Therblig is a motion-economy study developed by Frank and Lillian Gilbreth, two pioneering industrial engineers of the early 20th century. The term is derived from the combination of the couple’s last name and the word “element,” and it refers to the smallest amount of motion required to complete a certain task. The Gilbreths developed Therblig in order to explain and analyze the various motions and movements necessary to complete certain tasks, and to identify repeatable patterns. This allowed them to break down complex tasks into smaller and more efficient parts.
The Gilbreths found that nearly all motions could be divided into 18 distinct and standard components. These components, known as Therbligs, are: (1) transport empty, (2) grasp, (3) transport loaded, (4) hold, (5) position, (6) release, (7) inspect, (8) select, (9) use, (10) assemble, (11) disassemble, (12) maintain, (13) store, (14) prepare, (15) rest, (16) plan, (17) position parts, and (18) count.
The purpose of the Therblig system is to reduce motion and optimize efficiency. By breaking down the task into its smallest components and analyzing the amount of motion used for each, the Gilbreths were able to identify areas where motion could be reduced and improved. This method also helps to eliminate unnecessary motion, which can lead to increased productivity and improved safety.
Therblig is still used today in many industries, including manufacturing, healthcare, and hospitality. By understanding and applying the principles of the Therblig system, engineers and other professionals can identify ways to streamline and improve processes.
References
Kilger, D. (2010). Therblig – The Gilbreth Method of Motion Economy. Retrieved from https://www.mindtools.com/pages/article/therblig.htm
Tutor2u. (2016). The Gilbreth Method of Motion Economy – Therblig. Retrieved from https://www.tutor2u.net/business/reference/the-gilbreth-method-of-motion-economy-therblig
Worrell, J. (n.d.). Therblig: the Gilbreth Method of Motion Economy. Retrieved from https://www.verywellmind.com/what-is-therblig-4798778