History of MTM-1
History of MTM-1
H. B. Maynard, J. L. Schwab, and G. J. Stegemerten
worked on the development of the data supporting the MTM basic method. This data was evaluated, revised and fully tested in industry in the following years. The results were published in the journal “Factory Management and Maintenance” in 1948. The book “Methods-Time Measurement”, which summarizes the basics of the MTM methodology, appeared that same year.
At that time, no distinction had yet been made between the terms “MTM method” and “MTM-1”, as this was the first system developed for use in modeling work systems.
The developers of MTM had already formulated the following requirements for the MTM method:
- the method must be applicable in every industry
- the method must be generally comprehensible and easily learned without any particular previous knowledge
- the method must be designed in such a way that the execution time for a given method is “automatically produced”
- the method must be managed in an identical fashion around the world
All data used in the development of MTM-1 are stored at the University of Michigan in Ann Arbor, Michigan (USA) and at the Maynard Research Council in Columbus, Ohio (USA) and can be seen there. They form the basis for research conducted in the 1950s and 60s by the U.S. MTM Association for Standards and Research. Both “Methods-Time Measurement” published in 1948 by Maynard, Schwab and Stegemerten and the subsequent published research reports serve as the “genetic material” for MTM-1.
In order to distinguish the Basic Motions from each other and calculate their time requirements, a large number of industrial work processes were filmed. The actual times were calculated by counting the number of frames per motion (film speed of 16 frames/second). The method of obtaining data is described in full in the text by Maynard, Schwab and Stegemerten. For other motions, e.g. for Walk, the actual times were calculated with the help of time studies.
Performance at 100% is described in the book Methods-Time Measurement as being
“the equivalent of the much-discussed fair day’s work. It was to represent an effort level that could be easily maintained year in and year out by the physically normal operator without in any way requiring him to draw upon his reserves of energy.”
The LMS System of leveling considers the following four features in assessing performance:
MTM Standard Performance for each category of time was established by a group of experienced practitioners using the LMS system as follows:
The MTM times were then further processed using statistical methods, with particular emphasis on the factors that influenced the variance inherent in the data.
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Minimizing stress situations
“We’re also carrying out process analyses in the nursing area. This has the crucial benefit that it is easier to plan human resources needs, minimize stress situations and, at the same time, guarantee excellent nursing care or even improve it.”
Dr. Stefan Beyer, Managing Director, Vital-Kliniken GmbH
Ergonomics and economics
“MTM makes a significant contribution towards reconciling an increase in productivity and ergonomics. Because the basis for any increase in productivity is firstly the technical preparation work, the industrial equipment, but also the work design for the employees. When there’s an increase in productivity, there’s greater physical pressure for the employee – and the MTMergonomics analysis allows us to classify the level of this pressure.”
Harald Ebner, Head of Disk Brakes Unit, Knorr-Bremse Systeme für Nutzfahrzeuge GmbH, Aldersbach
"The introduction of the ERGO-UAS system has dramatically changed the way of developing the new products and of managing Production and the Industrial Relations. No motion can be designed, implemented and executed in our company without the scientific assessment of the biomechanical load generated by the motion itself. The paradigm "more productivity less health" has been turned into the new "more productivity more health" and the ERGO-UAS system has become one of the fundamental pillar of our production system"
Luigi Gennaro Galante, VP Manufacturing EMEA, Fiat Group Automobiles SpA