Takt time isn’t “improved.” Cycle time is improved. Takt time is the amount of time “allowed” to complete a work sequence. Cycle time is what is “required” to complete a work sequence. Redistributing work content among operators so as to have similar cycle times for each allows wait time to remain. Redistributing work content so that each operator’s cycle time is coincident with takt time reduces wait time to the remaining fractional difference to a whole number of operators. Improvement should then focus on modifying work content so as to reduce the fractional portion to zero, thereby achieving labor cost reduction.
Reference Training Within Industry, Job Methods and kaizen, TPS, standard work.
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