OEE Calculator Skill | Agent Skills

OEE Calculator

Overview

The OEE Calculator skill provides comprehensive capabilities for calculating and analyzing Overall Equipment Effectiveness. It supports availability, performance, and quality tracking, six big loss categorization, and world-class benchmarking.

Capabilities

Availability calculation
Performance rate tracking
Quality rate measurement
OEE trending and dashboards
Six big loss categorization
Pareto of losses
Improvement target setting
World-class benchmarking

Used By Processes

LEAN-001: Value Stream Mapping
SIX-002: Statistical Process Control Implementation
CI-003: Benchmarking Program

Tools and Libraries

MES integration
OEE software
Real-time dashboards
Data collection systems

Usage

skill: oee-calculator
inputs:
  equipment: "CNC Machine 5"
  period: "2026-01-15"
  shift_data:
    planned_production_time: 480  # minutes
    downtime:
      - type: "breakdown"
        minutes: 30
      - type: "changeover"
        minutes: 20
    ideal_cycle_time: 0.5  # minutes per unit
    total_count: 800  # units
    good_count: 780  # units
outputs:
  - oee_score
  - availability
  - performance
  - quality
  - loss_breakdown
  - improvement_opportunities
  - trend_analysis

OEE Calculation

Formula

OEE = Availability x Performance x Quality

Where:
Availability = Run Time / Planned Production Time
Performance = (Total Count x Ideal Cycle Time) / Run Time
Quality = Good Count / Total Count

Example Calculation

Planned Production Time: 480 minutes
Downtime: 50 minutes
Run Time: 430 minutes
Ideal Cycle Time: 0.5 minutes
Total Count: 800 units
Good Count: 780 units

Availability = 430 / 480 = 89.6%
Performance = (800 x 0.5) / 430 = 93.0%
Quality = 780 / 800 = 97.5%

OEE = 89.6% x 93.0% x 97.5% = 81.3%

Six Big Losses

| Loss Category | OEE Factor | Examples | |---------------|------------|----------| | Breakdowns | Availability | Equipment failures | | Setup/Adjustments | Availability | Changeovers, warm-up | | Small Stops | Performance | Jams, minor issues | | Reduced Speed | Performance | Running below ideal rate | | Startup Rejects | Quality | Scrap during start-up | | Production Rejects | Quality | In-process defects |

OEE Benchmarks

| OEE Level | Classification | Typical Range | |-----------|----------------|---------------| | World Class | Best in class | 85%+ | | Good | Above average | 70-85% | | Average | Typical | 60-70% | | Low | Needs improvement | 40-60% | | Poor | Significant issues | <40% |

World-Class Targets

| Factor | World Class | Typical | |--------|-------------|---------| | Availability | >90% | 85% | | Performance | >95% | 90% | | Quality | >99.9% | 98% | | OEE | >85% | 60% |

Loss Analysis Process

Collect accurate loss data
Categorize by six big losses
Create Pareto chart
Focus on top losses
Apply appropriate methodology
Track improvement

Integration Points

Manufacturing Execution Systems
PLC/SCADA systems
Quality Management Systems
Maintenance management (CMMS)

Agent Skills: OEE Calculator

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