Must read all articles posted under Industrial Engineering label. If you love Industrial Engineering (IE) topics and you want to learn this subject, I encourage you to read the following IE articles.
How to Calculate Daily Target using SAM
An industrial engineer wrote me the following email with questions and asked for the clarifications. In this article, I will share my comments. We will try to understand the difference in calculating the daily production target of a sewing line using the standard time (SAM) and average operation cycle time.
I have read and understood well to your explanation about how to calculate SAM of a garment. Formula: Standard Time = Basic Time + various Allowance (around 20%) where Basic time = Observe Time x Performance Rating. Using the above formula, we get the Standard Time. So, we can set daily production target based on Standard Time. My example: 52 workers, 10 hours/day, SAM =34.25 Line Target per day = (52x10x60)/34.25 = 911pcs My understanding, 911pcs/day is at 100% target of the standard time that we need to calculate it into 80% which to cover around 20% downtime in the production floor. So, ((52x10x60)/34.25)x80% = 729 pieces/day Question#1. Do you agree with this calculation? But my boss's understanding is that I have added around 20% allowance to normal time (BT) and again 20% to Standard Time when setting the daily target that is too much allowance to operators. So, he discussed with me to calculate by this following method: Standard time = Average Cycle Time +20% (for all kinds of operation) Example : Total Average Cycle Time = 2.72 minutes (all operations) Standard Time = 2.72 / 0.80 (it means he added 20% to the cycle time) = 3.40 minutes Qestion#2. He said that 3.40 minute already added 20% allowance to the operators with unavoidable downtime in the work floor. So as above all description, I need your help to explain the difference between these two methods and introduce some article which you may already be written. I am waiting to read your reply explanation in the nearest future.
Thanks for following technology garmenttechnologygtm.com tutorials and writing an email to me with questions and asking for clarification.