Takt time & Cycle time

TAKT TIME VS CYCLE TIME DEFINATIONS & CALCULATION WITH EXAMPLES

          Normally many of us get confused between Takt time & Cycle time. There is a big difference in    

          both the terms. Let us find out the Difference in their definition first.

                                                     TAKT TIME:

Takt time is the maximum amount of time in which product need to be produced to meet the customer demand. Or in other words Takt time is the speed in which product need to created or manufactured to satisfy the needs of customer.

          So TAKT TIME Formula 

                 = (Net Time Available for Production)/(Customer’s Daily Demand)

          Let's us consider the example from manufacturing industry.

         Example:

         Company A require 350 pcs to be manufacture in a day.

        Based on the requirement Company B will calculate the Takt time for the same.

        Let us say  available time for production is 7 hours 30 minutes (excluding rest time & lunch  

        time) that is 450 minutes, but from this also you need to minus the 5s time or start up time if any 

        during start of shift or end of shift. So let us say 5 minutes time is used for 5s or start up during 

        start of shift & 5 minutes of 5s at end of shift.

        So, Net available time = 450-10= 440 minutes

        Takt time  =  440⁄350  =  1.25 min/pcs

        Takt time assumes a constant daily demand during a day, if daily demand changes Takt time need 

        to be adjusted.

       So, basically above calculation of Takt time gave us the idea that we need to manufacture a part in 

        1.28 minute to meet the company A demand.

  

                                                    CYCLE TIME

        Cycle time: It is the actual time spent on working for manufacturing an product, measured from 

        start of first task to the end of last task. Cycle time includes both Value added time as well as non 

        Value added time.

        

       Let us understand this with the help of example:

       

       Company B produces 180 pcs in 7 hours 30 minutes ( one shift time net production time) ,we 

       assumed that there is no line stoppage

       

       Cycle time =   Total run time or net production time/ number of unit produced

                         =    450/180 = 2.5 minute/pcs

      So, now if we compare with our takt time calculated above, you will not be able to feed the  

     Company A , Assembly line as our cycle time is more than the Takt time.

     for this either need to run 2 shifts for meeting the company A demand or either you need to process 

    improvements  in company B assembly line so that Company A requirement can be met.

    By proper calculation of Cycle time & Takt time we can attain lot of benefits:

   1) Primary benefit of calculating Cycle time of your product is that you can determine if you are

       going to meet the customer requirement or not.

   2) Proper calculation of cycle time allow you to proper set up of the processes, it is important for

    understanding how many machines, stations or personnel are required for meeting the Takt time so

     that requirement can be met.

   3) Cycle time help you to identify if there are some improvements or LCA can be done to achieve 

       Takt  time.

   

Thank you for reading the article.

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