Given the following manufacturing precedence relationships, compute the cycle ti

Question

Given the following manufacturing precedence relationships, compute the cycle time per day and the minimum number of workstations assuming eight working hours a day and 400 products need to be produced per day.

TASK DESCRIPTION       TASK TIME        PRECEDING TASK

A            Punching              30 seconds

B            Bending               20 seconds          A

C            Combining           30 seconds          B

D            Painting               40 seconds          C

E             Polishing              60 seconds          D

                                             --------------

                                             180 seconds

Explanation / Answer

Cycle time per day=Total Production time available/Desired unit of output

Cycle time per day=8*60*60sec/400=72sec

Minimum number of workstation required=Total Task time/Cycle time

Minimum number of workstation required=180/72=2.5

Since we can’t have half workstation, Minimum workstation required=3

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