Sponsored Content
How One Electronics Manufacturer Reduced Scrap & Increased Reliability with Press-Fit Assembly
Optimizing Circuit Board Assembly with Compliant Pin Technology
In the world of electronics manufacturing, the smallest inefficiencies can lead to major production losses, especially when dealing with high-value circuit boards and densely packed connectors. One leading electronics manufacturer learned this firsthand. Their traditional assembly process relied on hand-soldering connectors because the components couldn't pass through SMT (surface-mount) reflow systems. While common, this approach created costly challenges: high scrap rates, labor bottlenecks, and the constant risk of misalignment.
With some connectors containing 100+ pins, even the slightest error meant an entire board could be rendered unusable. The manufacturer needed a smarter, more scalable approach.
The Challenge: Precision Assembly with Zero Room for Error
To eliminate the inefficiency of manual soldering, the engineering team turned to compliant pin technology—a press-fit method where specialized, radially flexible pins are inserted into the PCB without solder.
This shift promised:
- Reduced energy consumption
- A faster, repeatable assembly process
- Higher mechanical and electrical reliability
But press-fit assembly introduced its own challenges, including:
- Bent or misaligned pins
- Obstructed or imperfect PCB holes
- Incorrect connector variants being installed
- Machine misalignment damaging components
To make press-fit assembly viable, they needed a system capable of detecting problems early and before the press cycle caused board damage.
The Solution: Intelligent Press-Fit Assembly with Promess EMAP
The manufacturer integrated a Promess Electro-Mechanical Assembly Press (EMAP), leveraging its advanced in-process monitoring, high-precision sensing, and closed-loop control.
Key Technologies That Drove Success
1. High-Precision Force Measurement
Promess’ integrated load cell delivered accurate force detection, even at low force ranges, allowing operators to identify bent pins or misalignments at initial contact.
2. Closed-Loop Positioning Control
If the press detected an anomaly, the cycle automatically stopped before any damage occurred. This eliminated unnecessary scrap and reduced operator intervention.
3. Data-Driven Quality Assurance
Force and position signatures were recorded for every assembly, ensuring full traceability and compliance. This is critical for electronics manufacturers with strict quality requirements.
Together, these capabilities transformed press-fit assembly from a risky alternative to a controlled, highly repeatable operation.
Results: Reduced Scrap, Improved Reliability, and Lower Costs
The impact of the Promess EMAP integration was immediate and measurable:
✔ Major Scrap Reduction
Early detection of misalignments prevented connector and PCB damage, vastly reducing waste and rework.
✔ Increased Energy Efficiency
Unlike soldering irons that constantly draw power, EMAPs consume energy only during active pressing.
✔ Greater Process Flexibility
The programmable system accommodated multiple connector types and board configurations with simple fixture changes—perfect for lean, high-mix environments.
✔ Higher Product Reliability
Automated precision ensured consistent press-fit depth and force, reducing field failures and improving long-term performance.
✔ Better Durability in Harsh Conditions
The more robust press-fit joints allowed assemblies to withstand demanding environmental conditions, extending overall product lifespan.
A Smarter, More Sustainable Future for Electronics Assembly
By adopting compliant pin technology powered by the Promess EMAP, the manufacturer modernized its entire connector-assembly workflow. What began as a way to reduce soldering inefficiencies evolved into a fully optimized, data-driven, and sustainable process.
This transformation showcases how intelligent automation and real-time sensing can solve long-standing manufacturing challenges like helping electronics producers improve quality, reduce waste, and stay ahead in an increasingly competitive industry.
Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!
