Topic
Method study and time study in garment factories: motion study, SMV and how work measurement is used.
7 notes
A step-by-step method to calculate operation and garment SMV from time study: define the method, time the cycles, remove abnormal readings, rate performance, add allowances and check the result.
Lean means removing work that adds no value and making production flow. The eight wastes as they appear in cutting and sewing, the lean tools that work in garment factories, and a realistic order to start.
Motion study looks at the hand and body movements in an operation to remove waste. Practical principles for sewing workstations, how to analyse an operation from video, and examples of improvements that shorten handling time.
SAM and SMV usually mean the same thing: standard time in minutes. This note explains where the two terms come from, when companies use them differently, and how to avoid confusion when comparing numbers.
How to carry out a stopwatch time study on a sewing operation: break it into elements, take enough cycles, rate the operator's pace, add allowances and arrive at a standard time. With a worked example and the mistakes that spoil results.
SMV is the standard time to complete a task at a normal pace, including allowances. Learn what it includes, how it is set, how it drives targets, efficiency, capacity and CM cost, and where it goes wrong.
Work study combines method study (finding a better way to do a job) and work measurement (setting the time for it). An introduction for garment factories: the steps, the tools and how the results feed SMV, line balancing and costing.