Automotive Relay Manufacturing: Meeting IATF 16949 Standards with Fully Automated Assembly Lines
Automotive relays require stable performance under thermal cycling and continuous vibration, with zero-defect production governed by IATF 16949. Closed-loop servo riveting stations deliver ±0.008mm positional repeatability and force-displacement curve monitoring to eliminate riveting cracks and loose joint risks. Yangning supplies a full range of automated relay assembly equipment. Our base assembly machine acts as the core platform for integrating custom riveting stations.
Automotive Harsh Environment Demands
Automotive-grade relays must sustain -40℃ ~ +125℃ thermal cycling and 10–2000Hz vibration without contact drift. Production stations must maintain \(C_{pk} \ge 1.67\) for all forming and riveting operations to satisfy automotive zero PPM requirements. Key failure modes to suppress: rivet over-compression, coil misalignment, core tilt.
The turnkey line uses cam indexing dial architecture, split into independent modular stations:
- Base assembly: PPU picks and positions plastic housing, ESD neutralization for molded components
- Iron core riveting: Closed-loop servo riveting unit with dynamic force-displacement envelope tracking
- Coil inserting: Poka-Yoke mechanical interlock prevents reversed coil loading
| Parameter | Servo Riveting | Pneumatic Pressing |
|---|---|---|
| Repeatability | ±0.008 mm | ±0.03 mm |
| Max Thrust | 12000 N | 8500 N |
| Stroke Velocity | 0.1–80 mm/s | Fixed speed |
| Maintenance Interval | 20,000,000 cycles | 3,000,000 cycles |
| Relative Capex | High | Low |
