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Once a strategic value stream has been selected, a team is formed and charted to map the current state. This team should consist of person from the area being mapped, along with any support personnel (such as manufacturing engineering, design engineering, facilities, customers, or lean coordinators) that may be desired.

The objective of the current state map is to walk the process from customer to supplier in order to identify all process steps, process step metrics (cycle time, process time, and change over time, number of people required, number of shifts, reliability, inventory, and information flow. This sets the stage for creating the future state map- in the next step.

Frequently, the current state value stream map will reveal the inefficiencies of the existing production process. These inefficiencies are sometimes a result of unreliable machines, long setup times, and the use of batch and queue production processes, typically leading to large amounts of inventory between each process step and long production lead times (Seth and Gupta 2005).

The “lead time ladder” at the bottom of the value stream map attempts to quantify the amount of processing time required at each step (on the lower steps of the ladder) and the amount of lead time ahead of each process step based on the inventory ahead of each process step (the upper steps of the ladder). By summing across the lower steps and upper steps, the team can get an indication of the ratio of total production lead time. Often, this ratio is very low, indicating a high amount of non-value added activity in the system

The problems in the current cell are mapped in a value stream with the help of IGrafx flow charter software. It is a very user friendly software available for analyzing a process and for modeling the system. It helps the organization to understand the current scenario in a very visual way. From the value stream map the bottleneck situation is analyzed and the overall lead time is reduced for the product.

4.13.1 Background

The current value stream map was already designed by the management as some initial lean techniques were implemented in the cell prior to this work. The problems in the current cell are mapped in a value stream with the help of IGrafx flow charter software. It is an user friendly software available for analyzing a process and for modeling the system. It helps the organization to understand the current scenario in a visual way.

The changes and improvements made in this work helped to achieve the targets in the future state map by reducing the lead time. The new techniques used in this work were updated in the current state value stream to make the journey of lean continue to achieve the ideal situation. With the help of the current value stream map the need for throughput increase, quality and delivery time is un本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。