The Assembly Bottleneck
On manual assembly lines, operator fatigue and part misalignment account for over 70% of manufacturing defects. A fast-growing smart metering manufacturer was facing high solder defect rates when assembling PCB display modules into front bezel panels.
Operators were manually holding components in place with tweezers while fastening screws, leading to repetitive strain injury (RSI) complaints and inconsistent clamping force.
Rapid In-House Fixture Design
FamilyMake visited the assembly line, captured 3D scan data of operator workstations, and engineered custom modular assembly fixtures within 48 hours:
- Poka-Yoke Keying: The printed fixtures featured asymmetrical locating pins that made inserting the PCB backward physically impossible.
- Integrated Quick-Clamp Toggles: Embedded mounting pockets for standard toggle clamps, holding panels firmly with zero operator grip force.
- Soft TPU Overmolds: Contact surfaces were printed in 90A TPU to prevent scratching cosmetic display lenses.
Production Impact
Eighteen fixtures were printed in durable PETG over a holiday weekend and placed on stations on Monday morning. Within two weeks, assembly cycle time per unit dropped from 94 seconds to 38 seconds, and scrap defect rates plunged by 65%.
