A Yamazumi chart is a stacked bar
chart that shows the balance of cycle time workloads between a number
of operators typically in an assembly line or work cell.
The Yamazumi chart can be either for a single product or multi
product assembly line.
Yamazumi is a Japanese word that literally means to stack up.
Toyota uses Yamazumi work balance charts to visually present the
work content of a series of tasks and facilitate work balancing and
the isolation and elimination of non value added work content.
The balance charts are created in Timer Pro Professional (shown here
on the right). If you are using Video Timer Pro to measure the work
content the videos are automatically embedded in each activity chip
for instant replay to identify improvement opportunities and for
operator training.
A single click in Timer Pro will send the entire Yamazumi balance
chart to Excel (shown below). The work elements are automatically
sized in proportion to the work content. In addition the video
snippets are embedded in the Excel sheet. Timer Pro includes a free
player that will allow these videos to be replayed directly on the
factory floor i.e the end users do not require Timer Pro to review
the video content. From Excel the charts can be printed in any size
- many companies print out the charts over 3 feet tall for worker -
and management - review.
On the Excel Yamazumi chart each row represents one unit of time -
either seconds, minutes or hours.
Timer
Pro Professional’s work balance module allows you to develop and
manage Yamazumi charts for any process. The Yamazumi charts can be
output in any size – ideal for
workplace presentations.
For use on the production
floor, you may provide supervisors and operators access to copies of your
Yamazumi charts.
They may then identify additional improvement opportunities
by with the user friendly drag and
drop features.
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