Introduction to MTM-1: The Gold Standard in Predetermined Times and Methods Engineering
In the age of Industry 4.0, using a stopwatch to measure human work is increasingly seen as an archaic practice. MTM (Methods-Time Measurement) offers a scientific alternative: analyzing the methods to determine the time, rather than timing the method.
1. What is MTM-1?
MTM-1 is a system of predetermined times that analyzes any manual operation or method into the basic motions required to perform it. It assigns a predetermined time standard to each motion, determined by the nature of the motion and the conditions under which it is made.
The Basic Motions
MTM-1 breaks down actions into elements like:
- Reach (R)
- Grasp (G)
- Move (M)
- Position (P)
- Release (RL)
2. The Unit of Measurement: TMU
Unlike the stopwatch which uses seconds, MTM uses the TMU (Time Measurement Unit). This allows for extreme precision in high-frequency, short-cycle assembly tasks.
Conversions:
- 1 TMU = 0.00001 hours
- 1 TMU = 0.0006 minutes
- 1 TMU = 0.036 seconds
- 1 Second = 27.8 TMU
3. Why Abandon the Stopwatch?
Subjectivity vs. Objectivity
The stopwatch requires “rating” the operator’s pace (See Normal vs Standard Time). MTM eliminates this subjectivity because the times are established at a 100% performance standard (Centesimal or Lowery scale).
Predictive Power
You can calculate the cost of a product before production begins. With a stopwatch, you need a physical line running; with MTM, you only need the design.
4. Digitalization: From Paper to Digital Twin
While MTM-1 analysis can be done manually, modern software like CronometrasApp allows you to build these analyses digitally. This data feeds into your Digital Twin, allowing you to simulate line balancing and capacity planning without stopping production.
Conclusion
MTM-1 is not just a measurement tool; it is a design tool. It forces engineers to think about the method first, ensuring that the process is efficient by design.
Audit your methods with MTM-1. Contact us to learn how to implement predetermined times in your factory.
