Operation bulletin may be a vital tool of commercial engineering which is employed to machine layout planning, line balancing, remove the bottleneck and therefore the total number of worker and helper needed for garment production. it's a document where you'll get all sort of information about the assembly procedure.
Making an Operation Bulletin (OB) isn't an enormous deal. If you understand sewing machines and garment operations and may work on Microsoft Excel (spreadsheet) you'll make an operation bulletin.
If you're starting your career in industrial management , you want to know these secrets of creating operation bulletin and estimating SAM for each garment operation.
Remember, you're not getting to make the right OB within the initial attempts. you've got to practice tons to become master in making the Operation Bulletin.
Also remember, the foremost difficult a part of making OB is estimating operation SAM (Standard minute). If your factory has SAM calculation software (like GSD, SewEasy or ProSMV), find out how to use the software. If you do not have any software, don't be concerned . As during a recent survey, we found that only 26% of companies use PMTS based software for calculating garment SAM. Rest 74% of companies do not have such system but they create operation bulletin with estimated SAM and meet the aim of creating OB.
There is an answer for this problem too - use time and motion study method for determining Garment SAM.
The secret formula is explained within the following. Practice using following guidelines to become an expert in making OB.
1.Collect some operation bulletin sheets from the IE department. If you've got no access to IE department in your factory you'll refer a few of operation bulletins published on this site.
2.Read the prevailing OB thoroughly and check out to relate operation and operation SAM at 100% rating. Read OB for variety of products and canopy multiple styles for an equivalent product.
3.Create one OB template within the spreadsheet following sample OB. Add formula in machine and manpower column. If you do not have OB format, download my sample OB sheet.
4.Take one garment (sample) and Make Operation breakdown.
5.Match operations of the sample garment with example OB and use that SAM in your OB. Fill SAM for operations as many as possible. just in case you do not find data within the sample OBs, keep it blank for nonce .
6.Wait for loading the design to the road . Do time and motion study for all operations and do cycle timing a minimum of 15-20 serial operation cycles. to urge accurate result first study sewing operator - if the operator is doing operation during a rhythm. Neither at slow pace nor at fast pace? If possible select operators who are performing operations at normal pace. After doing time and motion study for few weeks, you'll be ready to find operators working with a traditional pace. If you're new time and motion study , seek help from your seniors for learning.
7.From the cycle time, calculate standard minutes for stitching operations. Fill the blank in your OB with SAMs determined from time and motion study .
8.Compare pre-filled SAM of all operations with the typical cycle time. Does it nearby or there's an enormous variation. If you found an enormous variation, study another sewing operator. If you continue to find there's an enormous gap between assumed SAM and time and motion study based SAM, replace the SAM within the OB with time and motion study value.
9.Other sections (columns) of the OB sheet are often calculated automatically by setting formula within the excel cells.
10.When you complete making a dozen of OB by the above method, you'll be comfortable with making an OB for similar operations. If you get new products and new operations, follow the above method again. Afterword you'll be making OB and estimate operation SAM supported experience.