Question

Maruti wants to develop a precedence diagram for an assembly contain 6 activities. The available productive time is 550 minutes/day and the output desired is 80 units/day. Calculate cycle time, number of workstation required and efficiency of the line. Also, group the activities into workstations.

Answer 1

To find the cycle time, workstations needed, and line efficiency, apply formulas with the productive time and output required. Group activities based on a precedence diagram to optimize workstation flow and maintain efficiency.

Step-by-step explanation:

To calculate the cycle time for the assembly line, you can use the formula: cycle time = total productive time available per day / output required per day. In Maruti's case, this would be cycle time = 550 minutes/day / 80 units/day, which simplifies to 6.875 minutes per unit. The number of workstations needed can be estimated by dividing the sum of the task times by the cycle time. Lastly, efficiency of the line can be determined by dividing the sum of the task times by the product of the number of workstations and the cycle time, then multiplying by 100 to get a percentage.

To group activities into workstations, you would create a precedence diagram and then apply line balancing techniques to ensure that each workstation's total time is as close to the cycle time as possible without exceeding it. This organization aims to optimize the flow of work and ensure maximum efficiency on the assembly line.