/examining the scope of applicability
5. Results and Analysis
5.1. Elimination of Muri: Enhancement of Ergonomics/Safety
5.2. Elimination of Mura: Enhancement of Efficiency
5.3. Elimination of Muda (Motion, Waiting, Overprocessing): Enhancement of Efficiency
5.4. Elimination of Muda (Defects): Enhancement of Efficiency
5.5. Elimination of Muda (Unused Employee Creativity): Enhancement of Efficiency
6. Discussion
7. Conclusions
Funding
Data Availability Statement
Conflicts of Interest
References
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Lean Objective: Elimination of Muri (Overburdening People) [27,30] | HRC Objective: Improvement of Ergonomics/Safety [14,72] |
---|---|
Muri is pushing a machine or person beyond natural limits and results in safety and quality problems. | Cobots are increasingly adopted in tasks involving repetitive motions to minimize MSDs, injuries provoked by poor ergonomics, reduce the operator’s fatigue, and increment the overall level of comfort. |
Muri means “hard to do” and can be caused by poor job design or ergonomics, poor part fit, inadequate tools or jigs, unclear specifications, etc. | Construction robots offer improved working conditions by removing workers from dangerous environments. |
Clearly define the best way to perform each job action and the proper sequence. Poor ergonomic design negatively affects productivity and quality as well as safety. |
Lean Objective: Elimination of Mura (Unevenness) [27,29,30] | HRC Objective: Enhancement of Efficiency [72] |
---|---|
Use stable, repeatable methods but try to build as much flexibility into the system as possible. | Efficiency results from simultaneously obtaining the shortest production time, high quality of products, accuracy, and optimal flexibility in the industrial process |
Flexibility is needed for operators to easily adjust work cycles in response to demand changes. | |
Standard work aims to create processes and procedures that are repeatable, reliable, and capable. | |
Standardized work is key to building with quality and without defects and establishes the foundation for continuous improvement. | |
The more that the production is leveled, the shorter the lead time and the less strain experienced by operators. |
Lean Objective: Elimination of Muda [30] | HRC Objective: Enhancement of Efficiency [14,72] | |
---|---|---|
Unnecessary motion | Any non-value-adding motions such as looking for, reaching for, or stacking parts, tools, etc., and walking, are forms of waste. | Efficiency refers to the improvement of the entire industrial process or simplification of the operator’s actions to complete a task by scheduling activities or via optimal planning of worker and robot actions Cobots are increasingly adopted to augment productivity by shortening a task time. Construction robots offer enhanced productivity compared to conventional labor. |
Waiting | Waiting for a machine or the next processing step, tool, supply, part, etc., or lack of work because of stockouts, delays, equipment downtime etc., are forms of waste. | |
Overprocessing | Overprocessing, i.e., undertaking unnecessary activities during a work process, is waste. |
Lean Objective: Elimination of Defects [27,30] | HRC Objective: Enhancement of Efficiency [16,72,86] |
---|---|
Production of defective parts mean wasteful handling, time, and effort. | Construction robots offer improved quality via precise control of functions and operations and by allowing real-time monitoring (and recording) of the operation. Cobots offer higher speed, quality, and pinpoint accuracy. HRC may additionally involve defects due to program or communication errors between the human and the robot. |
5S is a series of activities for eliminating wastes that contribute to errors, defects, and injuries. | |
Standardized work is key to building with quality and without defects and establishes the foundation for continuous improvement. | |
When a poka-yoke detects an error, it should either shut down the machine or deliver a warning | |
Poka-yokes reduce a worker’s physical and mental burden by eliminating the need to constantly check for the common errors that lead to defects. |
Lean Objective: Elimination of Underused Employee Skills [30] | HRC Objective: Enhancement of Efficiency [9,72] |
---|---|
Losing time, ideas, skills, improvements, and learning opportunities by not engaging or listening to employees are forms of waste. Maintain and improve the skills that enable the production of added value The true value of continuous improvement is in creating an atmosphere of continuous learning. Train exceptional individuals and teams to work within the corporate philosophy to achieve exceptional results | Cobots are designed to focus on repetitive activities so that the operator can focus on problem-solving tasks. Using imitation learning methods, skilled human workers continually train construction robots and work with them to supervise their performance during the task execution. |
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Marinelli, M. Human–Robot Collaboration and Lean Waste Elimination: Conceptual Analogies and Practical Synergies in Industrialized Construction. Buildings 2022, 12, 2057. https://doi.org/10.3390/buildings12122057
Marinelli M. Human–Robot Collaboration and Lean Waste Elimination: Conceptual Analogies and Practical Synergies in Industrialized Construction. Buildings. 2022; 12(12):2057. https://doi.org/10.3390/buildings12122057
Chicago/Turabian StyleMarinelli, Marina. 2022. "Human–Robot Collaboration and Lean Waste Elimination: Conceptual Analogies and Practical Synergies in Industrialized Construction" Buildings 12, no. 12: 2057. https://doi.org/10.3390/buildings12122057