Line Balancing Flashcards
How can Cycle time be defined?
The frequency at which parts are transferred between stations.
How can Cycle Time be calculated?
Available time / Demand in units
What is Lead Time?
The time a unit is in the progress / The time it takes from starting to work on a unit, until it is finished.
How is Lead Time Calculated?
Cycle Time * Num. of Workstations
What is equal to the minimal cycle time possible?
The longest task time of all of the different tasks.
How can you calculate the theoretical minimum number of workstations?
= Total task time / Cycle Time
= Total Task Time * (Demand/Available Time)
What is an alternative way to calculate idle time of a process line?
Lead Time - Total Task Time
Efficiency = …
Total Task Time / Lead Time
A line’s capacity is a function of…
the cycle time
What is the positional Weight of a task?
Sum of task time and all following task times
How do you calculate the percentage of idle time?
100[total Idle time per cycle / (num. of stationscycle time)]
What are three ways to make a process line more efficient?
- Parallel Workstations - using two workstations for one task
- Cross-training workers
- Mixed Model Line - Different Products using the same line.
When there is idle time, this creates…
Work in Process Inventory
