How a Small Manufacturer Solved Quality Issues with a $35K Cobot
CNC machining shop, 45 employees, $8M revenue
92%
Defect reduction
91%
CNC utilization
$380K
Annual savings
7 months
Payback
What they were up against
A precision parts manufacturer was losing contracts due to inconsistent quality from manual machine tending — operators loaded CNC machines differently, causing 3.8% defect rates.
- 3.8% defect rate on CNC-machined parts, costing $240K/year in scrap and rework
- Lost 2 major aerospace contracts citing quality inconsistency
- Night shift had 2x the defect rate of day shift due to fatigue
- Could not justify traditional industrial robot ($150K+) for their volume
What they deployed
Deployed a Universal Robots UR10e cobot for CNC machine loading/unloading, ensuring identical part placement every cycle.
Universal Robots UR10e collaborative robot ($35K)
- UR10e handles loading blanks and unloading finished parts from 2 CNC machines
- Programmed via teach pendant in 3 days by existing shop floor lead
- Runs unmanned on night shift, doubling effective CNC utilization
- Quality verification station added: cobot presents each part to a vision system
How they did it (6 weeks from purchase to production)
Installation
1 weekMount cobot, install gripper, wire safety I/O to CNC machines
Programming
1 weekShop floor lead programmed 4 part recipes via teach pendant
Testing
2 weeksRun alongside operators, validate cycle times and quality
Full production
2 weeksTransition to unmanned night shift operation
What they achieved
92%
Defect reduction
From 3.8% to 0.3% defect rate
91%
CNC utilization
Up from 52% with manual tending (night shift added)
$380K
Annual savings
Scrap reduction + night shift output + quality recovery
7 months
Payback
On $35K investment including gripper and vision system
7 months
“We were skeptical a $35K robot could solve a quality problem that training couldn't. The data changed our minds in the first month.”
Key takeaways
Don't overthink it — for machine tending, a cobot is not a complex integration; it's a $35K tool
The real ROI wasn't in labor savings; it was in quality improvement and recovered contracts
Having the shop floor lead program the cobot (not an external integrator) meant faster adaptation to new parts
Unmanned night shift was the unexpected win — we effectively doubled our CNC capacity
Started exploring cobots for welding and deburring after seeing machine tending results
Ready to get results like these?
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