Description
Subtract usedMinutes from lifeMinutes for remainingMinutes.
Production capacity terms compare available time, demand, cycle time, and buffer use. A scalar average or count budget can hide task constraints and process variability.
Subtract usedMinutes from lifeMinutes for remainingMinutes.
When to use this tool
Use Tool Life Cutting Time Budget Term when you need a transparent capacity, takt, or workload component.
How to use the tool and how it works
- Enter lifeMinutes, usedMinutes, cutMinutesPerPart, plannedParts. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read remainingMinutes, wholeParts, plannedSlackMinutes. Use the output convention below.
Subtract usedMinutes from lifeMinutes for remainingMinutes. Floor remaining/cutMinutesPerPart for wholeParts and subtract plannedParts × cut time for plannedSlackMinutes.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| lifeMinutes | Life Minutes | Required. Finite number; minimum 0. |
| usedMinutes | Used Minutes | Required. Finite number; minimum 0. |
| cutMinutesPerPart | Cut Minutes Per Part | Required. Finite number; strictly above 0. |
| plannedParts | Planned Parts | Required. Safe integer; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| remainingMinutes | Remaining Minutes | Required. Finite number. |
| wholeParts | Whole Parts | Required. Safe integer. |
| plannedSlackMinutes | Planned Slack Minutes | Required. Finite number. |
{
"input": {
"lifeMinutes": 100,
"usedMinutes": 30,
"cutMinutesPerPart": 4,
"plannedParts": 20
},
"output": {
"remainingMinutes": 70,
"wholeParts": 17,
"plannedSlackMinutes": -10
}
}Limitations and assumptions
- Tool life and per-part cutting time are supplied, not predicted; slack can be negative and cutting safety or product quality is not assessed.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Validate the complete process, resources, and variability before converting a local budget into a production plan.
References
Similar or alternative tools
- Takt Cycle Slack Per Unit
Divide nonnegative availableMinutes by positive demand for taktMinutes.
- Split Lot Transfer Delay One Batch Term
Multiply min(lotUnits, transferUnits) by processingMinutesPerUnit for firstTransferReadyMinutes.