📋 Case Study

Automated Assembly Line Robot Cell Risk Assessment

New collaborative robot (cobot) integration without physical guarding

🏗️ Project Overview

Tier-1 automotive supplier, Ohio plant upgrade

🎯 Challenge

New collaborative robot (cobot) integration without physical guarding

🔧 Design Approach

ISO/TS 15066-compliant speed-and-separation monitoring with validated safety distance calculations

📐 Design Diagram

Collaborative Robot Cell COBOT Operator S = 725 mm (ISO/TS 15066) Speed & Separation Monitoring PL = PLd (ISO 13849-1) No Physical Guarding Automated Assembly Line Robot Cell Risk Assessment

AI-generated project design illustration

📐 Key Calculations

Minimum Safety Distance (S)

S = (K × T) + C
Result: 725 mm
Ensures operator stops before contact

Performance Level (PL) Verification

PL = PLr per ISO 13849-1
Result: PLd
Validates reliability of safety circuit

📊 Results

Zero incidents over 18 months; achieved PLd compliance; reduced cycle time by 12%

💡 Lessons Learned

  • Safety validation must precede production commissioning
  • Human-robot interaction zones require dynamic re-evaluation

Key Takeaways

  • 1Safety validation must precede production commissioning
  • 2Human-robot interaction zones require dynamic re-evaluation