Balance tasks, precedence rules, and station loads across production. Compare cycle scenarios and staffing easily. Turn complex assembly data into practical workstation decisions today.
This sample demonstrates a small assembly line with precedence dependencies. You can paste these values into the task input area and test different cycle targets.
| Task | Task Time (min) | Predecessors | Notes |
|---|---|---|---|
| A | 0.60 | None | Base component placement |
| B | 0.50 | A | Fastener installation |
| C | 0.40 | A | Wire routing |
| D | 0.70 | B | Inspection and torque step |
| E | 0.30 | B, C | Label and sensor fit |
| F | 0.80 | D, E | Final assembly closure |
| G | 0.45 | C | Accessory mounting |
| H | 0.55 | F, G | Pack-out preparation |
Task assignment uses a ranked positional weight approach. Each task weight equals its own time plus all successor task times, which helps prioritize work with the greatest downstream impact.
It measures how evenly work content is distributed across stations while meeting a required production pace. A balanced line reduces idle time, congestion, and bottlenecks without violating precedence relationships.
Use manual cycle time when a takt target, machine pace, or customer contract already sets the required unit rate. It is also useful for testing what-if staffing and throughput scenarios.
The theoretical minimum ignores precedence restrictions and task-fit issues. In practice, tasks may not combine neatly within the cycle time, so more stations are often needed to respect sequencing.
Many operations aim for high efficiency, but the acceptable value depends on product variety, ergonomics, inspection steps, and changeover needs. Compare efficiency with quality, safety, and staffing realities.
It shows how uneven the station workloads are compared with the most heavily loaded station. Lower values suggest a more even distribution and usually a steadier production rhythm.
Yes. Each task can reference one or more predecessors. The calculator validates the task network, blocks circular logic, and assigns stations only when predecessor conditions are satisfied.
That happens when the chosen cycle time is smaller than the task duration. The warning tells you that the takt target is unrealistic unless you split the task, improve the method, or raise cycle time.
Try splitting long tasks, changing method layouts, shifting support work offline, adjusting staffing, or revising cycle time. Re-run the model after each change and compare idle time and efficiency.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.